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md: Reassigned the parameters if read_seqretry returned true in func md_is_badblock.

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This bug was introduced by commit(v3.0-rc7-126-g2230dfe).
So fix is suitable for 3.0.y thru 3.6.y.

Cc: stable@vger.kernel.org
Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
majianpeng
2012-11-06 17:13:44 +08:00
committed by NeilBrown
parent ed30be077e
commit ab05613a06
1 changed files with 4 additions and 3 deletions
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7
drivers/md/md.c
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@@ -7936,9 +7936,9 @@ int md_is_badblock(struct badblocks *bb, sector_t s, int sectors,
sector_t *first_bad, int *bad_sectors) sector_t *first_bad, int *bad_sectors)
{ {
int hi; int hi;
int lo = 0; int lo;
u64 *p = bb->page; u64 *p = bb->page;
int rv = 0; int rv;
sector_t target = s + sectors; sector_t target = s + sectors;
unsigned seq; unsigned seq;
@@ -7953,7 +7953,8 @@ int md_is_badblock(struct badblocks *bb, sector_t s, int sectors,
retry: retry:
seq = read_seqbegin(&bb->lock); seq = read_seqbegin(&bb->lock);
lo = 0;
rv = 0;
hi = bb->count; hi = bb->count;
/* Binary search between lo and hi for 'target' /* Binary search between lo and hi for 'target'