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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-14 15:31:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-14 15:31:03 -0700
commitca2ec32658db160745990496f0f4580056a5dc9f (patch)
treed211f239219c85214da46dc1cbad4184a81d0248 /fs
parent6c8a53c9e6a151fffb07f8b4c34bd1e33dddd467 (diff)
parentfdc81f45e9f57858da6351836507fbcf1b7583ee (diff)
Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs update from Al Viro: "Part one: - struct filename-related cleanups - saner iov_iter_init() replacements (and switching the syscalls to use of those) - ntfs switch to ->write_iter() (Anton) - aio cleanups and splitting iocb into common and async parts (Christoph) - assorted fixes (me, bfields, Andrew Elble) There's a lot more, including the completion of switchover to ->{read,write}_iter(), d_inode/d_backing_inode annotations, f_flags race fixes, etc, but that goes after #for-davem merge. David has pulled it, and once it's in I'll send the next vfs pull request" * 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (35 commits) sg_start_req(): use import_iovec() sg_start_req(): make sure that there's not too many elements in iovec blk_rq_map_user(): use import_single_range() sg_io(): use import_iovec() process_vm_access: switch to {compat_,}import_iovec() switch keyctl_instantiate_key_common() to iov_iter switch {compat_,}do_readv_writev() to {compat_,}import_iovec() aio_setup_vectored_rw(): switch to {compat_,}import_iovec() vmsplice_to_user(): switch to import_iovec() kill aio_setup_single_vector() aio: simplify arguments of aio_setup_..._rw() aio: lift iov_iter_init() into aio_setup_..._rw() lift iov_iter into {compat_,}do_readv_writev() NFS: fix BUG() crash in notify_change() with patch to chown_common() dcache: return -ESTALE not -EBUSY on distributed fs race NTFS: Version 2.1.32 - Update file write from aio_write to write_iter. VFS: Add iov_iter_fault_in_multipages_readable() drop bogus check in file_open_root() switch security_inode_getattr() to struct path * constify tomoyo_realpath_from_path() ...
Diffstat (limited to 'fs')
-rw-r--r--fs/9p/vfs_addr.c2
-rw-r--r--fs/affs/file.c2
-rw-r--r--fs/afs/write.c1
-rw-r--r--fs/aio.c192
-rw-r--r--fs/bfs/inode.c1
-rw-r--r--fs/block_dev.c1
-rw-r--r--fs/btrfs/file.c2
-rw-r--r--fs/btrfs/inode.c2
-rw-r--r--fs/ceph/file.c3
-rw-r--r--fs/dcache.c2
-rw-r--r--fs/direct-io.c5
-rw-r--r--fs/ecryptfs/file.c7
-rw-r--r--fs/ext2/inode.c2
-rw-r--r--fs/ext3/inode.c2
-rw-r--r--fs/ext4/file.c2
-rw-r--r--fs/ext4/indirect.c2
-rw-r--r--fs/ext4/inode.c1
-rw-r--r--fs/ext4/page-io.c1
-rw-r--r--fs/f2fs/data.c2
-rw-r--r--fs/fat/inode.c1
-rw-r--r--fs/fuse/cuse.c2
-rw-r--r--fs/fuse/dev.c1
-rw-r--r--fs/fuse/file.c55
-rw-r--r--fs/fuse/fuse_i.h1
-rw-r--r--fs/gfs2/aops.c2
-rw-r--r--fs/gfs2/file.c1
-rw-r--r--fs/hfs/inode.c2
-rw-r--r--fs/hfsplus/inode.c2
-rw-r--r--fs/jfs/inode.c2
-rw-r--r--fs/namei.c168
-rw-r--r--fs/nfs/direct.c4
-rw-r--r--fs/nfs/file.c1
-rw-r--r--fs/nilfs2/inode.c2
-rw-r--r--fs/ntfs/Makefile2
-rw-r--r--fs/ntfs/file.c784
-rw-r--r--fs/ntfs/inode.c1
-rw-r--r--fs/ocfs2/aops.c1
-rw-r--r--fs/ocfs2/aops.h2
-rw-r--r--fs/ocfs2/file.c8
-rw-r--r--fs/open.c5
-rw-r--r--fs/pipe.c1
-rw-r--r--fs/read_write.c117
-rw-r--r--fs/reiserfs/inode.c2
-rw-r--r--fs/splice.c28
-rw-r--r--fs/stat.c2
-rw-r--r--fs/ubifs/file.c1
-rw-r--r--fs/udf/file.c4
-rw-r--r--fs/udf/inode.c2
-rw-r--r--fs/xfs/xfs_aops.c1
-rw-r--r--fs/xfs/xfs_file.c1
50 files changed, 602 insertions, 836 deletions
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index eb14e055ea83..ff1a5bac4200 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -33,7 +33,7 @@
#include <linux/pagemap.h>
#include <linux/idr.h>
#include <linux/sched.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
diff --git a/fs/affs/file.c b/fs/affs/file.c
index a91795e01a7f..3aa7eb66547e 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -12,7 +12,7 @@
* affs regular file handling primitives
*/
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "affs.h"
static struct buffer_head *affs_get_extblock_slow(struct inode *inode, u32 ext);
diff --git a/fs/afs/write.c b/fs/afs/write.c
index c13cb08964ed..0714abcd7f32 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -14,7 +14,6 @@
#include <linux/pagemap.h>
#include <linux/writeback.h>
#include <linux/pagevec.h>
-#include <linux/aio.h>
#include "internal.h"
static int afs_write_back_from_locked_page(struct afs_writeback *wb,
diff --git a/fs/aio.c b/fs/aio.c
index a793f7023755..1ab60010cf6c 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -151,6 +151,38 @@ struct kioctx {
unsigned id;
};
+/*
+ * We use ki_cancel == KIOCB_CANCELLED to indicate that a kiocb has been either
+ * cancelled or completed (this makes a certain amount of sense because
+ * successful cancellation - io_cancel() - does deliver the completion to
+ * userspace).
+ *
+ * And since most things don't implement kiocb cancellation and we'd really like
+ * kiocb completion to be lockless when possible, we use ki_cancel to
+ * synchronize cancellation and completion - we only set it to KIOCB_CANCELLED
+ * with xchg() or cmpxchg(), see batch_complete_aio() and kiocb_cancel().
+ */
+#define KIOCB_CANCELLED ((void *) (~0ULL))
+
+struct aio_kiocb {
+ struct kiocb common;
+
+ struct kioctx *ki_ctx;
+ kiocb_cancel_fn *ki_cancel;
+
+ struct iocb __user *ki_user_iocb; /* user's aiocb */
+ __u64 ki_user_data; /* user's data for completion */
+
+ struct list_head ki_list; /* the aio core uses this
+ * for cancellation */
+
+ /*
+ * If the aio_resfd field of the userspace iocb is not zero,
+ * this is the underlying eventfd context to deliver events to.
+ */
+ struct eventfd_ctx *ki_eventfd;
+};
+
/*------ sysctl variables----*/
static DEFINE_SPINLOCK(aio_nr_lock);
unsigned long aio_nr; /* current system wide number of aio requests */
@@ -220,7 +252,7 @@ static int __init aio_setup(void)
if (IS_ERR(aio_mnt))
panic("Failed to create aio fs mount.");
- kiocb_cachep = KMEM_CACHE(kiocb, SLAB_HWCACHE_ALIGN|SLAB_PANIC);
+ kiocb_cachep = KMEM_CACHE(aio_kiocb, SLAB_HWCACHE_ALIGN|SLAB_PANIC);
kioctx_cachep = KMEM_CACHE(kioctx,SLAB_HWCACHE_ALIGN|SLAB_PANIC);
pr_debug("sizeof(struct page) = %zu\n", sizeof(struct page));
@@ -484,8 +516,9 @@ static int aio_setup_ring(struct kioctx *ctx)
#define AIO_EVENTS_FIRST_PAGE ((PAGE_SIZE - sizeof(struct aio_ring)) / sizeof(struct io_event))
#define AIO_EVENTS_OFFSET (AIO_EVENTS_PER_PAGE - AIO_EVENTS_FIRST_PAGE)
-void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel)
+void kiocb_set_cancel_fn(struct kiocb *iocb, kiocb_cancel_fn *cancel)
{
+ struct aio_kiocb *req = container_of(iocb, struct aio_kiocb, common);
struct kioctx *ctx = req->ki_ctx;
unsigned long flags;
@@ -500,7 +533,7 @@ void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel)
}
EXPORT_SYMBOL(kiocb_set_cancel_fn);
-static int kiocb_cancel(struct kiocb *kiocb)
+static int kiocb_cancel(struct aio_kiocb *kiocb)
{
kiocb_cancel_fn *old, *cancel;
@@ -518,7 +551,7 @@ static int kiocb_cancel(struct kiocb *kiocb)
cancel = cmpxchg(&kiocb->ki_cancel, old, KIOCB_CANCELLED);
} while (cancel != old);
- return cancel(kiocb);
+ return cancel(&kiocb->common);
}
static void free_ioctx(struct work_struct *work)
@@ -554,13 +587,13 @@ static void free_ioctx_reqs(struct percpu_ref *ref)
static void free_ioctx_users(struct percpu_ref *ref)
{
struct kioctx *ctx = container_of(ref, struct kioctx, users);
- struct kiocb *req;
+ struct aio_kiocb *req;
spin_lock_irq(&ctx->ctx_lock);
while (!list_empty(&ctx->active_reqs)) {
req = list_first_entry(&ctx->active_reqs,
- struct kiocb, ki_list);
+ struct aio_kiocb, ki_list);
list_del_init(&req->ki_list);
kiocb_cancel(req);
@@ -786,22 +819,6 @@ static int kill_ioctx(struct mm_struct *mm, struct kioctx *ctx,
return 0;
}
-/* wait_on_sync_kiocb:
- * Waits on the given sync kiocb to complete.
- */
-ssize_t wait_on_sync_kiocb(struct kiocb *req)
-{
- while (!req->ki_ctx) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- if (req->ki_ctx)
- break;
- io_schedule();
- }
- __set_current_state(TASK_RUNNING);
- return req->ki_user_data;
-}
-EXPORT_SYMBOL(wait_on_sync_kiocb);
-
/*
* exit_aio: called when the last user of mm goes away. At this point, there is
* no way for any new requests to be submited or any of the io_* syscalls to be
@@ -956,9 +973,9 @@ static void user_refill_reqs_available(struct kioctx *ctx)
* Allocate a slot for an aio request.
* Returns NULL if no requests are free.
*/
-static inline struct kiocb *aio_get_req(struct kioctx *ctx)
+static inline struct aio_kiocb *aio_get_req(struct kioctx *ctx)
{
- struct kiocb *req;
+ struct aio_kiocb *req;
if (!get_reqs_available(ctx)) {
user_refill_reqs_available(ctx);
@@ -979,10 +996,10 @@ out_put:
return NULL;
}
-static void kiocb_free(struct kiocb *req)
+static void kiocb_free(struct aio_kiocb *req)
{
- if (req->ki_filp)
- fput(req->ki_filp);
+ if (req->common.ki_filp)
+ fput(req->common.ki_filp);
if (req->ki_eventfd != NULL)
eventfd_ctx_put(req->ki_eventfd);
kmem_cache_free(kiocb_cachep, req);
@@ -1018,8 +1035,9 @@ out:
/* aio_complete
* Called when the io request on the given iocb is complete.
