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-rw-r--r--fs/ceph/caps.c9
-rw-r--r--fs/ceph/inode.c9
-rw-r--r--fs/ceph/locks.c177
-rw-r--r--fs/ceph/mds_client.c96
-rw-r--r--fs/ceph/super.c5
-rw-r--r--fs/ceph/super.h4
6 files changed, 206 insertions, 94 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index ff5d32cf9578..a14b2c974c9e 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -1160,7 +1160,7 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
struct ceph_inode_info *ci = cap->ci;
struct inode *inode = &ci->vfs_inode;
struct cap_msg_args arg;
- int held, revoking, dropping;
+ int held, revoking;
int wake = 0;
int delayed = 0;
int ret;
@@ -1168,7 +1168,6 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
held = cap->issued | cap->implemented;
revoking = cap->implemented & ~cap->issued;
retain &= ~revoking;
- dropping = cap->issued & ~retain;
dout("__send_cap %p cap %p session %p %s -> %s (revoking %s)\n",
inode, cap, cap->session,
@@ -1712,7 +1711,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
/* if we are unmounting, flush any unused caps immediately. */
if (mdsc->stopping)
- is_delayed = 1;
+ is_delayed = true;
spin_lock(&ci->i_ceph_lock);
@@ -3189,8 +3188,8 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid,
int dirty = le32_to_cpu(m->dirty);
int cleaned = 0;
bool drop = false;
- bool wake_ci = 0;
- bool wake_mdsc = 0;
+ bool wake_ci = false;
+ bool wake_mdsc = false;
list_for_each_entry_safe(cf, tmp_cf, &ci->i_cap_flush_list, i_list) {
if (cf->tid == flush_tid)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index f2550a076edc..ab81652198c4 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -493,6 +493,7 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
ci->i_wb_ref = 0;
ci->i_wrbuffer_ref = 0;
ci->i_wrbuffer_ref_head = 0;
+ atomic_set(&ci->i_filelock_ref, 0);
ci->i_shared_gen = 0;
ci->i_rdcache_gen = 0;
ci->i_rdcache_revoking = 0;
@@ -786,7 +787,6 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
/* update inode */
ci->i_version = le64_to_cpu(info->version);
- inode->i_version++;
inode->i_rdev = le32_to_cpu(info->rdev);
inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
@@ -1185,6 +1185,7 @@ retry_lookup:
ceph_snap(d_inode(dn)) != tvino.snap)) {
dout(" dn %p points to wrong inode %p\n",
dn, d_inode(dn));
+ ceph_dir_clear_ordered(dir);
d_delete(dn);
dput(dn);
goto retry_lookup;
@@ -1322,6 +1323,7 @@ retry_lookup:
dout(" %p links to %p %llx.%llx, not %llx.%llx\n",
dn, d_inode(dn), ceph_vinop(d_inode(dn)),
ceph_vinop(in));
+ ceph_dir_clear_ordered(dir);
d_invalidate(dn);
have_lease = false;
}
@@ -1573,6 +1575,7 @@ retry_lookup:
ceph_snap(d_inode(dn)) != tvino.snap)) {
dout(" dn %p points to wrong inode %p\n",
dn, d_inode(dn));
+ __ceph_dir_clear_ordered(ci);
d_delete(dn);
dput(dn);
goto retry_lookup;
@@ -1597,7 +1600,9 @@ retry_lookup:
&req->r_caps_reservation);
if (ret < 0) {
pr_err("fill_inode badness on %p\n", in);
- if (d_really_is_negative(dn))
+ if (d_really_is_positive(dn))
+ __ceph_dir_clear_ordered(ci);
+ else
iput(in);
d_drop(dn);
err = ret;
diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c
index e7cce412f2cf..9e66f69ee8a5 100644
--- a/fs/ceph/locks.c
+++ b/fs/ceph/locks.c
@@ -30,19 +30,52 @@ void __init ceph_flock_init(void)
get_random_bytes(&lock_secret, sizeof(lock_secret));
}
+static void ceph_fl_copy_lock(struct file_lock *dst, struct file_lock *src)
+{
+ struct inode *inode = file_inode(src->fl_file);
+ atomic_inc(&ceph_inode(inode)->i_filelock_ref);
+}
+
+static void ceph_fl_release_lock(struct file_lock *fl)
+{
+ struct inode *inode = file_inode(fl->fl_file);
+ struct ceph_inode_info *ci = ceph_inode(inode);
+ if (atomic_dec_and_test(&ci->i_filelock_ref)) {
+ /* clear error when all locks are released */
+ spin_lock(&ci->i_ceph_lock);
+ ci->i_ceph_flags &= ~CEPH_I_ERROR_FILELOCK;
+ spin_unlock(&ci->i_ceph_lock);
+ }
+}
+
+static const struct file_lock_operations ceph_fl_lock_ops = {
+ .fl_copy_lock = ceph_fl_copy_lock,
+ .fl_release_private = ceph_fl_release_lock,
+};
+
/**
* Implement fcntl and flock locking functions.
