From 9655d2982b53fdb38a9e0f2f11315b99b92d66e2 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Wed, 2 Sep 2009 15:22:30 -0400 Subject: Btrfs: use a cached state for extent state operations during delalloc This changes the btrfs code to find delalloc ranges in the extent state tree to use the new state caching code from set/test bit. It reduces one of the biggest causes of rbtree searches in the writeback path. test_range_bit is also modified to take the cached state as a starting point while searching. Signed-off-by: Chris Mason --- fs/btrfs/ordered-data.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'fs/btrfs/ordered-data.c') diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index d6f0806c682..7f751e462f0 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -262,7 +262,7 @@ int btrfs_dec_test_ordered_pending(struct inode *inode, ret = test_range_bit(io_tree, entry->file_offset, entry->file_offset + entry->len - 1, - EXTENT_ORDERED, 0); + EXTENT_ORDERED, 0, NULL); if (ret == 0) ret = test_and_set_bit(BTRFS_ORDERED_IO_DONE, &entry->flags); out: @@ -522,7 +522,7 @@ again: end--; } if (test_range_bit(&BTRFS_I(inode)->io_tree, start, orig_end, - EXTENT_ORDERED | EXTENT_DELALLOC, 0)) { + EXTENT_ORDERED | EXTENT_DELALLOC, 0, NULL)) { schedule_timeout(1); goto again; } @@ -613,7 +613,7 @@ int btrfs_ordered_update_i_size(struct inode *inode, */ if (test_range_bit(io_tree, disk_i_size, ordered->file_offset + ordered->len - 1, - EXTENT_DELALLOC, 0)) { + EXTENT_DELALLOC, 0, NULL)) { goto out; } /* @@ -664,7 +664,7 @@ int btrfs_ordered_update_i_size(struct inode *inode, */ if (i_size_test > entry_end(ordered) && !test_range_bit(io_tree, entry_end(ordered), i_size_test - 1, - EXTENT_DELALLOC, 0)) { + EXTENT_DELALLOC, 0, NULL)) { new_i_size = min_t(u64, i_size_test, i_size_read(inode)); } BTRFS_I(inode)->disk_i_size = new_i_size; -- cgit v1.2.3-18-g5258