On Tue, 6 Feb 2007 09:02:33 +0100 (CET) Nick Piggin <[email protected]> wrote:
> Ensure pages are uptodate after returning from read_cache_page, which allows
> us to cut out most of the filesystem-internal PageUptodate_NoLock calls.
Normally it's good to rename functions when we change their behaviour, but
I guess any missed (or out-of-tree) filesystems will just end up doing a
pointless wait_on_page_locked() and will continue to work OK, yes?
> I didn't have a great look down the call chains, but this appears to fixes 7
> possible use-before uptodate in hfs, 2 in hfsplus, 1 in jfs, a few in ecryptfs,
> 1 in jffs2, and a possible cleared data overwritten with readpage in block2mtd.
> All depending on whether the filler is async and/or can return with a !uptodate
> page.
>
> Also, a memory leak in sys_swapon().
Separate patch?
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