btrfs: Deduplicate extent_buffer init code
authorNikolay Borisov <nborisov@suse.com>
Mon, 18 Jun 2018 11:13:19 +0000 (14:13 +0300)
committerDavid Sterba <dsterba@suse.com>
Mon, 6 Aug 2018 11:12:38 +0000 (13:12 +0200)
commitbc877d285ca3dba24c52406946a4a69847cc7422
treef7d9439fb1887bd693bde80d9e7ffdf170910a14
parent9912bbf6440ba0555e91d3306520da01872c7c1d
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>
fs/btrfs/ctree.c
fs/btrfs/disk-io.c
fs/btrfs/extent-tree.c
fs/btrfs/ioctl.c