From b3582c68920105e29d219714d8a6fbde25a43379 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Thu, 3 Jul 2014 18:58:39 +0800 Subject: f2fs: reduce competition among node page writes We do not need to block on ->node_write among different node page writers e.g. fsync/flush, unless we have a node page writer from write_checkpoint. So it's better use rw_semaphore instead of mutex type for ->node_write to promote performance. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/f2fs/super.c') diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index f253e222dcea..657582fc7601 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -953,7 +953,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) mutex_init(&sbi->gc_mutex); mutex_init(&sbi->writepages); mutex_init(&sbi->cp_mutex); - mutex_init(&sbi->node_write); + init_rwsem(&sbi->node_write); sbi->por_doing = false; spin_lock_init(&sbi->stat_lock); -- cgit v1.2.3-59-g8ed1b