*/
-static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file,
+static int ceph_lock_message(u8 lock_type, u16 operation, struct inode *inode,
int cmd, u8 wait, struct file_lock *fl)
{
- struct inode *inode = file_inode(file);
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
struct ceph_mds_request *req;
int err;
u64 length = 0;
u64 owner;
+ if (operation == CEPH_MDS_OP_SETFILELOCK) {
+ /*
+ * increasing i_filelock_ref closes race window between
+ * handling request reply and adding file_lock struct to
+ * inode. Otherwise, auth caps may get trimmed in the
+ * window. Caller function will decrease the counter.
+ */
+ fl->fl_ops = &ceph_fl_lock_ops;
+ atomic_inc(&ceph_inode(inode)->i_filelock_ref);
+ }
+
if (operation != CEPH_MDS_OP_SETFILELOCK || cmd == CEPH_LOCK_UNLOCK)
wait = 0;
@@ -180,10 +213,12 @@ static int ceph_lock_wait_for_completion(struct ceph_mds_client *mdsc,
*/
int ceph_lock(struct file *file, int cmd, struct file_lock *fl)
{
- u8 lock_cmd;
- int err;
- u8 wait = 0;
+ struct inode *inode = file_inode(file);
+ struct ceph_inode_info *ci = ceph_inode(inode);
+ int err = 0;
u16 op = CEPH_MDS_OP_SETFILELOCK;
+ u8 wait = 0;
+ u8 lock_cmd;
if (!(fl->fl_flags & FL_POSIX))
return -ENOLCK;
@@ -199,6 +234,26 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl)
else if (IS_SETLKW(cmd))
wait = 1;
+ spin_lock(&ci->i_ceph_lock);
+ if (ci->i_ceph_flags & CEPH_I_ERROR_FILELOCK) {
+ err = -EIO;
+ } else if (op == CEPH_MDS_OP_SETFILELOCK) {
+ /*
+ * increasing i_filelock_ref closes race window between
+ * handling request reply and adding file_lock struct to
+ * inode. Otherwise, i_auth_cap may get trimmed in the
+ * window. Caller function will decrease the counter.
