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Btrfs: add tree_mod_dont_log helper
Replace duplicate code by small inline helper function. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
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@ -455,14 +455,25 @@ unlock:
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return ret;
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}
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static inline int tree_mod_dont_log(struct btrfs_fs_info *fs_info,
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struct extent_buffer *eb) {
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smp_mb();
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if (list_empty(&(fs_info)->tree_mod_seq_list))
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return 1;
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if (!eb)
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return 0;
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if (btrfs_header_level(eb) == 0)
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return 1;
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return 0;
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}
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static inline int tree_mod_alloc(struct btrfs_fs_info *fs_info, gfp_t flags,
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struct tree_mod_elem **tm_ret)
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{
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struct tree_mod_elem *tm;
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int seq;
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smp_mb();
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if (list_empty(&fs_info->tree_mod_seq_list))
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if (tree_mod_dont_log(fs_info, NULL))
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return 0;
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tm = *tm_ret = kzalloc(sizeof(*tm), flags);
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@ -643,8 +654,7 @@ tree_mod_log_eb_copy(struct btrfs_fs_info *fs_info, struct extent_buffer *dst,
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int ret;
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int i;
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smp_mb();
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if (list_empty(&fs_info->tree_mod_seq_list))
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if (tree_mod_dont_log(fs_info, NULL))
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return;
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if (btrfs_header_level(dst) == 0 && btrfs_header_level(src) == 0)
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@ -691,11 +701,7 @@ static void tree_mod_log_free_eb(struct btrfs_fs_info *fs_info,
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int ret;
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u32 nritems;
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smp_mb();
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if (list_empty(&fs_info->tree_mod_seq_list))
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return;
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if (btrfs_header_level(eb) == 0)
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if (tree_mod_dont_log(fs_info, eb))
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return;
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nritems = btrfs_header_nritems(eb);
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