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| author | Daeho Jeong <daeho.jeong@samsung.com> | 2015-10-18 05:28:21 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2015-10-18 05:28:21 +0300 |
| commit | 9c02ac97989d544c89f049e8add7149aaea01671 (patch) | |
| tree | d8f5b9c9b82dff0bca390ff899ef54f0b4a5edc8 /fs/jbd2/checkpoint.c | |
| parent | 9008a58e5dcee014f5de69d154e2620870f9224e (diff) | |
| download | linux-9c02ac97989d544c89f049e8add7149aaea01671.tar.xz | |
ext4: fix xfstest generic/269 double revoked buffer bug with bigalloc
When you repeatly execute xfstest generic/269 with bigalloc_1k option
enabled using the below command:
"./kvm-xfstests -c bigalloc_1k -m nodelalloc -C 1000 generic/269"
you can easily see the below bug message.
"JBD2 unexpected failure: jbd2_journal_revoke: !buffer_revoked(bh);"
This means that an already revoked buffer is erroneously revoked again
and it is caused by doing revoke for the buffer at the wrong position
in ext4_free_blocks(). We need to re-position the buffer revoke
procedure for an unspecified buffer after checking the cluster boundary
for bigalloc option. If not, some part of the cluster can be doubly
revoked.
Signed-off-by: Daeho Jeong <daeho.jeong@samsung.com>
Diffstat (limited to 'fs/jbd2/checkpoint.c')
0 files changed, 0 insertions, 0 deletions