*/
-void aio_complete(struct kiocb *iocb, long res, long res2)
+static void aio_complete(struct kiocb *kiocb, long res, long res2)
{
+ struct aio_kiocb *iocb = container_of(kiocb, struct aio_kiocb, common);
struct kioctx *ctx = iocb->ki_ctx;
struct aio_ring *ring;
struct io_event *ev_page, *event;
@@ -1033,13 +1051,7 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
* ref, no other paths have a way to get another ref
* - the sync task helpfully left a reference to itself in the iocb
*/
- if (is_sync_kiocb(iocb)) {
- iocb->ki_user_data = res;
- smp_wmb();
- iocb->ki_ctx = ERR_PTR(-EXDEV);
- wake_up_process(iocb->ki_obj.tsk);
- return;
- }
+ BUG_ON(is_sync_kiocb(kiocb));
if (iocb->ki_list.next) {
unsigned long flags;
@@ -1065,7 +1077,7 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
ev_page = kmap_atomic(ctx->ring_pages[pos / AIO_EVENTS_PER_PAGE]);
event = ev_page + pos % AIO_EVENTS_PER_PAGE;
- event->obj = (u64)(unsigned long)iocb->ki_obj.user;
+ event->obj = (u64)(unsigned long)iocb->ki_user_iocb;
event->data = iocb->ki_user_data;
event->res = res;
event->res2 = res2;
@@ -1074,7 +1086,7 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
flush_dcache_page(ctx->ring_pages[pos / AIO_EVENTS_PER_PAGE]);
pr_debug("%p[%u]: %p: %p %Lx %lx %lx\n",
- ctx, tail, iocb, iocb->ki_obj.user, iocb->ki_user_data,
+ ctx, tail, iocb, iocb->ki_user_iocb, iocb->ki_user_data,
res, res2);
/* after flagging the request as done, we
@@ -1121,7 +1133,6 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
percpu_ref_put(&ctx->reqs);
}
-EXPORT_SYMBOL(aio_complete);
/* aio_read_events_ring
* Pull an event off of the ioctx's event ring. Returns the number of
@@ -1349,46 +1360,19 @@ typedef ssize_t (aio_rw_op)(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
typedef ssize_t (rw_iter_op)(struct kiocb *, struct iov_iter *);
-static ssize_t aio_setup_vectored_rw(struct kiocb *kiocb,
- int rw, char __user *buf,
- unsigned long *nr_segs,
- struct iovec **iovec,
- bool compat)
+static int aio_setup_vectored_rw(int rw, char __user *buf, size_t len,
+ struct iovec **iovec,
+ bool compat,
+ struct iov_iter *iter)
{
- ssize_t ret;
-
- *nr_segs = kiocb->ki_nbytes;
-
#ifdef CONFIG_COMPAT
if (compat)
- ret = compat_rw_copy_check_uvector(rw,
+ return compat_import_iovec(rw,
(struct compat_iovec __user *)buf,
- *nr_segs, UIO_FASTIOV, *iovec, iovec);
- else
+ len, UIO_FASTIOV, iovec, iter);
#endif
- ret = rw_copy_check_uvector(rw,
- (struct iovec __user *)buf,
- *nr_segs, UIO_FASTIOV, *iovec, iovec);
- if (ret < 0)
- return ret;
-
- /* ki_nbytes now reflect bytes instead of segs */
- kiocb->ki_nbytes = ret;
- return 0;
-}
-
-static ssize_t aio_setup_single_vector(struct kiocb *kiocb,
- int rw, char __user *buf,
- unsigned long *nr_segs,
- struct iovec *iovec)
-{
- if (unlikely(!access_ok(!rw, buf, kiocb->ki_nbytes)))
- return -EFAULT;
-
- iovec->iov_base = buf;
- iovec->iov_len = kiocb->ki_nbytes;
- *nr_segs = 1;
- return 0;
+ return import_iovec(rw, (struct iovec __user *)buf,
+ len, UIO_FASTIOV, iovec, iter);
}
/*
@@ -1396,11 +1380,10 @@ static ssize_t aio_setup_single_vector(struct kiocb *kiocb,
* Performs the initial checks and io submission.
*/
static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,
- char __user *buf, bool compat)
+ char __user *buf, size_t len, bool compat)
{
struct file *file = req->ki_filp;
ssize_t ret;
- unsigned long nr_segs;
int rw;
fmode_t mode;
aio_rw_op *rw_op;
@@ -1431,21 +1414,22 @@ rw_common:
if (!rw_op && !iter_op)
return -EINVAL;
- ret = (opcode == IOCB_CMD_PREADV ||
- opcode == IOCB_CMD_PWRITEV)
- ? aio_setup_vectored_rw(req, rw, buf, &nr_segs,
- &iovec, compat)
- : aio_setup_single_vector(req, rw, buf, &nr_segs,
- iovec);
+ if (opcode == IOCB_CMD_PREADV || opcode == IOCB_CMD_PWRITEV)
+ ret = aio_setup_vectored_rw(rw, buf, len,
+ &iovec, compat, &iter);
+ else {
+ ret = import_single_range(rw, buf, len, iovec, &iter);
+ iovec = NULL;
+ }
if (!ret)
- ret = rw_verify_area(rw, file, &req->ki_pos, req->ki_nbytes);
+ ret = rw_verify_area(rw, file, &req->ki_pos,
+ iov_iter_count(&iter));
if (ret < 0) {
- if (iovec != inline_vecs)
- kfree(iovec);
+ kfree(iovec);
return ret;
}
- req->ki_nbytes = ret;
+ len = ret;
/* XXX: move/kill - rw_verify_area()? */
/* This matches the pread()/pwrite() logic */
@@ -1458,14 +1442,14 @@ rw_common:
file_start_write(file);
if (iter_op) {
- iov_iter_init(&iter, rw, iovec, nr_segs, req->ki_nbytes);
ret = iter_op(req, &iter);
} else {
- ret = rw_op(req, iovec, nr_segs, req->ki_pos);
+ ret = rw_op(req, iter.iov, iter.nr_segs, req->ki_pos);
}
if (rw == WRITE)
file_end_write(file);
+ kfree(iovec);
break;
case IOCB_CMD_FDSYNC:
@@ -1487,9 +1471,6 @@ rw_common:
return -EINVAL;
}
- if (iovec != inline_vecs)
- kfree(iovec);
-
if (ret != -EIOCBQUEUED) {
/*
* There's no easy way to restart the syscall since other AIO's
@@ -1508,7 +1489,7 @@ rw_common:
static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
struct iocb *iocb, bool compat)
{
- struct kiocb *req;
+ struct aio_kiocb *req;
ssize_t ret;
/* enforce forwards compatibility on users */
@@ -1531,11 +1512,14 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
if (unlikely(!req))
return -EAGAIN;
- req->ki_filp = fget(iocb->aio_fildes);
- if (unlikely(!req->ki_filp)) {
+ req->common.ki_filp = fget(iocb->aio_fildes);
+ if (unlikely(!req->common.ki_filp)) {
ret = -EBADF;
goto out_put_req;
}
+ req->common.ki_pos = iocb->aio_offset;
+ req->common.ki_complete = aio_complete;
+ req->common.ki_flags = 0;
if (iocb->aio_flags & IOCB_FLAG_RESFD) {
/*
@@ -1550,6 +1534,8 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
req->ki_eventfd = NULL;
goto out_put_req;
}
+
+ req->common.ki_flags |= IOCB_EVENTFD;
}
ret = put_user(KIOCB_KEY, &user_iocb->aio_key);
@@ -1558,13 +1544,12 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
goto out_put_req;
}
- req->ki_obj.user = user_iocb;
+ req->ki_user_iocb = user_iocb;
req->ki_user_data = iocb->aio_data;
- req->ki_pos = iocb->aio_offset;
- req->ki_nbytes = iocb->aio_nbytes;
- ret = aio_run_iocb(req, iocb->aio_lio_opcode,
+ ret = aio_run_iocb(&req->common, iocb->aio_lio_opcode,
(char __user *)(unsigned long)iocb->aio_buf,
+ iocb->aio_nbytes,
compat);
if (ret)
goto out_put_req;
@@ -1651,10 +1636,10 @@ SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr,
/* lookup_kiocb
* Finds a given iocb for cancellation.
*/
-static struct kiocb *lookup_kiocb(struct kioctx *ctx, struct iocb __user *iocb,
- u32 key)
+static struct aio_kiocb *
+lookup_kiocb(struct kioctx *ctx, struct iocb __user *iocb, u32 key)
{
- struct list_head *pos;
+ struct aio_kiocb *kiocb;
assert_spin_locked(&ctx->ctx_lock);
@@ -1662,9 +1647,8 @@ static struct kiocb *lookup_kiocb(struct kioctx *ctx, struct iocb __user *iocb,
return NULL;
/* TODO: use a hash or array, this sucks. */
- list_for_each(pos, &ctx->active_reqs) {
- struct kiocb *kiocb = list_kiocb(pos);
- if (kiocb->ki_obj.user == iocb)
+ list_for_each_entry(kiocb, &ctx->active_reqs, ki_list) {
+ if (kiocb->ki_user_iocb == iocb)
return kiocb;
}
return NULL;
@@ -1684,7 +1668,7 @@ SYSCALL_DEFINE3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb,
struct io_event __user *, result)
{
struct kioctx *ctx;
- struct kiocb *kiocb;
+ struct aio_kiocb *kiocb;
u32 key;
int ret;
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 90bc079d9982..fdcb4d69f430 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -15,6 +15,7 @@
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/writeback.h>
+#include <linux/uio.h>
#include <asm/uaccess.h>
#include "bfs.h"
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 975266be67d3..2e522aed6584 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -27,7 +27,6 @@
#include <linux/namei.h>
#include <linux/log2.h>
#include <linux/cleancache.h>
-#include <linux/aio.h>
#include <asm/uaccess.h>
#include "internal.h"
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 30982bbd31c3..aee18f84e315 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -24,7 +24,6 @@
#include <linux/string.h>
#include <linux/backing-dev.h>
#include <linux/mpage.h>
-#include <linux/aio.h>
#include <linux/falloc.h>
#include <linux/swap.h>
#include <linux/writeback.h>
@@ -32,6 +31,7 @@
#include <linux/compat.h>
#include <linux/slab.h>
#include <linux/btrfs.h>
+#include <linux/uio.h>
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d2e732d7af52..686331f22b15 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -32,7 +32,6 @@
#include <linux/writeback.h>
#include <linux/statfs.h>
#include <linux/compat.h>
-#include <linux/aio.h>
#include <linux/bit_spinlock.h>
#include <linux/xattr.h>
#include <linux/posix_acl.h>
@@ -43,6 +42,7 @@
#include <linux/btrfs.h>
#include <linux/blkdev.h>
#include <linux/posix_acl_xattr.h>
+#include <linux/uio.h>
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index d533075a823d..139f2fea91a0 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -7,7 +7,6 @@
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/writeback.h>
-#include <linux/aio.h>
#include <linux/falloc.h>
#include "super.h"
@@ -808,7 +807,7 @@ static ssize_t ceph_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *filp = iocb->ki_filp;
struct ceph_file_info *fi = filp->private_data;
- size_t len = iocb->ki_nbytes;
+ size_t len = iov_iter_count(to);
struct inode *inode = file_inode(filp);
struct ceph_inode_info *ci = ceph_inode(inode);
struct page *pinned_page = NULL;
diff --git a/fs/dcache.c b/fs/dcache.c
index c71e3732e53b..d99736a63e3c 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2690,7 +2690,7 @@ static int __d_unalias(struct inode *inode,
struct dentry *dentry, struct dentry *alias)
{
struct mutex *m1 = NULL, *m2 = NULL;
- int ret = -EBUSY;
+ int ret = -ESTALE;
/* If alias and dentry share a parent, then no extra locks required */
if (alias->d_parent == dentry->d_parent)
diff --git a/fs/direct-io.c b/fs/direct-io.c
index e181b6b2e297..6fb00e3f1059 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -37,7 +37,6 @@
#include <linux/uio.h>
#include <linux/atomic.h>
#include <linux/prefetch.h>
-#include <linux/aio.h>
/*
* How many user pages to map in one call to get_user_pages(). This determines
@@ -265,7 +264,7 @@ static ssize_t dio_complete(struct dio *dio, loff_t offset, ssize_t ret,
ret = err;
}
- aio_complete(dio->iocb, ret, 0);
+ dio->iocb->ki_complete(dio->iocb, ret, 0);
}
kmem_cache_free(dio_cache, dio);
@@ -1056,7 +1055,7 @@ static inline int drop_refcount(struct dio *dio)
* operation. AIO can if it was a broken operation described above or
* in fact if all the bios race to complete before we get here. In
* that case dio_complete() translates the EIOCBQUEUED into the proper
- * return code that the caller will hand to aio_complete().
