Eric,
Am Dienstag, 16. Oktober 2007 schrieb Christian Borntraeger:
> Am Dienstag, 16. Oktober 2007 schrieb Eric W. Biederman:
>
> > fs/buffer.c | 3 +++
> > 1 files changed, 3 insertions(+), 0 deletions(-)
> > drivers/block/rd.c | 13 +------------
> > 1 files changed, 1 insertions(+), 12 deletions(-)
>
> Your patches look sane so far. I have applied both patches, and the problem
> seems gone. I will try to get these patches to our testers.
>
> As long as they dont find new problems:
Our testers did only a short test, and then they were stopped by problems with
reiserfs. At the moment I cannot say for sure if your patch caused this, but
we got the following BUG
ReiserFS: ram0: warning: Created .reiserfs_priv on ram0 - reserved for xattr storage.
------------[ cut here ]------------
kernel BUG at /home/autobuild/BUILD/linux-2.6.23-20071017/fs/reiserfs/journal.c:1117!
illegal operation: 0001 [#1]
Modules linked in: reiserfs dm_multipath sunrpc dm_mod qeth ccwgroup vmur
CPU: 3 Not tainted
Process reiserfs/3 (pid: 2592, task: 77dac418, ksp: 7513ee88)
Krnl PSW : 070c3000 fb344380 (flush_commit_list+0x808/0x95c [reiserfs])
R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:3 PM:0
Krnl GPRS: 00000002 7411b5c8 0000002b 00000000
7b04d000 00000001 00000000 76d1de00
7513eec0 00000003 00000012 77f77680
7411b608 fb343b7e fb34404a 7513ee50
Krnl Code: fb344374: a7210002 tmll %r2,2
fb344378: a7840004 brc 8,fb344380
fb34437c: a7f40001 brc 15,fb34437e
>fb344380: 5810d8c2 l %r1,2242(%r13)
fb344384: 5820b03c l %r2,60(%r11)
fb344388: 0de1 basr %r14,%r1
fb34438a: 5810d90e l %r1,2318(%r13)
fb34438e: 5820b03c l %r2,60(%r11)
Looking at the code, this really seems related to dirty buffers, so your patch
is the main suspect at the moment.
if (!barrier) {
/* If there was a write error in the journal - we can't commit
* this transaction - it will be invalid and, if successful,
* will just end up propagating the write error out to
* the file system. */
if (likely(!retval && !reiserfs_is_journal_aborted (journal))) {
if (buffer_dirty(jl->j_commit_bh))
1117----> BUG();
mark_buffer_dirty(jl->j_commit_bh) ;
sync_dirty_buffer(jl->j_commit_bh) ;
}
}
Christian
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