tree d4b38218d7c8ae8ee3a97e89b3025e2cef824eca
parent 95def2ede1a9dd12b164932eaf5fefb67aefc41c
author Filipe David Borba Manana <fdmanana@gmail.com> 1390585329 +0000
committer Chris Mason <clm@fb.com> 1391007984 -0800

Btrfs: make send's file extent item search more efficient

Instead of looking for a file extent item, process it, release the path
and do a btree search for the next file extent item, just process all
file extent items in a leaf without intermediate btree searches. This way
we save cpu and we're not blocking other tasks or affecting concurrency on
the btree, because send's paths use the commit root and skip btree node/leaf
locking.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>