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(parent: cfbb930) | patch
Btrfs: reduce mount -o ssd CPU usage
authorChris Mason <chris.mason@oracle.com>
Mon, 18 May 2009 14:41:58 +0000 (10:41 -0400)
committerChris Mason <chris.mason@oracle.com>
Wed, 10 Jun 2009 15:29:48 +0000 (11:29 -0400)
commit2c943de6ad795a174dcc424c293bb77f15ae3b8c
tree15e54377cb925312ce0332a6520d78ae99b9fafctree | snapshot (tar.gz zip)
parentcfbb9308463f6dad1334884db046ccf0f1a77918commit | diff
Btrfs: reduce mount -o ssd CPU usage

The block allocator in SSD mode will try to find groups of free blocks
that are close together.  This commit makes it loop less on a given
group size before bumping it.

The end result is that we are less likely to fill small holes in the
available free space, but we don't waste as much CPU building the
large cluster used by ssd mode.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/free-space-cache.c diff | blob | blame | history