+ * return code that the caller will hand to ->complete().
*
* This is managed by the bio_lock instead of being an atomic_t so that
* completion paths can drop their ref and use the remaining count to
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index fd39bad6f1bd..79675089443d 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -31,7 +31,6 @@
#include <linux/security.h>
#include <linux/compat.h>
#include <linux/fs_stack.h>
-#include <linux/aio.h>
#include "ecryptfs_kernel.h"
/**
@@ -52,12 +51,6 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb,
struct file *file = iocb->ki_filp;
rc = generic_file_read_iter(iocb, to);
- /*
- * Even though this is a async interface, we need to wait
- * for IO to finish to update atime
- */
- if (-EIOCBQUEUED == rc)
- rc = wait_on_sync_kiocb(iocb);
if (rc >= 0) {
path = ecryptfs_dentry_to_lower_path(file->f_path.dentry);
touch_atime(path);
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 6434bc000125..df9d6afbc5d5 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -31,7 +31,7 @@
#include <linux/mpage.h>
#include <linux/fiemap.h>
#include <linux/namei.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "ext2.h"
#include "acl.h"
#include "xattr.h"
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 2c6ccc49ba27..db07ffbe7c85 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -27,7 +27,7 @@
#include <linux/writeback.h>
#include <linux/mpage.h>
#include <linux/namei.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "ext3.h"
#include "xattr.h"
#include "acl.h"
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 33a09da16c9c..598abbbe6786 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -23,9 +23,9 @@
#include <linux/jbd2.h>
#include <linux/mount.h>
#include <linux/path.h>
-#include <linux/aio.h>
#include <linux/quotaops.h>
#include <linux/pagevec.h>
+#include <linux/uio.h>
#include "ext4.h"
#include "ext4_jbd2.h"
#include "xattr.h"
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 45fe924f82bc..740c7871c117 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -20,9 +20,9 @@
* (sct@redhat.com), 1993, 1998
*/
-#include <linux/aio.h>
#include "ext4_jbd2.h"
#include "truncate.h"
+#include <linux/uio.h>
#include <trace/events/ext4.h>
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 5cb9a212b86f..a3f451370bef 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -37,7 +37,6 @@
#include <linux/printk.h>
#include <linux/slab.h>
#include <linux/ratelimit.h>
-#include <linux/aio.h>
#include <linux/bitops.h>
#include "ext4_jbd2.h"
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index b24a2541a9ba..464984261e69 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -18,7 +18,6 @@
#include <linux/pagevec.h>
#include <linux/mpage.h>
#include <linux/namei.h>
-#include <linux/aio.h>
#include <linux/uio.h>
#include <linux/bio.h>
#include <linux/workqueue.h>
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 985ed023a750..497f8515d205 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -12,12 +12,12 @@
#include <linux/f2fs_fs.h>
#include <linux/buffer_head.h>
#include <linux/mpage.h>
-#include <linux/aio.h>
#include <linux/writeback.h>
#include <linux/backing-dev.h>
#include <linux/blkdev.h>
#include <linux/bio.h>
#include <linux/prefetch.h>
+#include <linux/uio.h>
#include "f2fs.h"
#include "node.h"
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 497c7c5263c7..8521207de229 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -19,7 +19,6 @@
#include <linux/mpage.h>
#include <linux/buffer_head.h>
#include <linux/mount.h>
-#include <linux/aio.h>
#include <linux/vfs.h>
#include <linux/parser.h>
#include <linux/uio.h>
diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index 28d0c7abba1c..b3fa05032234 100644
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -38,7 +38,6 @@
#include <linux/device.h>
#include <linux/file.h>
#include <linux/fs.h>
-#include <linux/aio.h>
#include <linux/kdev_t.h>
#include <linux/kthread.h>
#include <linux/list.h>
@@ -48,6 +47,7 @@
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/module.h>
+#include <linux/uio.h>
#include "fuse_i.h"
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 39706c57ad3c..95a2797eef66 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -19,7 +19,6 @@
#include <linux/pipe_fs_i.h>
#include <linux/swap.h>
#include <linux/splice.h>
-#include <linux/aio.h>
MODULE_ALIAS_MISCDEV(FUSE_MINOR);
MODULE_ALIAS("devname:fuse");
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index c01ec3bdcfd8..ff102cbf16ea 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -15,8 +15,8 @@
#include <linux/module.h>
#include <linux/compat.h>
#include <linux/swap.h>
-#include <linux/aio.h>
#include <linux/falloc.h>
+#include <linux/uio.h>
static const struct file_operations fuse_direct_io_file_operations;
@@ -528,6 +528,17 @@ static void fuse_release_user_pages(struct fuse_req *req, int write)
}
}
+static ssize_t fuse_get_res_by_io(struct fuse_io_priv *io)
+{
+ if (io->err)
+ return io->err;
+
+ if (io->bytes >= 0 && io->write)
+ return -EIO;
+
+ return io->bytes < 0 ? io->size : io->bytes;
+}
+
/**
* In case of short read, the caller sets 'pos' to the position of
* actual end of fuse request in IO request. Otherwise, if bytes_requested
@@ -546,6 +557,7 @@ static void fuse_release_user_pages(struct fuse_req *req, int write)
*/
static void fuse_aio_complete(struct fuse_io_priv *io, int err, ssize_t pos)
{
+ bool is_sync = is_sync_kiocb(io->iocb);
int left;
spin_lock(&io->lock);
@@ -555,30 +567,24 @@ static void fuse_aio_complete(struct fuse_io_priv *io, int err, ssize_t pos)
io->bytes = pos;
left = --io->reqs;
+ if (!left && is_sync)
+ complete(io->done);
spin_unlock(&io->lock);
- if (!left) {
- long res;
+ if (!left && !is_sync) {
+ ssize_t res = fuse_get_res_by_io(io);
- if (io->err)
- res = io->err;
- else if (io->bytes >= 0 && io->write)
- res = -EIO;
- else {
- res = io->bytes < 0 ? io->size : io->bytes;
+ if (res >= 0) {
+ struct inode *inode = file_inode(io->iocb->ki_filp);
+ struct fuse_conn *fc = get_fuse_conn(inode);
+ struct fuse_inode *fi = get_fuse_inode(inode);
- if (!is_sync_kiocb(io->iocb)) {
- struct inode *inode = file_inode(io->iocb->ki_filp);
- struct fuse_conn *fc = get_fuse_conn(inode);
- struct fuse_inode *fi = get_fuse_inode(inode);
-
- spin_lock(&fc->lock);
- fi->attr_version = ++fc->attr_version;
- spin_unlock(&fc->lock);
- }
+ spin_lock(&fc->lock);
+ fi->attr_version = ++fc->attr_version;
+ spin_unlock(&fc->lock);
}
- aio_complete(io->iocb, res, 0);
+ io->iocb->ki_complete(io->iocb, res, 0);
kfree(io);
}
}
@@ -2801,6 +2807,7 @@ static ssize_t
fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
{
+ DECLARE_COMPLETION_ONSTACK(wait);
ssize_t ret = 0;
struct file *file = iocb->ki_filp;
struct fuse_file *ff = file->private_data;
@@ -2852,6 +2859,9 @@ fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
if (!is_sync_kiocb(iocb) && (offset + count > i_size) && rw == WRITE)
io->async = false;
+ if (io->async && is_sync_kiocb(iocb))
+ io->done = &wait;
+
if (rw == WRITE)
ret = __fuse_direct_write(io, iter, &pos);
else
@@ -2864,11 +2874,12 @@ fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
if (!is_sync_kiocb(iocb))
return -EIOCBQUEUED;
- ret = wait_on_sync_kiocb(iocb);
- } else {
- kfree(io);
+ wait_for_completion(&wait);
+ ret = fuse_get_res_by_io(io);
}
+ kfree(io);
+
if (rw == WRITE) {
if (ret > 0)
fuse_write_update_size(inode, pos);
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 1cdfb07c1376..7354dc142a50 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -263,6 +263,7 @@ struct fuse_io_priv {
int err;
struct kiocb *iocb;
struct file *file;
+ struct completion *done;
};
/**
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 4ad4f94edebe..fe6634d25d1d 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -20,7 +20,7 @@
#include <linux/swap.h>
#include <linux/gfs2_ondisk.h>
#include <linux/backing-dev.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include <trace/events/writeback.h>
#include "gfs2.h"
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 3e32bb8e2d7e..f6fc412b1100 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -25,7 +25,6 @@
#include <asm/uaccess.h>
#include <linux/dlm.h>
#include <linux/dlm_plock.h>
-#include <linux/aio.h>
#include <linux/delay.h>
#include "gfs2.h"
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index d0929bc81782..98d4ea45bb70 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -14,7 +14,7 @@
#include <linux/pagemap.h>
#include <linux/mpage.h>
#include <linux/sched.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "hfs_fs.h"
#include "btree.h"
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 0cf786f2d046..f541196d4ee9 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -14,7 +14,7 @@
#include <linux/pagemap.h>
#include <linux/mpage.h>
#include <linux/sched.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index bd3df1ca3c9b..3197aed10614 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -22,8 +22,8 @@
#include <linux/buffer_head.h>
#include <linux/pagemap.h>
#include <linux/quotaops.h>
+#include <linux/uio.h>
#include <linux/writeback.h>
-#include <linux/aio.h>
#include "jfs_incore.h"
#include "jfs_inode.h"
#include "jfs_filsys.h"
diff --git a/fs/namei.c b/fs/namei.c
index c83145af4bfc..76fb76a0818b 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -119,15 +119,14 @@
* PATH_MAX includes the nul terminator --RR.
*/
-#define EMBEDDED_NAME_MAX (PATH_MAX - sizeof(struct filename))
+#define EMBEDDED_NAME_MAX (PATH_MAX - offsetof(struct filename, iname))
struct filename *
getname_flags(const char __user *filename, int flags, int *empty)
{
- struct filename *result, *err;
- int len;
- long max;
+ struct filename *result;
char *kname;
+ int len;
result = audit_reusename(filename);
if (result)
@@ -136,22 +135,18 @@ getname_flags(const char __user *filename, int flags, int *empty)
result = __getname();
if (unlikely(!result))
return ERR_PTR(-ENOMEM);
- result->refcnt = 1;
/*
* First, try to embed the struct filename inside the names_cache
* allocation
*/
- kname = (char *)result + sizeof(*result);
+ kname = (char *)result->iname;
result->name = kname;
- result->separate = false;
- max = EMBEDDED_NAME_MAX;
-recopy:
- len = strncpy_from_user(kname, filename, max);
+ len = strncpy_from_user(kname, filename, EMBEDDED_NAME_MAX);
if (unlikely(len < 0)) {
- err = ERR_PTR(len);
- goto error;
+ __putname(result);
+ return ERR_PTR(len);
}
/*
@@ -160,43 +155,49 @@ recopy:
* names_cache allocation for the pathname, and re-do the copy from
* userland.
*/
- if (len == EMBEDDED_NAME_MAX && max == EMBEDDED_NAME_MAX) {
+ if (unlikely(len == EMBEDDED_NAME_MAX)) {
+ const size_t size = offsetof(struct filename, iname[1]);
kname = (char *)result;
- result = kzalloc(sizeof(*result), GFP_KERNEL);
- if (!result) {
- err = ERR_PTR(-ENOMEM);
- result = (struct filename *)kname;
- goto error;
+ /*
+ * size is chosen that way we to guarantee that
+ * result->iname[0] is within the same object and that
+ * kname can't be equal to result->iname, no matter what.
