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| author | Nikolay Borisov <nborisov@suse.com> | 2018-06-18 14:13:19 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-08-06 13:12:38 +0200 |
| commit | bc877d285ca3dba24c52406946a4a69847cc7422 (patch) | |
| tree | f7d9439fb1887bd693bde80d9e7ffdf170910a14 /fs/btrfs/ioctl.c | |
| parent | 9912bbf6440ba0555e91d3306520da01872c7c1d (diff) | |
| download | linux-bc877d285ca3dba24c52406946a4a69847cc7422.tar.bz2 | |
btrfs: Deduplicate extent_buffer init code
When a new extent buffer is allocated there are a few mandatory fields
which need to be set in order for the buffer to be sane: level,
generation, bytenr, backref_rev, owner and FSID/UUID. Currently this
is open coded in the callers of btrfs_alloc_tree_block, meaning it's
fairly high in the abstraction hierarchy of operations. This patch
solves this by simply moving this init code in btrfs_init_new_buffer,
since this is the function which initializes a newly allocated
extent buffer. No functional changes.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 0c4b9f364e84..08b8c0b346b3 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -616,14 +616,6 @@ static noinline int create_subvol(struct inode *dir, goto fail; } - memzero_extent_buffer(leaf, 0, sizeof(struct btrfs_header)); - btrfs_set_header_bytenr(leaf, leaf->start); - btrfs_set_header_generation(leaf, trans->transid); - btrfs_set_header_backref_rev(leaf, BTRFS_MIXED_BACKREF_REV); - btrfs_set_header_owner(leaf, objectid); - - write_extent_buffer_fsid(leaf, fs_info->fsid); - write_extent_buffer_chunk_tree_uuid(leaf, fs_info->chunk_tree_uuid); btrfs_mark_buffer_dirty(leaf); inode_item = &root_item->inode; |