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| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-12-01 15:11:22 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-01-12 15:01:03 +0100 |
| commit | f735b37466c293aa6ecc4d145b6251c162c519f6 (patch) | |
| tree | c7bb26a6db860a23ba7230d323a87ba59c827edd /extent-cache.h | |
| parent | 466e066837898ec047165b8f1081c529092c6d0a (diff) | |
| download | btrfs-progs-f735b37466c293aa6ecc4d145b6251c162c519f6.tar.gz | |
btrfs-progs: extent-tree: Add add_merge_cache_extent function
This add_merge_cache_extent() function will try to merge adjusted
cache_extent.
This is used for later btrfs-convert ext2 free space cache.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'extent-cache.h')
| -rw-r--r-- | extent-cache.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/extent-cache.h b/extent-cache.h index 1ce68ef..f031fbf 100644 --- a/extent-cache.h +++ b/extent-cache.h @@ -110,4 +110,12 @@ int add_cache_extent2(struct cache_tree *tree, u64 objectid, u64 start, u64 size); int insert_cache_extent2(struct cache_tree *tree, struct cache_extent *pe); +/* + * Insert a cache_extent range [start, start + size). + * + * This function may merge with existing cache_extent. + * NOTE: caller must ensure the inserted range won't cover with any existing + * range. + */ +int add_merge_cache_extent(struct cache_tree *tree, u64 start, u64 size); #endif |