+ */
+ result = kzalloc(size, GFP_KERNEL);
+ if (unlikely(!result)) {
+ __putname(kname);
+ return ERR_PTR(-ENOMEM);
}
result->name = kname;
- result->separate = true;
- result->refcnt = 1;
- max = PATH_MAX;
- goto recopy;
+ len = strncpy_from_user(kname, filename, PATH_MAX);
+ if (unlikely(len < 0)) {
+ __putname(kname);
+ kfree(result);
+ return ERR_PTR(len);
+ }
+ if (unlikely(len == PATH_MAX)) {
+ __putname(kname);
+ kfree(result);
+ return ERR_PTR(-ENAMETOOLONG);
+ }
}
+ result->refcnt = 1;
/* The empty path is special. */
if (unlikely(!len)) {
if (empty)
*empty = 1;
- err = ERR_PTR(-ENOENT);
- if (!(flags & LOOKUP_EMPTY))
- goto error;
+ if (!(flags & LOOKUP_EMPTY)) {
+ putname(result);
+ return ERR_PTR(-ENOENT);
+ }
}
- err = ERR_PTR(-ENAMETOOLONG);
- if (unlikely(len >= PATH_MAX))
- goto error;
-
result->uptr = filename;
result->aname = NULL;
audit_getname(result);
return result;
-
-error:
- putname(result);
- return err;
}
struct filename *
@@ -216,8 +217,7 @@ getname_kernel(const char * filename)
return ERR_PTR(-ENOMEM);
if (len <= EMBEDDED_NAME_MAX) {
- result->name = (char *)(result) + sizeof(*result);
- result->separate = false;
+ result->name = (char *)result->iname;
} else if (len <= PATH_MAX) {
struct filename *tmp;
@@ -227,7 +227,6 @@ getname_kernel(const char * filename)
return ERR_PTR(-ENOMEM);
}
tmp->name = (char *)result;
- tmp->separate = true;
result = tmp;
} else {
__putname(result);
@@ -249,7 +248,7 @@ void putname(struct filename *name)
if (--name->refcnt > 0)
return;
- if (name->separate) {
+ if (name->name != name->iname) {
__putname(name->name);
kfree(name);
} else
@@ -1851,10 +1850,11 @@ static int link_path_walk(const char *name, struct nameidata *nd)
return err;
}
-static int path_init(int dfd, const char *name, unsigned int flags,
+static int path_init(int dfd, const struct filename *name, unsigned int flags,
struct nameidata *nd)
{
int retval = 0;
+ const char *s = name->name;
nd->last_type = LAST_ROOT; /* if there are only slashes... */
nd->flags = flags | LOOKUP_JUMPED | LOOKUP_PARENT;
@@ -1863,7 +1863,7 @@ static int path_init(int dfd, const char *name, unsigned int flags,
if (flags & LOOKUP_ROOT) {
struct dentry *root = nd->root.dentry;
struct inode *inode = root->d_inode;
- if (*name) {
+ if (*s) {
if (!d_can_lookup(root))
return -ENOTDIR;
retval = inode_permission(inode, MAY_EXEC);
@@ -1885,7 +1885,7 @@ static int path_init(int dfd, const char *name, unsigned int flags,
nd->root.mnt = NULL;
nd->m_seq = read_seqbegin(&mount_lock);
- if (*name=='/') {
+ if (*s == '/') {
if (flags & LOOKUP_RCU) {
rcu_read_lock();
nd->seq = set_root_rcu(nd);
@@ -1919,7 +1919,7 @@ static int path_init(int dfd, const char *name, unsigned int flags,
dentry = f.file->f_path.dentry;
- if (*name) {
+ if (*s) {
if (!d_can_lookup(dentry)) {
fdput(f);
return -ENOTDIR;
@@ -1949,7 +1949,7 @@ static int path_init(int dfd, const char *name, unsigned int flags,
return -ECHILD;
done:
current->total_link_count = 0;
- return link_path_walk(name, nd);
+ return link_path_walk(s, nd);
}
static void path_cleanup(struct nameidata *nd)
@@ -1972,7 +1972,7 @@ static inline int lookup_last(struct nameidata *nd, struct path *path)
}
/* Returns 0 and nd will be valid on success; Retuns error, otherwise. */
-static int path_lookupat(int dfd, const char *name,
+static int path_lookupat(int dfd, const struct filename *name,
unsigned int flags, struct nameidata *nd)
{
struct path path;
@@ -2027,31 +2027,17 @@ static int path_lookupat(int dfd, const char *name,
static int filename_lookup(int dfd, struct filename *name,
unsigned int flags, struct nameidata *nd)
{
- int retval = path_lookupat(dfd, name->name, flags | LOOKUP_RCU, nd);
+ int retval = path_lookupat(dfd, name, flags | LOOKUP_RCU, nd);
if (unlikely(retval == -ECHILD))
- retval = path_lookupat(dfd, name->name, flags, nd);
+ retval = path_lookupat(dfd, name, flags, nd);
if (unlikely(retval == -ESTALE))
- retval = path_lookupat(dfd, name->name,
- flags | LOOKUP_REVAL, nd);
+ retval = path_lookupat(dfd, name, flags | LOOKUP_REVAL, nd);
if (likely(!retval))
audit_inode(name, nd->path.dentry, flags & LOOKUP_PARENT);
return retval;
}
-static int do_path_lookup(int dfd, const char *name,
- unsigned int flags, struct nameidata *nd)
-{
- struct filename *filename = getname_kernel(name);
- int retval = PTR_ERR(filename);
-
- if (!IS_ERR(filename)) {
- retval = filename_lookup(dfd, filename, flags, nd);
- putname(filename);
- }
- return retval;
-}
-
/* does lookup, returns the object with parent locked */
struct dentry *kern_path_locked(const char *name, struct path *path)
{
@@ -2089,9 +2075,15 @@ out:
int kern_path(const char *name, unsigned int flags, struct path *path)
{
struct nameidata nd;
- int res = do_path_lookup(AT_FDCWD, name, flags, &nd);
- if (!res)
- *path = nd.path;
+ struct filename *filename = getname_kernel(name);
+ int res = PTR_ERR(filename);
+
+ if (!IS_ERR(filename)) {
+ res = filename_lookup(AT_FDCWD, filename, flags, &nd);
+ putname(filename);
+ if (!res)
+ *path = nd.path;
+ }
return res;
}
EXPORT_SYMBOL(kern_path);
@@ -2108,15 +2100,22 @@ int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt,
const char *name, unsigned int flags,
struct path *path)
{
- struct nameidata nd;
- int err;
- nd.root.dentry = dentry;
- nd.root.mnt = mnt;
+ struct filename *filename = getname_kernel(name);
+ int err = PTR_ERR(filename);
+
BUG_ON(flags & LOOKUP_PARENT);
- /* the first argument of do_path_lookup() is ignored with LOOKUP_ROOT */
- err = do_path_lookup(AT_FDCWD, name, flags | LOOKUP_ROOT, &nd);
- if (!err)
- *path = nd.path;
+
+ /* the first argument of filename_lookup() is ignored with LOOKUP_ROOT */
+ if (!IS_ERR(filename)) {
+ struct nameidata nd;
+ nd.root.dentry = dentry;
+ nd.root.mnt = mnt;
+ err = filename_lookup(AT_FDCWD, filename,
+ flags | LOOKUP_ROOT, &nd);
+ if (!err)
+ *path = nd.path;
+ putname(filename);
+ }
return err;
}
EXPORT_SYMBOL(vfs_path_lookup);
@@ -2138,9 +2137,7 @@ static struct dentry *lookup_hash(struct nameidata *nd)
* @len: maximum length @len should be interpreted to
*
* Note that this routine is purely a helper for filesystem usage and should
- * not be called by generic code. Also note that by using this function the
- * nameidata argument is passed to the filesystem methods and a filesystem
- * using this helper needs to be prepared for that.
+ * not be called by generic code.
*/
struct dentry *lookup_one_len(const char *name, struct dentry *base, int len)
{
@@ -2341,7 +2338,8 @@ out:
* Returns 0 and "path" will be valid on success; Returns error otherwise.
*/
static int
-path_mountpoint(int dfd, const char *name, struct path *path, unsigned int flags)
+path_mountpoint(int dfd, const struct filename *name, struct path *path,
+ unsigned int flags)
{
struct nameidata nd;
int err;
@@ -2370,20 +2368,20 @@ out:
}
static int
-filename_mountpoint(int dfd, struct filename *s, struct path *path,
+filename_mountpoint(int dfd, struct filename *name, struct path *path,
unsigned int flags)
{
int error;
- if (IS_ERR(s))
- return PTR_ERR(s);
- error = path_mountpoint(dfd, s->name, path, flags | LOOKUP_RCU);
+ if (IS_ERR(name))
+ return PTR_ERR(name);
+ error = path_mountpoint(dfd, name, path, flags | LOOKUP_RCU);
if (unlikely(error == -ECHILD))
- error = path_mountpoint(dfd, s->name, path, flags);
+ error = path_mountpoint(dfd, name, path, flags);
if (unlikely(error == -ESTALE))
- error = path_mountpoint(dfd, s->name, path, flags | LOOKUP_REVAL);
+ error = path_mountpoint(dfd, name, path, flags | LOOKUP_REVAL);
if (likely(!error))
- audit_inode(s, path->dentry, 0);
- putname(s);
+ audit_inode(name, path->dentry, 0);
+ putname(name);
return error;
}
@@ -3156,7 +3154,7 @@ static int do_tmpfile(int dfd, struct filename *pathname,
static const struct qstr name = QSTR_INIT("/", 1);
struct dentry *dentry, *child;
struct inode *dir;
- int error = path_lookupat(dfd, pathname->name,
+ int error = path_lookupat(dfd, pathname,
flags | LOOKUP_DIRECTORY, nd);
if (unlikely(error))
return error;
@@ -3229,7 +3227,7 @@ static struct file *path_openat(int dfd, struct filename *pathname,
goto out;
}
- error = path_init(dfd, pathname->name, flags, nd);
+ error = path_init(dfd, pathname, flags, nd);
if (unlikely(error))
goto out;
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index e907c8cf732e..c3929fb2ab26 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -265,7 +265,7 @@ ssize_t nfs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, loff_t
return -EINVAL;
#else
- VM_BUG_ON(iocb->ki_nbytes != PAGE_SIZE);
+ VM_BUG_ON(iov_iter_count(iter) != PAGE_SIZE);
if (rw == READ)
return nfs_file_direct_read(iocb, iter, pos);
@@ -393,7 +393,7 @@ static void nfs_direct_complete(struct nfs_direct_req *dreq, bool write)
long res = (long) dreq->error;
if (!res)
res = (long) dreq->count;
- aio_complete(dreq->iocb, res, 0);
+ dreq->iocb->ki_complete(dreq->iocb, res, 0);
}
complete_all(&dreq->completion);
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index e679d24c39d3..37b15582e0de 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -26,7 +26,6 @@
#include <linux/nfs_mount.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
-#include <linux/aio.h>
#include <linux/gfp.h>
#include <linux/swap.h>
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 8b5969538f39..ab4987bc637f 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -26,7 +26,7 @@
#include <linux/mpage.h>
#include <linux/pagemap.h>
#include <linux/writeback.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "nilfs.h"
#include "btnode.h"
#include "segment.h"
diff --git a/fs/ntfs/Makefile b/fs/ntfs/Makefile
index 36ae529511c4..2ff263e6d363 100644
--- a/fs/ntfs/Makefile
+++ b/fs/ntfs/Makefile
@@ -8,7 +8,7 @@ ntfs-y := aops.o attrib.o collate.o compress.o debug.o dir.o file.o \
ntfs-$(CONFIG_NTFS_RW) += bitmap.o lcnalloc.o logfile.o quota.o usnjrnl.o
-ccflags-y := -DNTFS_VERSION=\"2.1.31\"
+ccflags-y := -DNTFS_VERSION=\"2.1.32\"
ccflags-$(CONFIG_NTFS_DEBUG) += -DDEBUG
ccflags-$(CONFIG_NTFS_RW) += -DNTFS_RW
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index 1da9b2d184dc..c1da78dad1af 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -1,7 +1,7 @@
/*
* file.c - NTFS kernel file operations. Part of the Linux-NTFS project.
