diff mbox series

ubifs: Add comment on c->commit_sem

Message ID 20180813131445.5656-1-richard@nod.at
State Accepted
Headers show
Series ubifs: Add comment on c->commit_sem | expand

Commit Message

Richard Weinberger Aug. 13, 2018, 1:14 p.m. UTC 
Every single time I come across that code, I get confused
because it looks like a possible dead lock.
Help myself by adding a comment.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 fs/ubifs/journal.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index 95665eba2b70..c913f36d6c21 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -328,6 +328,7 @@  again:
 	down_read(&c->commit_sem);
 	err = reserve_space(c, jhead, len);
 	if (!err)
+		/* c->commit_sem will get released via finish_reservation(). */
 		return 0;
 	up_read(&c->commit_sem);