Btrfs: extent_io and extent_state optimizations

Browse source

The end_bio routines are changed to take a pointer to the extent state
struct, and the state tree is walked in order to set/clear appropriate
bits as IO completes.  This greatly reduces the number of rbtree searches
done by the end_bio handlers, and reduces lock contention.

The extent_io releasepage function is changed to avoid expensive searches
for locked state.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

...

This commit is contained in:

Chris Mason 2008-01-29 09:59:12 -05:00

parent aadfeb6e39

commit 70dec8079d

4 changed files with 298 additions and 114 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

4

fs/btrfs/disk-io.c

View file

358

fs/btrfs/extent_io.c

View file

15

fs/btrfs/extent_io.h

View file

35

fs/btrfs/inode.c

View file