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authorSage Weil <sage@newdream.net>2012-01-03 10:09:07 -0800
committerSage Weil <sage@newdream.net>2012-01-10 08:57:02 -0800
commit2ff179e650e95c2b21841b21dc46dc2edefd04cd (patch)
tree9b15ba73039053111d73da96227e1589b3f11ff2 /fs/ceph/dir.c
parentee6b1baf67591b6d7ce1a6a07544343433d5ec9e (diff)
ceph: avoid iput() while holding spinlock in ceph_dir_fsync
ceph_mdsc_put_request() can call iput(), which can sleep. Don't do that. Fixes: #1812 Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/dir.c')
-rw-r--r--fs/ceph/dir.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index a421555b229..974ef1e4d26 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1218,6 +1218,7 @@ static int ceph_dir_fsync(struct file *file, loff_t start, loff_t end,
do {
ceph_mdsc_get_request(req);
spin_unlock(&ci->i_unsafe_lock);
+
dout("dir_fsync %p wait on tid %llu (until %llu)\n",
inode, req->r_tid, last_tid);
if (req->r_timeout) {
@@ -1230,9 +1231,9 @@ static int ceph_dir_fsync(struct file *file, loff_t start, loff_t end,
} else {
wait_for_completion(&req->r_safe_completion);
}
- spin_lock(&ci->i_unsafe_lock);
ceph_mdsc_put_request(req);
+ spin_lock(&ci->i_unsafe_lock);
if (ret || list_empty(head))
break;
req = list_entry(head->next,