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SubjectRe: [PATCH RFC] __bd_forget should wait for inodes using the mapping
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On Fri, 2004-06-18 at 17:27, Andrew Morton wrote:
> Chris Mason <mason@suse.com> wrote:
> >
> > [ skip writing block-special inodes ]
> >
> > Hmmm, any risk in missing data integrity syncs because of this?
>
> Need to think about that. sys_fsync(), sys_fdatasync() and sys_msync() go
> direct to file->f_mapping and sys_sync() will sync the blockdev via its
> kernel-internal inode. What does that leave?

I was worried about O_SYNC, That actually looks safe though,
generic_osync_inode will first write the mapping via filemap_fdatawrite
(the mapping comes from f_mapping).

It doesn't really give me warm fuzzies, but looks safe enough. Al had a
slightly different plan, maybe with your patch we can push his larger
changes off a bit?

-chris


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