badblocks: fix wrong return value in badblocks_set if badblocks are disabled
[ Upstream commit39b4954c0a
] MD's rdev_set_badblocks() expects that badblocks_set() returns 1 if badblocks are disabled, otherwise, rdev_set_badblocks() will record superblock changes and return success in that case and md will fail to report an IO error which it should. This bug has existed since badblocks were introduced in commit9e0e252a04
("badblocks: Add core badblock management code"). Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Acked-by: Guoqing Jiang <gqjiang@suse.com> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -178,7 +178,7 @@ int badblocks_set(struct badblocks *bb, sector_t s, int sectors,
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if (bb->shift < 0)
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/* badblocks are disabled */
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return 0;
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return 1;
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if (bb->shift) {
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/* round the start down, and the end up */
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