| commit | dc7fdde39e4962b1a88741f7eba2a6b3be1285d8 | [log] [tgz] |
|---|---|---|
| author | Chris Mason <chris.mason@oracle.com> | Fri Apr 27 14:31:29 2012 -0400 |
| committer | Chris Mason <chris.mason@oracle.com> | Fri Apr 27 14:51:05 2012 -0400 |
| tree | 97cd8b1f9d8c0682c64303d45de1fb55925abcdf | |
| parent | fede766f28dd766d4e8feb321fdb19edb21ef6fb [diff] |
Btrfs: reduce lock contention during extent insertion We're spending huge amounts of time on lock contention during end_io processing because we unconditionally assume we are overwriting an existing extent in the file for each IO. This checks to see if we are outside i_size, and if so, it uses a less expensive readonly search of the btree to look for existing extents. Signed-off-by: Chris Mason <chris.mason@oracle.com>