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authorOleg Drokin <Oleg.Drokin@Sun.COM>2007-11-29 22:02:21 +0300
committerJ. Bruce Fields <bfields@citi.umich.edu>2008-02-02 00:42:06 +0300
commit29dbf546159f5701e11de26fa2da5c4a962e0f83 (patch)
tree1dcdd1785445cbbf30a159a15b7b1d77f42c51c2 /fs/lockd/svclock.c
parent406a7ea97d9dc1a9348ba92c4cd0e7c678185c4c (diff)
downloadlinux-29dbf546159f5701e11de26fa2da5c4a962e0f83.tar.xz
lockd: fix a leak in nlmsvc_testlock asynchronous request handling
Without the patch, there is a leakage of nlmblock structure refcount that holds a reference nlmfile structure, that holds a reference to struct file, when async GETFL is used (-EINPROGRESS return from file_ops->lock()), and also in some error cases. Fix up a style nit while we're here. Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/lockd/svclock.c')
-rw-r--r--fs/lockd/svclock.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index d120ec39bcb0..84c4d5e04ebb 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -501,25 +501,29 @@ nlmsvc_testlock(struct svc_rqst *rqstp, struct nlm_file *file,
block, block->b_flags, block->b_fl);
if (block->b_flags & B_TIMED_OUT) {
nlmsvc_unlink_block(block);
- return nlm_lck_denied;
+ ret = nlm_lck_denied;
+ goto out;
}
if (block->b_flags & B_GOT_CALLBACK) {
if (block->b_fl != NULL
&& block->b_fl->fl_type != F_UNLCK) {
lock->fl = *block->b_fl;
goto conf_lock;
- }
- else {
+ } else {
nlmsvc_unlink_block(block);
- return nlm_granted;
+ ret = nlm_granted;
+ goto out;
}
}
- return nlm_drop_reply;
+ ret = nlm_drop_reply;
+ goto out;
}
error = vfs_test_lock(file->f_file, &lock->fl);
- if (error == -EINPROGRESS)
- return nlmsvc_defer_lock_rqst(rqstp, block);
+ if (error == -EINPROGRESS) {
+ ret = nlmsvc_defer_lock_rqst(rqstp, block);
+ goto out;
+ }
if (error) {
ret = nlm_lck_denied_nolocks;
goto out;