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| author | Josef Bacik <josef@toxicpanda.com> | 2020-01-17 17:02:21 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-03-23 19:01:24 +0300 |
| commit | 41a2ee75aab0290a5899677437736ec715dcd1b6 (patch) | |
| tree | 68a747669fafc6d2a4f0da8760de78a004ba4f55 /fs/btrfs/extent-io-tree.h | |
| parent | 790a1d44f93f465b37d9d4ff22eea1850a079309 (diff) | |
| download | linux-41a2ee75aab0290a5899677437736ec715dcd1b6.tar.xz | |
btrfs: introduce per-inode file extent tree
In order to keep track of where we have file extents on disk, and thus
where it is safe to adjust the i_size to, we need to have a tree in
place to keep track of the contiguous areas we have file extents for.
Add helpers to use this tree, as it's not required for NO_HOLES file
systems. We will use this by setting DIRTY for areas we know we have
file extent item's set, and clearing it when we remove file extent items
for truncation.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent-io-tree.h')
| -rw-r--r-- | fs/btrfs/extent-io-tree.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent-io-tree.h b/fs/btrfs/extent-io-tree.h index a3febe746c79..cc3037f9765e 100644 --- a/fs/btrfs/extent-io-tree.h +++ b/fs/btrfs/extent-io-tree.h @@ -43,6 +43,7 @@ enum { IO_TREE_RELOC_BLOCKS, IO_TREE_TRANS_DIRTY_PAGES, IO_TREE_ROOT_DIRTY_LOG_PAGES, + IO_TREE_INODE_FILE_EXTENT, IO_TREE_SELFTEST, }; @@ -222,6 +223,8 @@ int find_first_extent_bit(struct extent_io_tree *tree, u64 start, struct extent_state **cached_state); void find_first_clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 *start_ret, u64 *end_ret, unsigned bits); +int find_contiguous_extent_bit(struct extent_io_tree *tree, u64 start, + u64 *start_ret, u64 *end_ret, unsigned bits); int extent_invalidatepage(struct extent_io_tree *tree, struct page *page, unsigned long offset); bool btrfs_find_delalloc_range(struct extent_io_tree *tree, u64 *start, |