From e9b7fd4d8b7c915cff353ca085b83bd19737396b Mon Sep 17 00:00:00 2001 From: Jan Schmidt Date: Thu, 31 May 2012 14:59:09 +0200 Subject: Btrfs: add tree_mod_dont_log helper Replace duplicate code by small inline helper function. Signed-off-by: Jan Schmidt --- fs/btrfs/ctree.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) (limited to 'fs/btrfs/ctree.c') diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 26e8dc1681b0..c7c48489b963 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -455,14 +455,25 @@ unlock: return ret; } +static inline int tree_mod_dont_log(struct btrfs_fs_info *fs_info, + struct extent_buffer *eb) { + smp_mb(); + if (list_empty(&(fs_info)->tree_mod_seq_list)) + return 1; + if (!eb) + return 0; + if (btrfs_header_level(eb) == 0) + return 1; + return 0; +} + static inline int tree_mod_alloc(struct btrfs_fs_info *fs_info, gfp_t flags, struct tree_mod_elem **tm_ret) { struct tree_mod_elem *tm; int seq; - smp_mb(); - if (list_empty(&fs_info->tree_mod_seq_list)) + if (tree_mod_dont_log(fs_info, NULL)) return 0; tm = *tm_ret = kzalloc(sizeof(*tm), flags); @@ -643,8 +654,7 @@ tree_mod_log_eb_copy(struct btrfs_fs_info *fs_info, struct extent_buffer *dst, int ret; int i; - smp_mb(); - if (list_empty(&fs_info->tree_mod_seq_list)) + if (tree_mod_dont_log(fs_info, NULL)) return; if (btrfs_header_level(dst) == 0 && btrfs_header_level(src) == 0) @@ -691,11 +701,7 @@ static void tree_mod_log_free_eb(struct btrfs_fs_info *fs_info, int ret; u32 nritems; - smp_mb(); - if (list_empty(&fs_info->tree_mod_seq_list)) - return; - - if (btrfs_header_level(eb) == 0) + if (tree_mod_dont_log(fs_info, eb)) return; nritems = btrfs_header_nritems(eb); -- cgit v1.2.3