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authorDavid Howells <dhowells@redhat.com>2007-05-11 09:22:19 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-11 19:29:32 +0400
commit9d577b6a31a53a19d3b0fe414d645a61ef201846 (patch)
tree3e2523ac386e16eb0b125f3933b9ebfbd03aed65
parent9393e1dc8e394bd59217178b26b2476dc43e8667 (diff)
downloadlinux-9d577b6a31a53a19d3b0fe414d645a61ef201846.tar.xz
AFS: fix interminable loop in afs_write_back_from_locked_page()
Following bug was uncovered by compiling with '-W' flag: CC [M] fs/afs/write.o fs/afs/write.c: In function ‘afs_write_back_from_locked_page’: fs/afs/write.c:398: warning: comparison of unsigned expression >= 0 is always true Loop variable 'n' is unsigned, so wraps around happily as far as I can see. Trival fix attached (compile tested only). Signed-off-by: Mika Kukkonen <mikukkon@iki.fi> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/afs/write.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 67ae4dbf66b3..28f37516c126 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -395,8 +395,9 @@ static int afs_write_back_from_locked_page(struct afs_writeback *wb,
if (n == 0)
goto no_more;
if (pages[0]->index != start) {
- for (n--; n >= 0; n--)
- put_page(pages[n]);
+ do {
+ put_page(pages[--n]);
+ } while (n > 0);
goto no_more;
}