Andrew Morton [off-list ref] wrote:

quoted

...kill PG_checked please :)  Or at least keep it from spreading.

It already spread - ext3 is using it and I think reiser4.  I thought I had
a patch to rename it to PG_misc1 or somesuch, but no.  It's mandate becomes
"filesystem-specific page flag".

You're carrying a patch to stick a flag called PG_fs_misc, but that has the
same value as PG_checked. An extra page flag beyond PG_uptodate, PG_lock and
PG_writeback is required to make readpage through the cache non-synchronous.

David
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