*
- * Copyright (c) 2001-2014 Anton Altaparmakov and Tuxera Inc.
+ * Copyright (c) 2001-2015 Anton Altaparmakov and Tuxera Inc.
*
* This program/include file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
@@ -28,7 +28,6 @@
#include <linux/swap.h>
#include <linux/uio.h>
#include <linux/writeback.h>
-#include <linux/aio.h>
#include <asm/page.h>
#include <asm/uaccess.h>
@@ -329,62 +328,168 @@ err_out:
return err;
}
-/**
- * ntfs_fault_in_pages_readable -
- *
- * Fault a number of userspace pages into pagetables.
- *
- * Unlike include/linux/pagemap.h::fault_in_pages_readable(), this one copes
- * with more than two userspace pages as well as handling the single page case
- * elegantly.
- *
- * If you find this difficult to understand, then think of the while loop being
- * the following code, except that we do without the integer variable ret:
- *
- * do {
- * ret = __get_user(c, uaddr);
- * uaddr += PAGE_SIZE;
- * } while (!ret && uaddr < end);
- *
- * Note, the final __get_user() may well run out-of-bounds of the user buffer,
- * but _not_ out-of-bounds of the page the user buffer belongs to, and since
- * this is only a read and not a write, and since it is still in the same page,
- * it should not matter and this makes the code much simpler.
- */
-static inline void ntfs_fault_in_pages_readable(const char __user *uaddr,
- int bytes)
+static ssize_t ntfs_prepare_file_for_write(struct file *file, loff_t *ppos,
+ size_t *count)
{
- const char __user *end;
- volatile char c;
-
- /* Set @end to the first byte outside the last page we care about. */
- end = (const char __user*)PAGE_ALIGN((unsigned long)uaddr + bytes);
-
- while (!__get_user(c, uaddr) && (uaddr += PAGE_SIZE, uaddr < end))
- ;
-}
-
-/**
- * ntfs_fault_in_pages_readable_iovec -
- *
- * Same as ntfs_fault_in_pages_readable() but operates on an array of iovecs.
- */
-static inline void ntfs_fault_in_pages_readable_iovec(const struct iovec *iov,
- size_t iov_ofs, int bytes)
-{
- do {
- const char __user *buf;
- unsigned len;
+ loff_t pos;
+ s64 end, ll;
+ ssize_t err;
+ unsigned long flags;
+ struct inode *vi = file_inode(file);
+ ntfs_inode *base_ni, *ni = NTFS_I(vi);
+ ntfs_volume *vol = ni->vol;
- buf = iov->iov_base + iov_ofs;
- len = iov->iov_len - iov_ofs;
- if (len > bytes)
- len = bytes;
- ntfs_fault_in_pages_readable(buf, len);
- bytes -= len;
- iov++;
- iov_ofs = 0;
- } while (bytes);
+ ntfs_debug("Entering for i_ino 0x%lx, attribute type 0x%x, pos "
+ "0x%llx, count 0x%lx.", vi->i_ino,
+ (unsigned)le32_to_cpu(ni->type),
+ (unsigned long long)*ppos, (unsigned long)*count);
+ /* We can write back this queue in page reclaim. */
+ current->backing_dev_info = inode_to_bdi(vi);
+ err = generic_write_checks(file, ppos, count, S_ISBLK(vi->i_mode));
+ if (unlikely(err))
+ goto out;
+ /*
+ * All checks have passed. Before we start doing any writing we want
+ * to abort any totally illegal writes.
+ */
+ BUG_ON(NInoMstProtected(ni));
+ BUG_ON(ni->type != AT_DATA);
+ /* If file is encrypted, deny access, just like NT4. */
+ if (NInoEncrypted(ni)) {
+ /* Only $DATA attributes can be encrypted. */
+ /*
+ * Reminder for later: Encrypted files are _always_
+ * non-resident so that the content can always be encrypted.
+ */
+ ntfs_debug("Denying write access to encrypted file.");
+ err = -EACCES;
+ goto out;
+ }
+ if (NInoCompressed(ni)) {
+ /* Only unnamed $DATA attribute can be compressed. */
+ BUG_ON(ni->name_len);
+ /*
+ * Reminder for later: If resident, the data is not actually
+ * compressed. Only on the switch to non-resident does
+ * compression kick in. This is in contrast to encrypted files
+ * (see above).
+ */
+ ntfs_error(vi->i_sb, "Writing to compressed files is not "
+ "implemented yet. Sorry.");
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ if (*count == 0)
+ goto out;
+ base_ni = ni;
+ if (NInoAttr(ni))
+ base_ni = ni->ext.base_ntfs_ino;
+ err = file_remove_suid(file);
+ if (unlikely(err))
+ goto out;
+ /*
+ * Our ->update_time method always succeeds thus file_update_time()
+ * cannot fail either so there is no need to check the return code.
+ */
+ file_update_time(file);
+ pos = *ppos;
+ /* The first byte after the last cluster being written to. */
+ end = (pos + *count + vol->cluster_size_mask) &
+ ~(u64)vol->cluster_size_mask;
+ /*
+ * If the write goes beyond the allocated size, extend the allocation
+ * to cover the whole of the write, rounded up to the nearest cluster.
+ */
+ read_lock_irqsave(&ni->size_lock, flags);
+ ll = ni->allocated_size;
+ read_unlock_irqrestore(&ni->size_lock, flags);
+ if (end > ll) {
+ /*
+ * Extend the allocation without changing the data size.
+ *
+ * Note we ensure the allocation is big enough to at least
+ * write some data but we do not require the allocation to be
+ * complete, i.e. it may be partial.
+ */
+ ll = ntfs_attr_extend_allocation(ni, end, -1, pos);
+ if (likely(ll >= 0)) {
+ BUG_ON(pos >= ll);
+ /* If the extension was partial truncate the write. */
+ if (end > ll) {
+ ntfs_debug("Truncating write to inode 0x%lx, "
+ "attribute type 0x%x, because "
+ "the allocation was only "
+ "partially extended.",
+ vi->i_ino, (unsigned)
+ le32_to_cpu(ni->type));
+ *count = ll - pos;
+ }
+ } else {
+ err = ll;
+ read_lock_irqsave(&ni->size_lock, flags);
+ ll = ni->allocated_size;
+ read_unlock_irqrestore(&ni->size_lock, flags);
+ /* Perform a partial write if possible or fail. */
+ if (pos < ll) {
+ ntfs_debug("Truncating write to inode 0x%lx "
+ "attribute type 0x%x, because "
+ "extending the allocation "
+ "failed (error %d).",
+ vi->i_ino, (unsigned)
+ le32_to_cpu(ni->type),
+ (int)-err);
+ *count = ll - pos;
+ } else {
+ if (err != -ENOSPC)
+ ntfs_error(vi->i_sb, "Cannot perform "
+ "write to inode "
+ "0x%lx, attribute "
+ "type 0x%x, because "
+ "extending the "
+ "allocation failed "
+ "(error %ld).",
+ vi->i_ino, (unsigned)
+ le32_to_cpu(ni->type),
+ (long)-err);
+ else
+ ntfs_debug("Cannot perform write to "
+ "inode 0x%lx, "
+ "attribute type 0x%x, "
+ "because there is not "
+ "space left.",
+ vi->i_ino, (unsigned)
+ le32_to_cpu(ni->type));
+ goto out;
+ }
+ }
+ }
+ /*
+ * If the write starts beyond the initialized size, extend it up to the
+ * beginning of the write and initialize all non-sparse space between
+ * the old initialized size and the new one. This automatically also
+ * increments the vfs inode->i_size to keep it above or equal to the
+ * initialized_size.
+ */
+ read_lock_irqsave(&ni->size_lock, flags);
+ ll = ni->initialized_size;
+ read_unlock_irqrestore(&ni->size_lock, flags);
+ if (pos > ll) {
+ /*
+ * Wait for ongoing direct i/o to complete before proceeding.
+ * New direct i/o cannot start as we hold i_mutex.
+ */
+ inode_dio_wait(vi);
+ err = ntfs_attr_extend_initialized(ni, pos);
+ if (unlikely(err < 0))
+ ntfs_error(vi->i_sb, "Cannot perform write to inode "
+ "0x%lx, attribute type 0x%x, because "
+ "extending the initialized size "
+ "failed (error %d).", vi->i_ino,
+ (unsigned)le32_to_cpu(ni->type),
+ (int)-err);
+ }
+out:
+ return err;
}
/**
@@ -421,8 +526,8 @@ static inline int __ntfs_grab_cache_pages(struct address_space *mapping,
goto err_out;
}
}
- err = add_to_page_cache_lru(*cached_page, mapping, index,
- GFP_KERNEL);
+ err = add_to_page_cache_lru(*cached_page, mapping,
+ index, GFP_KERNEL);
if (unlikely(err)) {
if (err == -EEXIST)
continue;
@@ -1268,180 +1373,6 @@ rl_not_mapped_enoent:
return err;
}
-/*
- * Copy as much as we can into the pages and return the number of bytes which
- * were successfully copied. If a fault is encountered then clear the pages
- * out to (ofs + bytes) and return the number of bytes which were copied.
- */
-static inline size_t ntfs_copy_from_user(struct page **pages,
- unsigned nr_pages, unsigned ofs, const char __user *buf,
- size_t bytes)
-{
- struct page **last_page = pages + nr_pages;
- char *addr;
- size_t total = 0;
- unsigned len;
- int left;
-
- do {
- len = PAGE_CACHE_SIZE - ofs;
- if (len > bytes)
- len = bytes;
- addr = kmap_atomic(*pages);
- left = __copy_from_user_inatomic(addr + ofs, buf, len);
- kunmap_atomic(addr);
- if (unlikely(left)) {
- /* Do it the slow way. */
- addr = kmap(*pages);
- left = __copy_from_user(addr + ofs, buf, len);
- kunmap(*pages);
- if (unlikely(left))
- goto err_out;
- }
- total += len;
- bytes -= len;
- if (!bytes)
- break;
- buf += len;
- ofs = 0;
- } while (++pages < last_page);
-out:
- return total;
-err_out:
- total += len - left;
- /* Zero the rest of the target like __copy_from_user(). */
- while (++pages < last_page) {
- bytes -= len;
- if (!bytes)
- break;
- len = PAGE_CACHE_SIZE;
- if (len > bytes)
- len = bytes;
- zero_user(*pages, 0, len);
- }
- goto out;
-}
-
-static size_t __ntfs_copy_from_user_iovec_inatomic(char *vaddr,
- const struct iovec *iov, size_t iov_ofs, size_t bytes)
-{
- size_t total = 0;
-
- while (1) {
- const char __user *buf = iov->iov_base + iov_ofs;
- unsigned len;
- size_t left;
-
- len = iov->iov_len - iov_ofs;
- if (len > bytes)
- len = bytes;
- left = __copy_from_user_inatomic(vaddr, buf, len);
- total += len;
- bytes -= len;
- vaddr += len;
- if (unlikely(left)) {
- total -= left;
- break;
- }
- if (!bytes)
- break;
- iov++;
- iov_ofs = 0;
- }
- return total;
-}
-
-static inline void ntfs_set_next_iovec(const struct iovec **iovp,
- size_t *iov_ofsp, size_t bytes)
-{
- const struct iovec *iov = *iovp;
- size_t iov_ofs = *iov_ofsp;
-
- while (bytes) {
- unsigned len;
-
- len = iov->iov_len - iov_ofs;
- if (len > bytes)
- len = bytes;
- bytes -= len;
- iov_ofs += len;
- if (iov->iov_len == iov_ofs) {
- iov++;
- iov_ofs = 0;
- }
- }
- *iovp = iov;
- *iov_ofsp = iov_ofs;
-}
-
-/*
- * This has the same side-effects and return value as ntfs_copy_from_user().
