summaryrefslogtreecommitdiff
path: root/fs
diff options
context:
space:
mode:
authorAl Viro <viro@zeniv.linux.org.uk>2022-06-09 10:28:36 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2022-08-08 22:37:22 -0400
commit1ef255e257173f4bc44317ef2076e7e0de688fdf (patch)
tree700be64ef5aa70a34f6d8158936214e9694e4245 /fs
parent3cf42da327f26eb4461864dd64812345b37f4fd9 (diff)
iov_iter: advancing variants of iov_iter_get_pages{,_alloc}()
Most of the users immediately follow successful iov_iter_get_pages() with advancing by the amount it had returned. Provide inline wrappers doing that, convert trivial open-coded uses of those. BTW, iov_iter_get_pages() never returns more than it had been asked to; such checks in cifs ought to be removed someday... Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/ceph/file.c3
-rw-r--r--fs/cifs/file.c6
-rw-r--r--fs/cifs/misc.c3
-rw-r--r--fs/direct-io.c3
-rw-r--r--fs/fuse/dev.c3
-rw-r--r--fs/fuse/file.c3
-rw-r--r--fs/nfs/direct.c6
7 files changed, 9 insertions, 18 deletions
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index c535de5852bf..8fab5db16c73 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -95,12 +95,11 @@ static ssize_t __iter_get_bvecs(struct iov_iter *iter, size_t maxsize,
size_t start;
int idx = 0;
- bytes = iov_iter_get_pages(iter, pages, maxsize - size,
+ bytes = iov_iter_get_pages2(iter, pages, maxsize - size,
ITER_GET_BVECS_PAGES, &start);
if (bytes < 0)
return size ?: bytes;
- iov_iter_advance(iter, bytes);
size += bytes;
for ( ; bytes; idx++, bvec_idx++) {
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index e1e05b253daa..3ba013e2987f 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -3022,7 +3022,7 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from,
if (ctx->direct_io) {
ssize_t result;
- result = iov_iter_get_pages_alloc(
+ result = iov_iter_get_pages_alloc2(
from, &pagevec, cur_len, &start);
if (result < 0) {
cifs_dbg(VFS,
@@ -3036,7 +3036,6 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from,
break;
}
cur_len = (size_t)result;
- iov_iter_advance(from, cur_len);
nr_pages =
(cur_len + start + PAGE_SIZE - 1) / PAGE_SIZE;
@@ -3758,7 +3757,7 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file,
if (ctx->direct_io) {
ssize_t result;
- result = iov_iter_get_pages_alloc(
+ result = iov_iter_get_pages_alloc2(
&direct_iov, &pagevec,
cur_len, &start);
if (result < 0) {
@@ -3774,7 +3773,6 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file,
break;
}
cur_len = (size_t)result;
- iov_iter_advance(&direct_iov, cur_len);
rdata = cifs_readdata_direct_alloc(
pagevec, cifs_uncached_readv_complete);
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 0e84e6fcf8ab..f833953bab61 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -1029,7 +1029,7 @@ setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw)
saved_len = count;
while (count && npages < max_pages) {
- rc = iov_iter_get_pages(iter, pages, count, max_pages, &start);
+ rc = iov_iter_get_pages2(iter, pages, count, max_pages, &start);
if (rc < 0) {
cifs_dbg(VFS, "Couldn't get user pages (rc=%zd)\n", rc);
break;
@@ -1041,7 +1041,6 @@ setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw)
break;
}
- iov_iter_advance(iter, rc);
count -= rc;
rc += start;
cur_npages = DIV_ROUND_UP(rc, PAGE_SIZE);
diff --git a/fs/direct-io.c b/fs/direct-io.c
index c7fc01c2d509..f669163d5860 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -169,7 +169,7 @@ static inline int dio_refill_pages(struct dio *dio, struct dio_submit *sdio)
const enum req_op dio_op = dio->opf & REQ_OP_MASK;
ssize_t ret;
- ret = iov_iter_get_pages(sdio->iter, dio->pages, LONG_MAX, DIO_PAGES,
+ ret = iov_iter_get_pages2(sdio->iter, dio->pages, LONG_MAX, DIO_PAGES,
&sdio->from);
if (ret < 0 && sdio->blocks_available && dio_op == REQ_OP_WRITE) {
@@ -191,7 +191,6 @@ static inline int dio_refill_pages(struct dio *dio, struct dio_submit *sdio)
}
if (ret >= 0) {
- iov_iter_advance(sdio->iter, ret);
ret += sdio->from;
sdio->head = 0;
sdio->tail = (ret + PAGE_SIZE - 1) / PAGE_SIZE;
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 8d657c2cd6f7..51897427a534 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -730,14 +730,13 @@ static int fuse_copy_fill(struct fuse_copy_state *cs)
}
} else {
size_t off;
- err = iov_iter_get_pages(cs->iter, &page, PAGE_SIZE, 1, &off);
+ err = iov_iter_get_pages2(cs->iter, &page, PAGE_SIZE, 1, &off);
if (err < 0)
return err;
BUG_ON(!err);
cs->len = err;
cs->offset = off;
cs->pg = page;
- iov_iter_advance(cs->iter, err);
}
return lock_request(cs->req);
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index c982e3afe3b4..69e19fc0afc1 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1401,14 +1401,13 @@ static int fuse_get_user_pages(struct fuse_args_pages *ap, struct iov_iter *ii,
while (nbytes < *nbytesp && ap->num_pages < max_pages) {
unsigned npages;
size_t start;
- ret = iov_iter_get_pages(ii, &ap->pages[ap->num_pages],
+ ret = iov_iter_get_pages2(ii, &ap->pages[ap->num_pages],
*nbytesp - nbytes,
max_pages - ap->num_pages,
&start);
if (ret < 0)
break;
- iov_iter_advance(ii, ret);
nbytes += ret;
ret += start;
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 022e1ce63e62..c275c83f0aef 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -364,13 +364,12 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
size_t pgbase;
unsigned npages, i;
- result = iov_iter_get_pages_alloc(iter, &pagevec,
+ result = iov_iter_get_pages_alloc2(iter, &pagevec,
rsize, &pgbase);
if (result < 0)
break;
bytes = result;
- iov_iter_advance(iter, bytes);
npages = (result + pgbase + PAGE_SIZE - 1) / PAGE_SIZE;
for (i = 0; i < npages; i++) {
struct nfs_page *req;
@@ -812,13 +811,12 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
size_t pgbase;
unsigned npages, i;
- result = iov_iter_get_pages_alloc(iter, &pagevec,
+ result = iov_iter_get_pages_alloc2(iter, &pagevec,
wsize, &pgbase);
if (result < 0)
break;
bytes = result;
- iov_iter_advance(iter, bytes);
npages = (result + pgbase + PAGE_SIZE - 1) / PAGE_SIZE;
for (i = 0; i < npages; i++) {
struct nfs_page *req;