Btrfs: cache the extent map struct when reading several pages

Browse source

When we read several pages at once, we needn't get the extent map object
every time we deal with a page, and we can cache the extent map object.
So, we can reduce the search time of the extent map, and besides that, we
also can reduce the lock contention of the extent map tree.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

...

This commit is contained in:

Miao Xie 2013-07-25 19:22:37 +08:00 • committed by Chris Mason

parent 9974090bdd

commit 125bac016d

1 changed files with 46 additions and 11 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

57

fs/btrfs/extent_io.c

View file