https://github.com/torvalds/linux
Revision 83c9c547168e8b914ea6398430473a4de68c52cc authored by Ming Lei on 05 January 2020, 01:41:14 UTC, committed by Jens Axboe on 09 January 2020, 15:16:12 UTC
Commit 85a8ce62c2ea ("block: add bio_truncate to fix guard_bio_eod")
adds bio_truncate() for handling bio EOD. However, bio_truncate()
doesn't use the passed 'op' parameter from guard_bio_eod's callers.

So bio_trunacate() may retrieve wrong 'op', and zering pages may
not be done for READ bio.

Fixes this issue by moving guard_bio_eod() after bio_set_op_attrs()
in submit_bh_wbc() so that bio_truncate() can always retrieve correct
op info.

Meantime remove the 'op' parameter from guard_bio_eod() because it isn't
used any more.

Cc: Carlos Maiolino <cmaiolino@redhat.com>
Cc: linux-fsdevel@vger.kernel.org
Fixes: 85a8ce62c2ea ("block: add bio_truncate to fix guard_bio_eod")
Signed-off-by: Ming Lei <ming.lei@redhat.com>

Fold in kerneldoc and bio_op() change.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 parent 5741579
History
Tip revision: 83c9c547168e8b914ea6398430473a4de68c52cc authored by Ming Lei on 05 January 2020, 01:41:14 UTC
fs: move guard_bio_eod() after bio_set_op_attrs
Tip revision: 83c9c54
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.clang-format -rw-r--r-- 15.0 KB
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