+ */
+ fl->fl_ops = &ceph_fl_lock_ops;
+ atomic_inc(&ci->i_filelock_ref);
+ }
+ spin_unlock(&ci->i_ceph_lock);
+ if (err < 0) {
+ if (op == CEPH_MDS_OP_SETFILELOCK && F_UNLCK == fl->fl_type)
+ posix_lock_file(file, fl, NULL);
+ return err;
+ }
+
if (F_RDLCK == fl->fl_type)
lock_cmd = CEPH_LOCK_SHARED;
else if (F_WRLCK == fl->fl_type)
@@ -206,16 +261,16 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl)
else
lock_cmd = CEPH_LOCK_UNLOCK;
- err = ceph_lock_message(CEPH_LOCK_FCNTL, op, file, lock_cmd, wait, fl);
+ err = ceph_lock_message(CEPH_LOCK_FCNTL, op, inode, lock_cmd, wait, fl);
if (!err) {
- if (op != CEPH_MDS_OP_GETFILELOCK) {
+ if (op == CEPH_MDS_OP_SETFILELOCK) {
dout("mds locked, locking locally");
err = posix_lock_file(file, fl, NULL);
- if (err && (CEPH_MDS_OP_SETFILELOCK == op)) {
+ if (err) {
/* undo! This should only happen if
* the kernel detects local
* deadlock. */
- ceph_lock_message(CEPH_LOCK_FCNTL, op, file,
+ ceph_lock_message(CEPH_LOCK_FCNTL, op, inode,
CEPH_LOCK_UNLOCK, 0, fl);
dout("got %d on posix_lock_file, undid lock",
err);
@@ -227,9 +282,11 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl)
int ceph_flock(struct file *file, int cmd, struct file_lock *fl)
{
- u8 lock_cmd;
- int err;
+ struct inode *inode = file_inode(file);
+ struct ceph_inode_info *ci = ceph_inode(inode);
+ int err = 0;
u8 wait = 0;
+ u8 lock_cmd;
if (!(fl->fl_flags & FL_FLOCK))
return -ENOLCK;
@@ -239,6 +296,21 @@ int ceph_flock(struct file *file, int cmd, struct file_lock *fl)
dout("ceph_flock, fl_file: %p", fl->fl_file);
+ spin_lock(&ci->i_ceph_lock);
+ if (ci->i_ceph_flags & CEPH_I_ERROR_FILELOCK) {
+ err = -EIO;
+ } else {
+ /* see comment in ceph_lock */
+ fl->fl_ops = &ceph_fl_lock_ops;
+ atomic_inc(&ci->i_filelock_ref);
+ }
+ spin_unlock(&ci->i_ceph_lock);
+ if (err < 0) {
+ if (F_UNLCK == fl->fl_type)
+ locks_lock_file_wait(file, fl);
+ return err;
+ }
+
if (IS_SETLKW(cmd))
wait = 1;
@@ -250,13 +322,13 @@ int ceph_flock(struct file *file, int cmd, struct file_lock *fl)
lock_cmd = CEPH_LOCK_UNLOCK;
err = ceph_lock_message(CEPH_LOCK_FLOCK, CEPH_MDS_OP_SETFILELOCK,
- file, lock_cmd, wait, fl);
+ inode, lock_cmd, wait, fl);
if (!err) {
err = locks_lock_file_wait(file, fl);
if (err) {
ceph_lock_message(CEPH_LOCK_FLOCK,
CEPH_MDS_OP_SETFILELOCK,
- file, CEPH_LOCK_UNLOCK, 0, fl);
+ inode, CEPH_LOCK_UNLOCK, 0, fl);
dout("got %d on locks_lock_file_wait, undid lock", err);
}
}
@@ -288,6 +360,37 @@ void ceph_count_locks(struct inode *inode, int *fcntl_count, int *flock_count)
*flock_count, *fcntl_count);
}
+/*
+ * Given a pointer to a lock, convert it to a ceph filelock
+ */
+static int lock_to_ceph_filelock(struct file_lock *lock,
+ struct ceph_filelock *cephlock)
+{
+ int err = 0;
+ cephlock->start = cpu_to_le64(lock->fl_start);
+ cephlock->length = cpu_to_le64(lock->fl_end - lock->fl_start + 1);
+ cephlock->client = cpu_to_le64(0);
+ cephlock->pid = cpu_to_le64((u64)lock->fl_pid);
+ cephlock->owner = cpu_to_le64(secure_addr(lock->fl_owner));
+
+ switch (lock->fl_type) {
+ case F_RDLCK:
+ cephlock->type = CEPH_LOCK_SHARED;
+ break;
+ case F_WRLCK:
+ cephlock->type = CEPH_LOCK_EXCL;
+ break;
+ case F_UNLCK:
+ cephlock->type = CEPH_LOCK_UNLOCK;
+ break;
+ default:
+ dout("Have unknown lock type %d", lock->fl_type);
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
/**
* Encode the flock and fcntl locks for the given inode into the ceph_filelock
* array. Must be called with inode->i_lock already held.
