https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

Chris Mason 051e1b9f74 Drop locks in btrfs_search_slot when reading a tree block. ... One lock per btree block can make for significant congestion if everyone has to wait for IO at the high levels of the btree. This drops locks held by a path when doing reads during a tree search. Signed-off-by: Chris Mason <chris.mason@oracle.com>		2008-09-25 11:04:03 -04:00
fs/btrfs	Drop locks in btrfs_search_slot when reading a tree block.	2008-09-25 11:04:03 -04:00