Commit 1aceabf3 authored Jan 09, 2017 by Michal Hocko Committed by David Sterba Feb 14, 2017

btrfs: drop gfp mask tweaking in try_release_extent_state



try_release_extent_state reduces the gfp mask to GFP_NOFS if it is
compatible. This is true for GFP_KERNEL as well. There is no real
reason to do that though. There is no new lock taken down the
the only consumer of the gfp mask which is
try_release_extent_state
  clear_extent_bit
    __clear_extent_bit
      alloc_extent_state

So this seems just unnecessary and confusing.

Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent 3ba7ab22

fs/btrfs/extent_io.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -4269,8 +4269,6 @@ static int try_release_extent_state(struct extent_map_tree *map,
		EXTENT_IOBITS, 0, NULL))
		ret = 0;
		else {
		if ((mask & GFP_NOFS) == GFP_NOFS)
		mask = GFP_NOFS;
		/*
		* at this point we can safely clear everything except the
		* locked bit and the nodatasum bit

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