@@ -356,50 +459,22 @@ int ceph_locks_to_pagelist(struct ceph_filelock *flocks,
if (err)
goto out_fail;
- err = ceph_pagelist_append(pagelist, flocks,
- num_fcntl_locks * sizeof(*flocks));
- if (err)
- goto out_fail;
+ if (num_fcntl_locks > 0) {
+ err = ceph_pagelist_append(pagelist, flocks,
+ num_fcntl_locks * sizeof(*flocks));
+ if (err)
+ goto out_fail;
+ }
nlocks = cpu_to_le32(num_flock_locks);
err = ceph_pagelist_append(pagelist, &nlocks, sizeof(nlocks));
if (err)
goto out_fail;
- err = ceph_pagelist_append(pagelist,
- &flocks[num_fcntl_locks],
- num_flock_locks * sizeof(*flocks));
-out_fail:
- return err;
-}
-
-/*
- * Given a pointer to a lock, convert it to a ceph filelock
- */
-int lock_to_ceph_filelock(struct file_lock *lock,
- struct ceph_filelock *cephlock)
-{
- int err = 0;
- cephlock->start = cpu_to_le64(lock->fl_start);
- cephlock->length = cpu_to_le64(lock->fl_end - lock->fl_start + 1);
- cephlock->client = cpu_to_le64(0);
- cephlock->pid = cpu_to_le64((u64)lock->fl_pid);
- cephlock->owner = cpu_to_le64(secure_addr(lock->fl_owner));
-
- switch (lock->fl_type) {
- case F_RDLCK:
- cephlock->type = CEPH_LOCK_SHARED;
- break;
- case F_WRLCK:
- cephlock->type = CEPH_LOCK_EXCL;
- break;
- case F_UNLCK:
- cephlock->type = CEPH_LOCK_UNLOCK;
- break;
- default:
- dout("Have unknown lock type %d", lock->fl_type);
- err = -EINVAL;
+ if (num_flock_locks > 0) {
+ err = ceph_pagelist_append(pagelist, &flocks[num_fcntl_locks],
+ num_flock_locks * sizeof(*flocks));
}
-
+out_fail:
return err;
}
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 0687ab3c3267..ab69dcb70e8a 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1039,22 +1039,23 @@ void ceph_mdsc_open_export_target_sessions(struct ceph_mds_client *mdsc,
* session caps
*/
-/* caller holds s_cap_lock, we drop it */
-static void cleanup_cap_releases(struct ceph_mds_client *mdsc,
- struct ceph_mds_session *session)
- __releases(session->s_cap_lock)
+static void detach_cap_releases(struct ceph_mds_session *session,
+ struct list_head *target)
{
- LIST_HEAD(tmp_list);
- list_splice_init(&session->s_cap_releases, &tmp_list);
+ lockdep_assert_held(&session->s_cap_lock);
+
+ list_splice_init(&session->s_cap_releases, target);
session->s_num_cap_releases = 0;
- spin_unlock(&session->s_cap_lock);
+ dout("dispose_cap_releases mds%d\n", session->s_mds);
+}
- dout("cleanup_cap_releases mds%d\n", session->s_mds);
- while (!list_empty(&tmp_list)) {
+static void dispose_cap_releases(struct ceph_mds_client *mdsc,
+ struct list_head *dispose)
+{
+ while (!list_empty(dispose)) {
struct ceph_cap *cap;
/* zero out the in-progress message */
- cap = list_first_entry(&tmp_list,
- struct ceph_cap, session_caps);
+ cap = list_first_entry(dispose, struct ceph_cap, session_caps);
list_del(&cap->session_caps);
ceph_put_cap(mdsc, cap);
}
@@ -1215,6 +1216,13 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
}
spin_unlock(&mdsc->cap_dirty_lock);
+ if (atomic_read(&ci->i_filelock_ref) > 0) {
+ /* make further file lock syscall return -EIO */
+ ci->i_ceph_flags |= CEPH_I_ERROR_FILELOCK;
+ pr_warn_ratelimited(" dropping file locks for %p %lld\n",
+ inode, ceph_ino(inode));
+ }
+
if (!ci->i_dirty_caps && ci->i_prealloc_cap_flush) {
