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(parent: e3ccfa9) | patch
Btrfs: optimize fsync for the single writer case
authorJosef Bacik <josef@redhat.com>
Thu, 8 Oct 2009 19:30:04 +0000 (15:30 -0400)
committerChris Mason <chris.mason@oracle.com>
Thu, 8 Oct 2009 19:30:04 +0000 (15:30 -0400)
commitff782e0a131c7f669445c07fe5c7ba91e043b7ed
treeff7773e6ce60bf977ed29897c13605f257647684tree | snapshot (tar.gz zip)
parente3ccfa989752c083ceb23c823a84f7ce3a081e61commit | diff
Btrfs: optimize fsync for the single writer case

This patch optimizes the tree logging stuff so it doesn't always wait 1 jiffie
for new people to join the logging transaction if there is only ever 1 writer.
This helps a little bit with latency where we have something like RPM where it
will fdatasync every file it writes, and so waiting the 1 jiffie for every
fdatasync really starts to add up.

Signed-off-by: Josef Bacik <jbacik@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/ctree.h diff | blob | blame | history
fs/btrfs/tree-log.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)