The patch titled
vfs: check bh->b_blocknr only if BH_Mapped is set
has been removed from the -mm tree. Its filename was
vfs-check-bh-b_blocknr-only-if-bh_mapped-is-set.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: vfs: check bh->b_blocknr only if BH_Mapped is set
From: Nikanth Karthikesan <knikanth@xxxxxxx>
Check bh->b_blocknr only if BH_Mapped is set.
akpm: I doubt if b_blocknr is ever uninitialised here, but it could
conceivably cause a problem if we're doing a lookup for block zero.
Signed-off-by: Nikanth Karthikesan <knikanth@xxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/buffer.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN fs/buffer.c~vfs-check-bh-b_blocknr-only-if-bh_mapped-is-set fs/buffer.c
--- a/fs/buffer.c~vfs-check-bh-b_blocknr-only-if-bh_mapped-is-set
+++ a/fs/buffer.c
@@ -199,13 +199,13 @@ __find_get_block_slow(struct block_devic
head = page_buffers(page);
bh = head;
do {
- if (bh->b_blocknr == block) {
+ if (!buffer_mapped(bh))
+ all_mapped = 0;
+ else if (bh->b_blocknr == block) {
ret = bh;
get_bh(bh);
goto out_unlock;
}
- if (!buffer_mapped(bh))
- all_mapped = 0;
bh = bh->b_this_page;
} while (bh != head);
_
Patches currently in -mm which might be from knikanth@xxxxxxx are
origin.patch
linux-next.patch
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