Btrfs: use the inode's mapping mask for allocating pages
Johannes pointed out we were allocating only kernel pages for doing writes, which is kind of a big deal if you are on 32bit and have more than a gig of ram. So fix our allocations to use the mapping's gfp but still clear __GFP_FS so we don't re-enter. Thanks, Reported-by:Johannes Weiner <jweiner@redhat.com> Signed-off-by:
Josef Bacik <josef@redhat.com>
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455757c3
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