list_add(&ci->i_prealloc_cap_flush->i_list, &to_remove);
ci->i_prealloc_cap_flush = NULL;
@@ -1244,6 +1252,8 @@ static void remove_session_caps(struct ceph_mds_session *session)
{
struct ceph_fs_client *fsc = session->s_mdsc->fsc;
struct super_block *sb = fsc->sb;
+ LIST_HEAD(dispose);
+
dout("remove_session_caps on %p\n", session);
iterate_session_caps(session, remove_session_caps_cb, fsc);
@@ -1278,10 +1288,12 @@ static void remove_session_caps(struct ceph_mds_session *session)
}
// drop cap expires and unlock s_cap_lock
- cleanup_cap_releases(session->s_mdsc, session);
+ detach_cap_releases(session, &dispose);
BUG_ON(session->s_nr_caps > 0);
BUG_ON(!list_empty(&session->s_cap_flushing));
+ spin_unlock(&session->s_cap_lock);
+ dispose_cap_releases(session->s_mdsc, &dispose);
}
/*
@@ -1462,6 +1474,11 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg)
goto out;
if ((used | wanted) & CEPH_CAP_ANY_WR)
goto out;
+ /* Note: it's possible that i_filelock_ref becomes non-zero
+ * after dropping auth caps. It doesn't hurt because reply
+ * of lock mds request will re-add auth caps. */
+ if (atomic_read(&ci->i_filelock_ref) > 0)
+ goto out;
}
/* The inode has cached pages, but it's no longer used.
* we can safely drop it */
@@ -2827,7 +2844,7 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
struct ceph_mds_cap_reconnect v2;
struct ceph_mds_cap_reconnect_v1 v1;
} rec;
- struct ceph_inode_info *ci;
+ struct ceph_inode_info *ci = cap->ci;
struct ceph_reconnect_state *recon_state = arg;
struct ceph_pagelist *pagelist = recon_state->pagelist;
char *path;
@@ -2836,8 +2853,6 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
u64 snap_follows;
struct dentry *dentry;
- ci = cap->ci;
-
dout(" adding %p ino %llx.%llx cap %p %lld %s\n",
inode, ceph_vinop(inode), cap, cap->cap_id,
ceph_cap_string(cap->issued));
@@ -2870,7 +2885,8 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
rec.v2.issued = cpu_to_le32(cap->issued);
rec.v2.snaprealm = cpu_to_le64(ci->i_snap_realm->ino);
rec.v2.pathbase = cpu_to_le64(pathbase);
- rec.v2.flock_len = 0;
+ rec.v2.flock_len = (__force __le32)
+ ((ci->i_ceph_flags & CEPH_I_ERROR_FILELOCK) ? 0 : 1);
} else {
rec.v1.cap_id = cpu_to_le64(cap->cap_id);
rec.v1.wanted = cpu_to_le32(__ceph_caps_wanted(ci));
@@ -2894,26 +2910,37 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
if (recon_state->msg_version >= 2) {
int num_fcntl_locks, num_flock_locks;
- struct ceph_filelock *flocks;
+ struct ceph_filelock *flocks = NULL;
size_t struct_len, total_len = 0;
u8 struct_v = 0;
encode_again:
- ceph_count_locks(inode, &num_fcntl_locks, &num_flock_locks);
- flocks = kmalloc((num_fcntl_locks+num_flock_locks) *
- sizeof(struct ceph_filelock), GFP_NOFS);
- if (!flocks) {
- err = -ENOMEM;
- goto out_free;
+ if (rec.v2.flock_len) {
+ ceph_count_locks(inode, &num_fcntl_locks, &num_flock_locks);
+ } else {
+ num_fcntl_locks = 0;
+ num_flock_locks = 0;
}
- err = ceph_encode_locks_to_buffer(inode, flocks,
- num_fcntl_locks,
- num_flock_locks);
- if (err) {
+ if (num_fcntl_locks + num_flock_locks > 0) {
+ flocks = kmalloc((num_fcntl_locks + num_flock_locks) *
+ sizeof(struct ceph_filelock), GFP_NOFS);
+ if (!flocks) {
+ err = -ENOMEM;
+ goto out_free;
+ }
+ err = ceph_encode_locks_to_buffer(inode, flocks,
