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Commit 46fefe41 authored by Filipe Manana's avatar Filipe Manana Committed by Chris Mason
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Btrfs: remove unused wait queue in struct extent_buffer 



The lock_wq wait queue is not used anywhere, therefore just remove it.
On a x86_64 system, this reduced sizeof(struct extent_buffer) from 320
bytes down to 296 bytes, which means a 4Kb page can now be used for
13 extent buffers instead of 12.

Signed-off-by: default avatarFilipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent ea4ebde0

fs/btrfs/extent_io.h

+0 −1
Original line number Diff line number Diff line
@@ -158,7 +158,6 @@ struct extent_buffer { 
	 * to unlock

	 */

	wait_queue_head_t read_lock_wq;

	wait_queue_head_t lock_wq;

	struct page *pages[INLINE_EXTENT_BUFFER_PAGES];

#ifdef CONFIG_BTRFS_DEBUG

	struct list_head leak_list;