On Sun, 12 May 2013 13:05:00 +0000 (GMT), EUNBONG SONG <eunb.song@xxxxxxxxxxx> wrote: > > > >> Since at this point it's safer to rollback the change and we can > >> investigate more deeply how to fix it correctly for the next > >> development cycle, this is the patch which I'm testing. > > >> - Ted > > > Hello, I've tested with your patch. But the same problem was reproduced. > > Currently, I'm trying to git bisect. If i done git bisect, i will let you know. > > Hi, I've done git bisect. and panic at jbd2_journal_put_journal_head() is caused by > ae4647fb7654676fc44a97e86eb35f9f06b99f66: "jbd2: reduce journal_head size." OK that explains both regressions ext4/jbd2 and ext3/jbd(https://lkml.org/lkml/2013/5/10/434) Probably some race because b_jlist accessed w/o lock some places. BUT i still can not reproduce original issue :( I've tried all types of disks near me (ssd,hdd,usb-dongle), What disk type you use? Is it reproducible on x86? Please post following info: #fdisk -l $HDD #hdparm -t $HDD #df -h #cat /proc/mounts > I write just code patch which revert ae4647fb7654676fc44a97e86eb35f9f06b99f66 because > I don't know the root cause. > > > Signed-off-by: Eunbong Song <eunb.song@xxxxxxxxxxx> > --- > include/linux/journal-head.h | 11 +++++++++-- > 1 files changed, 9 insertions(+), 2 deletions(-) > > diff --git a/include/linux/journal-head.h b/include/linux/journal-head.h > index 13a3da2..c18b46f 100644 > --- a/include/linux/journal-head.h > +++ b/include/linux/journal-head.h > @@ -31,14 +31,21 @@ struct journal_head { > /* > * Journalling list for this buffer [jbd_lock_bh_state()] > */ > - unsigned b_jlist:4; > + unsigned b_jlist; > > /* > * This flag signals the buffer has been modified by > * the currently running transaction > * [jbd_lock_bh_state()] > */ > - unsigned b_modified:1; > + unsigned b_modified; > + > + /* > + * This feild tracks the last transaction id in which this buffer > + * has been cowed > + * [jbd_lock_bh_state()] > + */ > + tid_t b_cow_tid; > > /* > * Copy of the buffer data frozen for writing to the log. > -- > 1.7.0.4 > > > Thanks. N‹㎠咽r›y鉉šbXФ푤v^–)頻{.n+‰램Š{‘喩zX㎍›●}ž꼿z&j:+v‰㉭‘喩zZ+€+zf＂hšˆ~††i鎬zwⅱ?™②&)刪f”^j푹ym…@Aa뛴 0띠h’i -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
