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| author | David Sterba <dsterba@suse.com> | 2023-12-01 01:42:01 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2023-12-16 00:59:01 +0300 |
| commit | 637e6e0f50d20dcf2f37d62b3f9edf9567b69503 (patch) | |
| tree | 7f2a599b4204a511f56e3684af9580697f79e2fc /fs/btrfs/file-item.c | |
| parent | ed9b50a13edf442f5493603cc54f73bfc6eca1e9 (diff) | |
| download | linux-637e6e0f50d20dcf2f37d62b3f9edf9567b69503.tar.xz | |
btrfs: allocate btrfs_inode::file_extent_tree only without NO_HOLES
The file_extent_tree was added in 41a2ee75aab0 ("btrfs: introduce
per-inode file extent tree") so we have an explicit mapping of the file
extents to know where it is safe to update i_size. When the feature
NO_HOLES is enabled, and it's been a mkfs default since 5.15, the tree
is not necessary.
To save some space in the inode, allocate the tree only when necessary.
This reduces size by 16 bytes from 1096 to 1080 on a x86_64 release
config.
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/file-item.c')
| -rw-r--r-- | fs/btrfs/file-item.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 45cae356e89b..1f0110f48353 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -59,7 +59,7 @@ void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_siz goto out_unlock; } - ret = find_contiguous_extent_bit(&inode->file_extent_tree, 0, &start, + ret = find_contiguous_extent_bit(inode->file_extent_tree, 0, &start, &end, EXTENT_DIRTY); if (!ret && start == 0) i_size = min(i_size, end + 1); @@ -94,7 +94,7 @@ int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start, if (btrfs_fs_incompat(inode->root->fs_info, NO_HOLES)) return 0; - return set_extent_bit(&inode->file_extent_tree, start, start + len - 1, + return set_extent_bit(inode->file_extent_tree, start, start + len - 1, EXTENT_DIRTY, NULL); } @@ -123,7 +123,7 @@ int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start, if (btrfs_fs_incompat(inode->root->fs_info, NO_HOLES)) return 0; - return clear_extent_bit(&inode->file_extent_tree, start, + return clear_extent_bit(inode->file_extent_tree, start, start + len - 1, EXTENT_DIRTY, NULL); } |