xfs: consolidate buffer locking in xfs_buf_get_map

Consolidate the code to lock the buffer based on the passed in flags
into xfs_buf_get_map instead of having two different sites for buffer
lookup vs insertation.  This requires initializing b_lock to unlocked on
allocation and doing an atomic for locking it for newly allocated buffers,
but greatly simplifies the logic.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

0 files changed, 0 insertions, 0 deletions