+ num_fcntl_locks,
+ num_flock_locks);
+ if (err) {
+ kfree(flocks);
+ flocks = NULL;
+ if (err == -ENOSPC)
+ goto encode_again;
+ goto out_free;
+ }
+ } else {
kfree(flocks);
- if (err == -ENOSPC)
- goto encode_again;
- goto out_free;
+ flocks = NULL;
}
if (recon_state->msg_version >= 3) {
@@ -2993,6 +3020,7 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc,
int s_nr_caps;
struct ceph_pagelist *pagelist;
struct ceph_reconnect_state recon_state;
+ LIST_HEAD(dispose);
pr_info("mds%d reconnect start\n", mds);
@@ -3026,7 +3054,9 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc,
*/
session->s_cap_reconnect = 1;
/* drop old cap expires; we're about to reestablish that state */
- cleanup_cap_releases(mdsc, session);
+ detach_cap_releases(session, &dispose);
+ spin_unlock(&session->s_cap_lock);
+ dispose_cap_releases(mdsc, &dispose);
/* trim unused caps to reduce MDS's cache rejoin time */
if (mdsc->fsc->sb->s_root)
@@ -3857,14 +3887,14 @@ void ceph_mdsc_handle_fsmap(struct ceph_mds_client *mdsc, struct ceph_msg *msg)
goto err_out;
}
return;
+
bad:
pr_err("error decoding fsmap\n");
err_out:
mutex_lock(&mdsc->mutex);
- mdsc->mdsmap_err = -ENOENT;
+ mdsc->mdsmap_err = err;
__wake_requests(mdsc, &mdsc->waiting_for_map);
mutex_unlock(&mdsc->mutex);
- return;
}
/*
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index e4082afedcb1..fe9fbb3f13f7 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -84,8 +84,9 @@ static int ceph_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_ffree = -1;
buf->f_namelen = NAME_MAX;
- /* leave fsid little-endian, regardless of host endianness */
- fsid = *(u64 *)(&monmap->fsid) ^ *((u64 *)&monmap->fsid + 1);
+ /* Must convert the fsid, for consistent values across arches */
+ fsid = le64_to_cpu(*(__le64 *)(&monmap->fsid)) ^
+ le64_to_cpu(*((__le64 *)&monmap->fsid + 1));
buf->f_fsid.val[0] = fsid & 0xffffffff;
buf->f_fsid.val[1] = fsid >> 32;
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 3e27a28aa44a..2beeec07fa76 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -352,6 +352,7 @@ struct ceph_inode_info {
int i_pin_ref;
int i_rd_ref, i_rdcache_ref, i_wr_ref, i_wb_ref;
int i_wrbuffer_ref, i_wrbuffer_ref_head;
+ atomic_t i_filelock_ref;
u32 i_shared_gen; /* increment each time we get FILE_SHARED */
u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */
u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */
@@ -487,6 +488,8 @@ static inline struct inode *ceph_find_inode(struct super_block *sb,
#define CEPH_I_KICK_FLUSH (1 << 9) /* kick flushing caps */
#define CEPH_I_FLUSH_SNAPS (1 << 10) /* need flush snapss */
#define CEPH_I_ERROR_WRITE (1 << 11) /* have seen write errors */
+#define CEPH_I_ERROR_FILELOCK (1 << 12) /* have seen file lock errors */
+
/*
* We set the ERROR_WRITE bit when we start seeing write errors on an inode
@@ -1011,7 +1014,6 @@ extern int ceph_encode_locks_to_buffer(struct inode *inode,
extern int ceph_locks_to_pagelist(struct ceph_filelock *flocks,
struct ceph_pagelist *pagelist,
int num_fcntl_locks, int num_flock_locks);
-extern int lock_to_ceph_filelock(struct file_lock *fl, struct ceph_filelock *c);
/* debugfs.c */
extern int ceph_fs_debugfs_init(struct ceph_fs_client *client);