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Commit 3266789f authored by Josef Bacik's avatar Josef Bacik Committed by Chris Mason
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Btrfs: don't set and clear delalloc for O_DIRECT writes 



We do this to get the space accounting, but this is just needless churn on the
io_tree, so just drop setting/clearing delalloc and just drop the reserved data
space when we have a successfull allocation.  Thanks,

Signed-off-by: default avatarJosef Bacik <jbacik@fb.com>
Reviewed-by: default avatarLiu Bo <bo.li.liu@oracle.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent 3e05bde8

fs/btrfs/inode.c

+2 −6
Original line number Diff line number Diff line
@@ -7160,7 +7160,7 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock, 
	int ret = 0;



	if (create)

		unlock_bits |= EXTENT_DELALLOC | EXTENT_DIRTY;

		unlock_bits |= EXTENT_DIRTY;

	else

		len = min_t(u64, len, root->sectorsize);
@@ -7296,11 +7296,7 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock, 
			BTRFS_I(inode)->outstanding_extents++;

			spin_unlock(&BTRFS_I(inode)->lock);

		}



		ret = set_extent_bit(&BTRFS_I(inode)->io_tree, lockstart,

				     lockstart + len - 1, EXTENT_DELALLOC, NULL,

				     &cached_state, GFP_NOFS);

		BUG_ON(ret);

		btrfs_free_reserved_data_space(inode, len);

	}



	/*