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authorMikulas Patocka <mpatocka@redhat.com>2016-08-30 20:11:53 (GMT)
committerMike Snitzer <snitzer@redhat.com>2016-08-30 20:16:49 (GMT)
commita5d60783df61fbb67b7596b8a0f6b4b2e05251d5 (patch)
treef7b3d3e7501084c2228997f074b3978a81918bab /REPORTING-BUGS
parent3eab887a55424fc2c27553b7bfe32330df83f7b8 (diff)
downloadlinux-a5d60783df61fbb67b7596b8a0f6b4b2e05251d5.tar.xz
dm log writes: move IO accounting earlier to fix error path
Move log_one_block()'s atomic_inc(&lc->io_blocks) before bio_alloc() to fix a bug that the target hangs if bio_alloc() fails. The error path does put_io_block(lc), so atomic_inc(&lc->io_blocks) must occur before invoking the error path to avoid underflow of lc->io_blocks. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Reviewed-by: Josef Bacik <jbacik@fb,com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'REPORTING-BUGS')
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