Messages in this thread | | | Date | Thu, 5 Jun 2008 09:20:06 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 1/5] jbd: strictly check for write errors on data buffers |
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On Thu, 5 Jun 2008 10:29:48 -0400 Theodore Tso <tytso@mit.edu> wrote:
> On Thu, Jun 05, 2008 at 08:33:27PM +0900, Hidehiro Kawai wrote: > > > > My patch doesn't change the policy. JBD aborts the journal when > > it detects I/O error in file data since 2.6.11. Perhaps this patch: > > http://marc.info/?l=linux-kernel&m=110483888632225 > > I just added missing error checkings. > > > > Looking at the code paths touched by patch you referenced, you are > correct. And Andrew even signed off on it. :-) > > But if someone was only examining the patch, it wasn't obvious that > the journal was getting aborted when the JBD layer was forcing buffers > from t_sync_datalist to disk. So I suspect the change went in without > proper consideration of the net effect. You just called it out > explicitly in the subject line, which caused Andrew to ask some good > questions; questions that weren't asked in 2005.
Sigh. An object lesson in the value of good changelogging :(
I guess we need to undo this. And yes, propagating errors into AS_EIO is the way. I guess that's safe without holding lock_page(), as long as the bh is pinned.
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