Re: [PATCHv4 1/3] fs.c: support buffer cache allocations with gfp modifiers

On Thu, Sep 04, 2014 at 04:29:39PM +0900, Gioh Kim wrote:

A buffer cache is allocated from movable area
because it is referred for a while and released soon.
But some filesystems are taking buffer cache for a long time
and it can disturb page migration.

New APIs are introduced to allocate buffer cache
with user specific flag.
*_gfp APIs are for user want to set page allocation flag for page cache
allocation.
And *_unmovable APIs are for the user wants to allocate page cache from
non-movable area.

Signed-off-by: Gioh Kim <redacted>
Reviewed-by: Jan Kara <jack@suse.cz>

Thanks, I've applied this to the ext4 git tree with a slightly
rewritten commit description (for clarity).

						- Ted