Btrfs: send, avoid unnecessary inode item lookup in the btree
authorFilipe Manana <fdmanana@gmail.com>
Fri, 21 Mar 2014 12:46:54 +0000 (12:46 +0000)
committerChris Mason <clm@fb.com>
Tue, 10 Jun 2014 00:20:37 +0000 (17:20 -0700)
commitb46ab97bcd4ae7954b3a150f642a82cdd1434f40
tree0e4114a0bd2be5e30dc8b1424137970bc3e30c97
parent23f8f9b7caca83d3397b1288a519c6579b7fda88
Btrfs: send, avoid unnecessary inode item lookup in the btree

Regardless of whether the caller is interested or not in knowing the inode's
generation (dir_gen != NULL), get_first_ref always does a btree lookup to get
the inode item. Avoid this useless lookup if dir_gen parameter is NULL (which
is in some cases).

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Chris Mason <clm@fb.com>
fs/btrfs/send.c