- * The difference is that on a fault we need to memset the remainder of the
- * pages (out to offset + bytes), to emulate ntfs_copy_from_user()'s
- * single-segment behaviour.
- *
- * We call the same helper (__ntfs_copy_from_user_iovec_inatomic()) both when
- * atomic and when not atomic. This is ok because it calls
- * __copy_from_user_inatomic() and it is ok to call this when non-atomic. In
- * fact, the only difference between __copy_from_user_inatomic() and
- * __copy_from_user() is that the latter calls might_sleep() and the former
- * should not zero the tail of the buffer on error. And on many architectures
- * __copy_from_user_inatomic() is just defined to __copy_from_user() so it
- * makes no difference at all on those architectures.
- */
-static inline size_t ntfs_copy_from_user_iovec(struct page **pages,
- unsigned nr_pages, unsigned ofs, const struct iovec **iov,
- size_t *iov_ofs, size_t bytes)
-{
- struct page **last_page = pages + nr_pages;
- char *addr;
- size_t copied, len, total = 0;
-
- do {
- len = PAGE_CACHE_SIZE - ofs;
- if (len > bytes)
- len = bytes;
- addr = kmap_atomic(*pages);
- copied = __ntfs_copy_from_user_iovec_inatomic(addr + ofs,
- *iov, *iov_ofs, len);
- kunmap_atomic(addr);
- if (unlikely(copied != len)) {
- /* Do it the slow way. */
- addr = kmap(*pages);
- copied = __ntfs_copy_from_user_iovec_inatomic(addr +
- ofs, *iov, *iov_ofs, len);
- if (unlikely(copied != len))
- goto err_out;
- kunmap(*pages);
- }
- total += len;
- ntfs_set_next_iovec(iov, iov_ofs, len);
- bytes -= len;
- if (!bytes)
- break;
- ofs = 0;
- } while (++pages < last_page);
-out:
- return total;
-err_out:
- BUG_ON(copied > len);
- /* Zero the rest of the target like __copy_from_user(). */
- memset(addr + ofs + copied, 0, len - copied);
- kunmap(*pages);
- total += copied;
- ntfs_set_next_iovec(iov, iov_ofs, copied);
- while (++pages < last_page) {
- bytes -= len;
- if (!bytes)
- break;
- len = PAGE_CACHE_SIZE;
- if (len > bytes)
- len = bytes;
- zero_user(*pages, 0, len);
- }
- goto out;
-}
-
static inline void ntfs_flush_dcache_pages(struct page **pages,
unsigned nr_pages)
{
@@ -1762,86 +1693,83 @@ err_out:
return err;
}
-static void ntfs_write_failed(struct address_space *mapping, loff_t to)
+/*
+ * Copy as much as we can into the pages and return the number of bytes which
+ * were successfully copied. If a fault is encountered then clear the pages
+ * out to (ofs + bytes) and return the number of bytes which were copied.
+ */
+static size_t ntfs_copy_from_user_iter(struct page **pages, unsigned nr_pages,
+ unsigned ofs, struct iov_iter *i, size_t bytes)
{
- struct inode *inode = mapping->host;
+ struct page **last_page = pages + nr_pages;
+ size_t total = 0;
+ struct iov_iter data = *i;
+ unsigned len, copied;
- if (to > inode->i_size) {
- truncate_pagecache(inode, inode->i_size);
- ntfs_truncate_vfs(inode);
- }
+ do {
+ len = PAGE_CACHE_SIZE - ofs;
+ if (len > bytes)
+ len = bytes;
+ copied = iov_iter_copy_from_user_atomic(*pages, &data, ofs,
+ len);
+ total += copied;
+ bytes -= copied;
+ if (!bytes)
+ break;
+ iov_iter_advance(&data, copied);
+ if (copied < len)
+ goto err;
+ ofs = 0;
+ } while (++pages < last_page);
+out:
+ return total;
+err:
+ /* Zero the rest of the target like __copy_from_user(). */
+ len = PAGE_CACHE_SIZE - copied;
+ do {
+ if (len > bytes)
+ len = bytes;
+ zero_user(*pages, copied, len);
+ bytes -= len;
+ copied = 0;
+ len = PAGE_CACHE_SIZE;
+ } while (++pages < last_page);
+ goto out;
}
/**
- * ntfs_file_buffered_write -
- *
- * Locking: The vfs is holding ->i_mutex on the inode.
+ * ntfs_perform_write - perform buffered write to a file
+ * @file: file to write to
+ * @i: iov_iter with data to write
+ * @pos: byte offset in file at which to begin writing to
*/
-static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
- const struct iovec *iov, unsigned long nr_segs,
- loff_t pos, loff_t *ppos, size_t count)
+static ssize_t ntfs_perform_write(struct file *file, struct iov_iter *i,
+ loff_t pos)
{
- struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
struct inode *vi = mapping->host;
ntfs_inode *ni = NTFS_I(vi);
ntfs_volume *vol = ni->vol;
struct page *pages[NTFS_MAX_PAGES_PER_CLUSTER];
struct page *cached_page = NULL;
- char __user *buf = NULL;
- s64 end, ll;
VCN last_vcn;
LCN lcn;
- unsigned long flags;
- size_t bytes, iov_ofs = 0; /* Offset in the current iovec. */
- ssize_t status, written;
+ size_t bytes;
+ ssize_t status, written = 0;
unsigned nr_pages;
- int err;
- ntfs_debug("Entering for i_ino 0x%lx, attribute type 0x%x, "
- "pos 0x%llx, count 0x%lx.",
- vi->i_ino, (unsigned)le32_to_cpu(ni->type),
- (unsigned long long)pos, (unsigned long)count);
- if (unlikely(!count))
- return 0;
- BUG_ON(NInoMstProtected(ni));
- /*
- * If the attribute is not an index root and it is encrypted or
- * compressed, we cannot write to it yet. Note we need to check for
- * AT_INDEX_ALLOCATION since this is the type of both directory and
- * index inodes.
- */
- if (ni->type != AT_INDEX_ALLOCATION) {
- /* If file is encrypted, deny access, just like NT4. */
- if (NInoEncrypted(ni)) {
- /*
- * Reminder for later: Encrypted files are _always_
- * non-resident so that the content can always be
- * encrypted.
- */
- ntfs_debug("Denying write access to encrypted file.");
- return -EACCES;
- }
- if (NInoCompressed(ni)) {
- /* Only unnamed $DATA attribute can be compressed. */
- BUG_ON(ni->type != AT_DATA);
- BUG_ON(ni->name_len);
- /*
- * Reminder for later: If resident, the data is not
- * actually compressed. Only on the switch to non-
- * resident does compression kick in. This is in
- * contrast to encrypted files (see above).
- */
- ntfs_error(vi->i_sb, "Writing to compressed files is "
- "not implemented yet. Sorry.");
- return -EOPNOTSUPP;
- }
- }
+ ntfs_debug("Entering for i_ino 0x%lx, attribute type 0x%x, pos "
+ "0x%llx, count 0x%lx.", vi->i_ino,
+ (unsigned)le32_to_cpu(ni->type),
+ (unsigned long long)pos,
+ (unsigned long)iov_iter_count(i));
/*
* If a previous ntfs_truncate() failed, repeat it and abort if it
* fails again.
*/
if (unlikely(NInoTruncateFailed(ni))) {
+ int err;
+
inode_dio_wait(vi);
err = ntfs_truncate(vi);
if (err || NInoTruncateFailed(ni)) {
@@ -1855,81 +1783,6 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
return err;
}
}
- /* The first byte after the write. */
- end = pos + count;
- /*
- * If the write goes beyond the allocated size, extend the allocation
- * to cover the whole of the write, rounded up to the nearest cluster.
- */
- read_lock_irqsave(&ni->size_lock, flags);
- ll = ni->allocated_size;
- read_unlock_irqrestore(&ni->size_lock, flags);
- if (end > ll) {
- /* Extend the allocation without changing the data size. */
- ll = ntfs_attr_extend_allocation(ni, end, -1, pos);
- if (likely(ll >= 0)) {
- BUG_ON(pos >= ll);
- /* If the extension was partial truncate the write. */
- if (end > ll) {
- ntfs_debug("Truncating write to inode 0x%lx, "
- "attribute type 0x%x, because "
- "the allocation was only "
- "partially extended.",
- vi->i_ino, (unsigned)
- le32_to_cpu(ni->type));
- end = ll;
- count = ll - pos;
- }
- } else {
- err = ll;
- read_lock_irqsave(&ni->size_lock, flags);
- ll = ni->allocated_size;
- read_unlock_irqrestore(&ni->size_lock, flags);
- /* Perform a partial write if possible or fail. */
- if (pos < ll) {
- ntfs_debug("Truncating write to inode 0x%lx, "
- "attribute type 0x%x, because "
- "extending the allocation "
- "failed (error code %i).",
- vi->i_ino, (unsigned)
- le32_to_cpu(ni->type), err);
- end = ll;
- count = ll - pos;
- } else {
- ntfs_error(vol->sb, "Cannot perform write to "
- "inode 0x%lx, attribute type "
- "0x%x, because extending the "
- "allocation failed (error "
- "code %i).", vi->i_ino,
- (unsigned)
- le32_to_cpu(ni->type), err);
- return err;
- }
- }
- }
- written = 0;
- /*
- * If the write starts beyond the initialized size, extend it up to the
- * beginning of the write and initialize all non-sparse space between
- * the old initialized size and the new one. This automatically also
- * increments the vfs inode->i_size to keep it above or equal to the
- * initialized_size.
- */
- read_lock_irqsave(&ni->size_lock, flags);
- ll = ni->initialized_size;
- read_unlock_irqrestore(&ni->size_lock, flags);
- if (pos > ll) {
- err = ntfs_attr_extend_initialized(ni, pos);
- if (err < 0) {
- ntfs_error(vol->sb, "Cannot perform write to inode "
- "0x%lx, attribute type 0x%x, because "
- "extending the initialized size "
- "failed (error code %i).", vi->i_ino,
- (unsigned)le32_to_cpu(ni->type), err);
- status = err;
- goto err_out;
- }
- }
/*
* Determine the number of pages per cluster for non-resident
* attributes.
@@ -1937,10 +1790,7 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
nr_pages = 1;
if (vol->cluster_size > PAGE_CACHE_SIZE && NInoNonResident(ni))
nr_pages = vol->cluster_size >> PAGE_CACHE_SHIFT;
- /* Finally, perform the actual write. */
last_vcn = -1;
- if (likely(nr_segs == 1))
- buf = iov->iov_base;
do {
VCN vcn;
pgoff_t idx, start_idx;
@@ -1965,10 +1815,10 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
vol->cluster_size_bits, false);
up_read(&ni->runlist.lock);
if (unlikely(lcn < LCN_HOLE)) {
- status = -EIO;
if (lcn == LCN_ENOMEM)
status = -ENOMEM;
- else
+ else {
+ status = -EIO;
ntfs_error(vol->sb, "Cannot "
"perform write to "
"inode 0x%lx, "
@@ -1977,6 +1827,7 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
"is corrupt.",
vi->i_ino, (unsigned)
le32_to_cpu(ni->type));
+ }
break;
}
if (lcn == LCN_HOLE) {
@@ -1989,8 +1840,9 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
}
}
}
- if (bytes > count)
- bytes = count;
+ if (bytes > iov_iter_count(i))
+ bytes = iov_iter_count(i);
+again:
/*
* Bring in the user page(s) that we will copy from _first_.
* Otherwise there is a nasty deadlock on copying from the same
@@ -1999,10 +1851,10 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
* pages being swapped out between us bringing them into memory
* and doing the actual copying.
