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UBIFS: Add an assertion for clean_zn_cnt

Message ID 538D6FE7.80209@huawei.com
State Accepted
Headers show

Commit Message

hujianyang June 3, 2014, 6:49 a.m. UTC
This patch adds a new ubifs_assert() in ubifs_tnc_close() to check
if there are any leaks of per-filesystem @clean_zn_cnt. This new
assert inspects whether the return value of ubifs_destroy_tnc_subtree()
is equal to @clean_zn_cnt or not while umount.


Signed-off-by: hujianyang <hujianyang@huawei.com>
---
 fs/ubifs/tnc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Comments

Artem Bityutskiy June 3, 2014, 8:17 a.m. UTC | #1
On Tue, 2014-06-03 at 14:49 +0800, hujianyang wrote:
> This patch adds a new ubifs_assert() in ubifs_tnc_close() to check
> if there are any leaks of per-filesystem @clean_zn_cnt. This new
> assert inspects whether the return value of ubifs_destroy_tnc_subtree()
> is equal to @clean_zn_cnt or not while umount.

Pushed to linux-ubifs.git, thanks!
diff mbox

Patch

diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index 9083bc7..61914f0 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -2859,10 +2859,11 @@  void ubifs_tnc_close(struct ubifs_info *c)
 {
 	tnc_destroy_cnext(c);
 	if (c->zroot.znode) {
-		long n;
+		long n, freed;

-		ubifs_destroy_tnc_subtree(c->zroot.znode);
+		freed = ubifs_destroy_tnc_subtree(c->zroot.znode);
 		n = atomic_long_read(&c->clean_zn_cnt);
+		ubifs_assert(freed == n);
 		atomic_long_sub(n, &ubifs_clean_zn_cnt);
 	}
 	kfree(c->gap_lebs);