From 3266789f9d08b27275bae5ab1dcd27d1bbf15e79 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Wed, 11 Feb 2015 15:08:58 -0500 Subject: [PATCH] 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: Josef Bacik Reviewed-by: Liu Bo Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 5a5b902e647f..3b957921ba59 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -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); } /*