*/
- if (likely(nr_segs == 1))
- ntfs_fault_in_pages_readable(buf, bytes);
- else
- ntfs_fault_in_pages_readable_iovec(iov, iov_ofs, bytes);
+ if (unlikely(iov_iter_fault_in_multipages_readable(i, bytes))) {
+ status = -EFAULT;
+ break;
+ }
/* Get and lock @do_pages starting at index @start_idx. */
status = __ntfs_grab_cache_pages(mapping, start_idx, do_pages,
pages, &cached_page);
@@ -2018,56 +1870,57 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
status = ntfs_prepare_pages_for_non_resident_write(
pages, do_pages, pos, bytes);
if (unlikely(status)) {
- loff_t i_size;
-
do {
unlock_page(pages[--do_pages]);
page_cache_release(pages[do_pages]);
} while (do_pages);
- /*
- * The write preparation may have instantiated
- * allocated space outside i_size. Trim this
- * off again. We can ignore any errors in this
- * case as we will just be waisting a bit of
- * allocated space, which is not a disaster.
- */
- i_size = i_size_read(vi);
- if (pos + bytes > i_size) {
- ntfs_write_failed(mapping, pos + bytes);
- }
break;
}
}
u = (pos >> PAGE_CACHE_SHIFT) - pages[0]->index;
- if (likely(nr_segs == 1)) {
- copied = ntfs_copy_from_user(pages + u, do_pages - u,
- ofs, buf, bytes);
- buf += copied;
- } else
- copied = ntfs_copy_from_user_iovec(pages + u,
- do_pages - u, ofs, &iov, &iov_ofs,
- bytes);
+ copied = ntfs_copy_from_user_iter(pages + u, do_pages - u, ofs,
+ i, bytes);
ntfs_flush_dcache_pages(pages + u, do_pages - u);
- status = ntfs_commit_pages_after_write(pages, do_pages, pos,
- bytes);
- if (likely(!status)) {
- written += copied;
- count -= copied;
- pos += copied;
- if (unlikely(copied != bytes))
- status = -EFAULT;
+ status = 0;
+ if (likely(copied == bytes)) {
+ status = ntfs_commit_pages_after_write(pages, do_pages,
+ pos, bytes);
+ if (!status)
+ status = bytes;
}
do {
unlock_page(pages[--do_pages]);
page_cache_release(pages[do_pages]);
} while (do_pages);
- if (unlikely(status))
+ if (unlikely(status < 0))
break;
- balance_dirty_pages_ratelimited(mapping);
+ copied = status;
cond_resched();
- } while (count);
-err_out:
- *ppos = pos;
+ if (unlikely(!copied)) {
+ size_t sc;
+
+ /*
+ * We failed to copy anything. Fall back to single
+ * segment length write.
+ *
+ * This is needed to avoid possible livelock in the
+ * case that all segments in the iov cannot be copied
+ * at once without a pagefault.
+ */
+ sc = iov_iter_single_seg_count(i);
+ if (bytes > sc)
+ bytes = sc;
+ goto again;
+ }
+ iov_iter_advance(i, copied);
+ pos += copied;
+ written += copied;
+ balance_dirty_pages_ratelimited(mapping);
+ if (fatal_signal_pending(current)) {
+ status = -EINTR;
+ break;
+ }
+ } while (iov_iter_count(i));
if (cached_page)
page_cache_release(cached_page);
ntfs_debug("Done. Returning %s (written 0x%lx, status %li).",
@@ -2077,59 +1930,56 @@ err_out:
}
/**
- * ntfs_file_aio_write_nolock -
+ * ntfs_file_write_iter_nolock - write data to a file
+ * @iocb: IO state structure (file, offset, etc.)
+ * @from: iov_iter with data to write
+ *
+ * Basically the same as __generic_file_write_iter() except that it ends
+ * up calling ntfs_perform_write() instead of generic_perform_write() and that
+ * O_DIRECT is not implemented.
*/
-static ssize_t ntfs_file_aio_write_nolock(struct kiocb *iocb,
- const struct iovec *iov, unsigned long nr_segs, loff_t *ppos)
+static ssize_t ntfs_file_write_iter_nolock(struct kiocb *iocb,
+ struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
- struct address_space *mapping = file->f_mapping;
- struct inode *inode = mapping->host;
- loff_t pos;
- size_t count; /* after file limit checks */
- ssize_t written, err;
+ loff_t pos = iocb->ki_pos;
+ ssize_t written = 0;
+ ssize_t err;
+ size_t count = iov_iter_count(from);
- count = iov_length(iov, nr_segs);
- pos = *ppos;
- /* We can write back this queue in page reclaim. */
- current->backing_dev_info = inode_to_bdi(inode);
- written = 0;
- err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
- if (err)
- goto out;
- if (!count)
- goto out;
- err = file_remove_suid(file);
- if (err)
- goto out;
- err = file_update_time(file);
- if (err)
- goto out;
- written = ntfs_file_buffered_write(iocb, iov, nr_segs, pos, ppos,
- count);
-out:
+ err = ntfs_prepare_file_for_write(file, &pos, &count);
+ if (count && !err) {
+ iov_iter_truncate(from, count);
+ written = ntfs_perform_write(file, from, pos);
+ if (likely(written >= 0))
+ iocb->ki_pos = pos + written;
+ }
current->backing_dev_info = NULL;
return written ? written : err;
}
/**
- * ntfs_file_aio_write -
+ * ntfs_file_write_iter - simple wrapper for ntfs_file_write_iter_nolock()
+ * @iocb: IO state structure
+ * @from: iov_iter with data to write
+ *
+ * Basically the same as generic_file_write_iter() except that it ends up
+ * calling ntfs_file_write_iter_nolock() instead of
+ * __generic_file_write_iter().
*/
-static ssize_t ntfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+static ssize_t ntfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
- struct address_space *mapping = file->f_mapping;
- struct inode *inode = mapping->host;
+ struct inode *vi = file_inode(file);
ssize_t ret;
- BUG_ON(iocb->ki_pos != pos);
-
- mutex_lock(&inode->i_mutex);
- ret = ntfs_file_aio_write_nolock(iocb, iov, nr_segs, &iocb->ki_pos);
- mutex_unlock(&inode->i_mutex);
+ mutex_lock(&vi->i_mutex);
+ ret = ntfs_file_write_iter_nolock(iocb, from);
+ mutex_unlock(&vi->i_mutex);
if (ret > 0) {
- int err = generic_write_sync(file, iocb->ki_pos - ret, ret);
+ ssize_t err;
+
+ err = generic_write_sync(file, iocb->ki_pos - ret, ret);
if (err < 0)
ret = err;
}
@@ -2197,37 +2047,17 @@ static int ntfs_file_fsync(struct file *filp, loff_t start, loff_t end,
#endif /* NTFS_RW */
const struct file_operations ntfs_file_ops = {
- .llseek = generic_file_llseek, /* Seek inside file. */
- .read = new_sync_read, /* Read from file. */
- .read_iter = generic_file_read_iter, /* Async read from file. */
+ .llseek = generic_file_llseek,
+ .read = new_sync_read,
+ .read_iter = generic_file_read_iter,
#ifdef NTFS_RW
- .write = do_sync_write, /* Write to file. */
- .aio_write = ntfs_file_aio_write, /* Async write to file. */
- /*.release = ,*/ /* Last file is closed. See
- fs/ext2/file.c::
- ext2_release_file() for
- how to use this to discard
- preallocated space for
- write opened files. */
- .fsync = ntfs_file_fsync, /* Sync a file to disk. */
- /*.aio_fsync = ,*/ /* Sync all outstanding async
- i/o operations on a
- kiocb. */
+ .write = new_sync_write,
+ .write_iter = ntfs_file_write_iter,
+ .fsync = ntfs_file_fsync,
#endif /* NTFS_RW */
- /*.ioctl = ,*/ /* Perform function on the
- mounted filesystem. */
- .mmap = generic_file_mmap, /* Mmap file. */
- .open = ntfs_file_open, /* Open file. */
- .splice_read = generic_file_splice_read /* Zero-copy data send with
- the data source being on
- the ntfs partition. We do
- not need to care about the
- data destination. */
- /*.sendpage = ,*/ /* Zero-copy data send with
- the data destination being
- on the ntfs partition. We
- do not need to care about
- the data source. */
+ .mmap = generic_file_mmap,
+ .open = ntfs_file_open,
+ .splice_read = generic_file_splice_read,
};
const struct inode_operations ntfs_file_inode_ops = {
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index 898b9949d363..1d0c21df0d80 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -28,7 +28,6 @@
#include <linux/quotaops.h>
#include <linux/slab.h>
#include <linux/log2.h>
-#include <linux/aio.h>
#include "aops.h"
#include "attrib.h"
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 44db1808cdb5..e1bf18c5d25e 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -29,6 +29,7 @@
#include <linux/mpage.h>
#include <linux/quotaops.h>
#include <linux/blkdev.h>
+#include <linux/uio.h>
#include <cluster/masklog.h>
diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h
index 6cae155d54df..dd59599b022d 100644
--- a/fs/ocfs2/aops.h
+++ b/fs/ocfs2/aops.h
@@ -22,7 +22,7 @@
#ifndef OCFS2_AOPS_H
#define OCFS2_AOPS_H
-#include <linux/aio.h>
+#include <linux/fs.h>
handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
struct page *page,
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index ba1790e52ff2..91f03ce98108 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -2280,7 +2280,7 @@ static ssize_t ocfs2_file_write_iter(struct kiocb *iocb,
file->f_path.dentry->d_name.name,
(unsigned int)from->nr_segs); /* GRRRRR */
- if (iocb->ki_nbytes == 0)
+ if (count == 0)
return 0;
appending = file->f_flags & O_APPEND ? 1 : 0;
@@ -2330,8 +2330,7 @@ relock:
}
can_do_direct = direct_io;
- ret = ocfs2_prepare_inode_for_write(file, ppos,
- iocb->ki_nbytes, appending,
+ ret = ocfs2_prepare_inode_for_write(file, ppos, count, appending,
&can_do_direct, &has_refcount);
if (ret < 0) {
mlog_errno(ret);
@@ -2339,8 +2338,7 @@ relock:
}
if (direct_io && !is_sync_kiocb(iocb))
- unaligned_dio = ocfs2_is_io_unaligned(inode, iocb->ki_nbytes,
- *ppos);
+ unaligned_dio = ocfs2_is_io_unaligned(inode, count, *ppos);
/*
* We can't complete the direct I/O as requested, fall back to
diff --git a/fs/open.c b/fs/open.c
index 33f9cbf2610b..6a83c47d5904 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -570,6 +570,7 @@ static int chown_common(struct path *path, uid_t user, gid_t group)
uid = make_kuid(current_user_ns(), user);
gid = make_kgid(current_user_ns(), group);
+retry_deleg:
newattrs.ia_valid = ATTR_CTIME;
if (user != (uid_t) -1) {
if (!uid_valid(uid))
@@ -586,7 +587,6 @@ static int chown_common(struct path *path, uid_t user, gid_t group)
if (!S_ISDIR(inode->i_mode))
newattrs.ia_valid |=
ATTR_KILL_SUID | ATTR_KILL_SGID | ATTR_KILL_PRIV;
-retry_deleg:
mutex_lock(&inode->i_mutex);
error = security_path_chown(path, uid, gid);
if (!error)
@@ -988,9 +988,6 @@ struct file *file_open_root(struct dentry *dentry, struct vfsmount *mnt,
return ERR_PTR(err);
if (flags & O_CREAT)
return ERR_PTR(-EINVAL);
- if (!filename && (flags & O_DIRECTORY))
- if (!dentry->d_inode->i_op->lookup)
- return ERR_PTR(-ENOTDIR);
return do_file_open_root(dentry, mnt, filename, &op);
}
EXPORT_SYMBOL(file_open_root);
diff --git a/fs/pipe.c b/fs/pipe.c
index 21981e58e2a6..2d084f2d0b83 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -21,7 +21,6 @@
#include <linux/audit.h>
#include <linux/syscalls.h>
#include <linux/fcntl.h>
-#include <linux/aio.h>
#include <asm/uaccess.h>
#include <asm/ioctls.h>
diff --git a/fs/read_write.c b/fs/read_write.c
index 8e1b68786d66..69128b378646 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -9,7 +9,6 @@
#include <linux/fcntl.h>
#include <linux/file.h>
#include <linux/uio.h>
-#include <linux/aio.h>
#include <linux/fsnotify.h>
#include <linux/security.h>
#include <linux/export.h>
@@ -343,13 +342,10 @@ ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos)
init_sync_kiocb(&kiocb, file);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = iov_iter_count(iter);
iter->type |= READ;
ret = file->f_op->read_iter(&kiocb, iter);
- if (ret == -EIOCBQUEUED)
- ret = wait_on_sync_kiocb(&kiocb);
-
+ BUG_ON(ret == -EIOCBQUEUED);
if (ret > 0)
*ppos = kiocb.ki_pos;
return ret;
@@ -366,13 +362,10 @@ ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos)
init_sync_kiocb(&kiocb, file);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = iov_iter_count(iter);
iter->type |= WRITE;
ret = file->f_op->write_iter(&kiocb, iter);
- if (ret == -EIOCBQUEUED)
- ret = wait_on_sync_kiocb(&kiocb);
-
+ BUG_ON(ret == -EIOCBQUEUED);
if (ret > 0)
*ppos = kiocb.ki_pos;
return ret;
@@ -426,11 +419,9 @@ ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *pp
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
ret = filp->f_op->aio_read(&kiocb, &iov, 1, kiocb.ki_pos);
- if (-EIOCBQUEUED == ret)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
@@ -446,12 +437,10 @@ ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *p
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
iov_iter_init(&iter, READ, &iov, 1, len);
ret = filp->f_op->read_iter(&kiocb, &iter);
- if (-EIOCBQUEUED == ret)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
@@ -510,11 +499,9 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
ret = filp->f_op->aio_write(&kiocb, &iov, 1, kiocb.ki_pos);
- if (-EIOCBQUEUED == ret)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
@@ -530,12 +517,10 @@ ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, lo
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
iov_iter_init(&iter, WRITE, &iov, 1, len);
ret = filp->f_op->write_iter(&kiocb, &iter);
- if (-EIOCBQUEUED == ret)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
@@ -710,60 +695,47 @@ unsigned long iov_shorten(struct iovec *iov, unsigned long nr_segs, size_t to)
}
EXPORT_SYMBOL(iov_shorten);
-static ssize_t do_iter_readv_writev(struct file *filp, int rw, const struct iovec *iov,
- unsigned long nr_segs, size_t len, loff_t *ppos, iter_fn_t fn)
+static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter,
+ loff_t *ppos, iter_fn_t fn)
{
struct kiocb kiocb;
- struct iov_iter iter;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
- iov_iter_init(&iter, rw, iov, nr_segs, len);
- ret = fn(&kiocb, &iter);
- if (ret == -EIOCBQUEUED)
- ret = wait_on_sync_kiocb(&kiocb);
+ ret = fn(&kiocb, iter);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
-static ssize_t do_sync_readv_writev(struct file *filp, const struct iovec *iov,
- unsigned long nr_segs, size_t len, loff_t *ppos, iov_fn_t fn)
+static ssize_t do_sync_readv_writev(struct file *filp, struct iov_iter *iter,
+ loff_t *ppos, iov_fn_t fn)
{
struct kiocb kiocb;
ssize_t ret;
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
- ret = fn(&kiocb, iov, nr_segs, kiocb.ki_pos);
- if (ret == -EIOCBQUEUED)
- ret = wait_on_sync_kiocb(&kiocb);
+ ret = fn(&kiocb, iter->iov, iter->nr_segs, kiocb.ki_pos);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
/* Do it by hand, with file-ops */
-static ssize_t do_loop_readv_writev(struct file *filp, struct iovec *iov,
- unsigned long nr_segs, loff_t *ppos, io_fn_t fn)
+static ssize_t do_loop_readv_writev(struct file *filp, struct iov_iter *iter,
+ loff_t *ppos, io_fn_t fn)
{
- struct iovec *vector = iov;
ssize_t ret = 0;
- while (nr_segs > 0) {
- void __user *base;
- size_t len;
+ while (iov_iter_count(iter)) {
+ struct iovec iovec = iov_iter_iovec(iter);
ssize_t nr;
- base = vector->iov_base;
- len = vector->iov_len;
- vector++;
- nr_segs--;
-
- nr = fn(filp, base, len, ppos);
+ nr = fn(filp, iovec.iov_base, iovec.iov_len, ppos);
if (nr < 0) {
if (!ret)
@@ -771,8 +743,9 @@ static ssize_t do_loop_readv_writev(struct file *filp, struct iovec *iov,
break;
}
ret += nr;
- if (nr != len)
+ if (nr != iovec.iov_len)
break;
+ iov_iter_advance(iter, nr);
}
return ret;
@@ -863,17 +836,20 @@ static ssize_t do_readv_writev(int type, struct file *file,
size_t tot_len;
struct iovec iovstack[UIO_FASTIOV];
struct iovec *iov = iovstack;
+ struct iov_iter iter;
ssize_t ret;
io_fn_t fn;
iov_fn_t fnv;
iter_fn_t iter_fn;
- ret = rw_copy_check_uvector(type, uvector, nr_segs,
- ARRAY_SIZE(iovstack), iovstack, &iov);
- if (ret <= 0)
- goto out;
+ ret = import_iovec(type, uvector, nr_segs,
+ ARRAY_SIZE(iovstack), &iov, &iter);
+ if (ret < 0)
+ return ret;
- tot_len = ret;
+ tot_len = iov_iter_count(&iter);
+ if (!tot_len)
+ goto out;
ret = rw_verify_area(type, file, pos, tot_len);
if (ret < 0)
goto out;
@@ -891,20 +867,17 @@ static ssize_t do_readv_writev(int type, struct file *file,
}
if (iter_fn)
- ret = do_iter_readv_writev(file, type, iov, nr_segs, tot_len,
- pos, iter_fn);
+ ret = do_iter_readv_writev(file, &iter, pos, iter_fn);
else if (fnv)
- ret = do_sync_readv_writev(file, iov, nr_segs, tot_len,
- pos, fnv);
+ ret = do_sync_readv_writev(file, &iter, pos, fnv);
else
- ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn);
+ ret = do_loop_readv_writev(file, &iter, pos, fn);
if (type != READ)
file_end_write(file);
out:
- if (iov != iovstack)
- kfree(iov);
+ kfree(iov);
if ((ret + (type == READ)) > 0) {
if (type == READ)
fsnotify_access(file);
@@ -1043,17 +1016,20 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
compat_ssize_t tot_len;
struct iovec iovstack[UIO_FASTIOV];
struct iovec *iov = iovstack;
+ struct iov_iter iter;
ssize_t ret;
io_fn_t fn;
iov_fn_t fnv;
iter_fn_t iter_fn;
- ret = compat_rw_copy_check_uvector(type, uvector, nr_segs,
- UIO_FASTIOV, iovstack, &iov);
- if (ret <= 0)
- goto out;
+ ret = compat_import_iovec(type, uvector, nr_segs,
+ UIO_FASTIOV, &iov, &iter);
+ if (ret < 0)
+ return ret;
- tot_len = ret;
+ tot_len = iov_iter_count(&iter);
+ if (!tot_len)
+ goto out;
ret = rw_verify_area(type, file, pos, tot_len);
if (ret < 0)
goto out;
@@ -1071,20 +1047,17 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
}
if (iter_fn)
- ret = do_iter_readv_writev(file, type, iov, nr_segs, tot_len,
- pos, iter_fn);
+ ret = do_iter_readv_writev(file, &iter, pos, iter_fn);
else if (fnv)
- ret = do_sync_readv_writev(file, iov, nr_segs, tot_len,
- pos, fnv);
+ ret = do_sync_readv_writev(file, &iter, pos, fnv);
else
- ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn);
+ ret = do_loop_readv_writev(file, &iter, pos, fn);
if (type != READ)
file_end_write(file);
out:
- if (iov != iovstack)
- kfree(iov);
+ kfree(iov);
if ((ret + (type == READ)) > 0) {
if (type == READ)
fsnotify_access(file);
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index e72401e1f995..9312b7842e03 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -18,7 +18,7 @@
#include <linux/writeback.h>
#include <linux/quotaops.h>
#include <linux/swap.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
int reiserfs_commit_write(struct file *f, struct page *page,
unsigned from, unsigned to);
diff --git a/fs/splice.c b/fs/splice.c
index 7968da96bebb..41cbb16299e0 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -32,7 +32,6 @@
#include <linux/gfp.h>
#include <linux/socket.h>
#include <linux/compat.h>
-#include <linux/aio.h>
#include "internal.h"
/*
@@ -1534,34 +1533,29 @@ static long vmsplice_to_user(struct file *file, const struct iovec __user *uiov,
struct iovec iovstack[UIO_FASTIOV];
struct iovec *iov = iovstack;
struct iov_iter iter;
- ssize_t count;
pipe = get_pipe_info(file);
if (!pipe)
return -EBADF;
- ret = rw_copy_check_uvector(READ, uiov, nr_segs,
- ARRAY_SIZE(iovstack), iovstack, &iov);
- if (ret <= 0)
- goto out;
-
- count = ret;
- iov_iter_init(&iter, READ, iov, nr_segs, count);
+ ret = import_iovec(READ, uiov, nr_segs,
+ ARRAY_SIZE(iovstack), &iov, &iter);
+ if (ret < 0)
+ return ret;
+ sd.total_len = iov_iter_count(&iter);
sd.len = 0;
- sd.total_len = count;
sd.flags = flags;
sd.u.data = &iter;
sd.pos = 0;
- pipe_lock(pipe);
- ret = __splice_from_pipe(pipe, &sd, pipe_to_user);
- pipe_unlock(pipe);
-
-out:
- if (iov != iovstack)
- kfree(iov);
+ if (sd.total_len) {
+ pipe_lock(pipe);
+ ret = __splice_from_pipe(pipe, &sd, pipe_to_user);
+ pipe_unlock(pipe);
+ }
+ kfree(iov);
return ret;
}
diff --git a/fs/stat.c b/fs/stat.c
index ae0c3cef9927..19636af5e75c 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -66,7 +66,7 @@ int vfs_getattr(struct path *path, struct kstat *stat)
{
int retval;
- retval = security_inode_getattr(path->mnt, path->dentry);
+ retval = security_inode_getattr(path);
if (retval)
return retval;
return vfs_getattr_nosec(path, stat);
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index e627c0acf626..c3d15fe83403 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -50,7 +50,6 @@
*/
#include "ubifs.h"
-#include <linux/aio.h>
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/slab.h>
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 08f3555fbeac..7f885cc8b0b7 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -34,7 +34,7 @@
#include <linux/errno.h>
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "udf_i.h"
#include "udf_sb.h"
@@ -122,7 +122,7 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
int err, pos;
- size_t count = iocb->ki_nbytes;
+ size_t count = iov_iter_count(from);
struct udf_inode_info *iinfo = UDF_I(inode);
mutex_lock(&inode->i_mutex);
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index a445d599098d..9c1fbd23913d 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -38,7 +38,7 @@
#include <linux/slab.h>
#include <linux/crc-itu-t.h>
#include <linux/mpage.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "udf_i.h"
#include "udf_sb.h"
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 3a9b7a1b8704..4f8cdc59bc38 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -31,7 +31,6 @@
#include "xfs_bmap.h"
#include "xfs_bmap_util.h"
#include "xfs_bmap_btree.h"
-#include <linux/aio.h>
#include <linux/gfp.h>
#include <linux/mpage.h>
#include <linux/pagevec.h>
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index a2e1cb8a568b..f44212fae653 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -38,7 +38,6 @@
#include "xfs_icache.h"
#include "xfs_pnfs.h"
-#include <linux/aio.h>
#include <linux/dcache.h>
#include <linux/falloc.h>
#include <linux/pagevec.h>