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author | Josef Bacik <josef@redhat.com> | 2010-02-03 19:33:23 (GMT) |
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committer | Chris Mason <chris.mason@oracle.com> | 2010-03-15 15:00:13 (GMT) |
commit | 2ac55d41b5d6bf49e76bc85db5431240617e2f8f (patch) | |
tree | ee8e2a716ef0b50388ef5e4a86387ec0499bca89 /Kbuild | |
parent | 5a1a3df1f6c86926cfe8657e6f9b4b4c2f467d60 (diff) | |
download | linux-2ac55d41b5d6bf49e76bc85db5431240617e2f8f.tar.xz |
Btrfs: cache the extent state everywhere we possibly can V2
This patch just goes through and fixes everybody that does
lock_extent()
blah
unlock_extent()
to use
lock_extent_bits()
blah
unlock_extent_cached()
and pass around a extent_state so we only have to do the searches once per
function. This gives me about a 3 mb/s boots on my random write test. I have
not converted some things, like the relocation and ioctl's, since they aren't
heavily used and the relocation stuff is in the middle of being re-written. I
also changed the clear_extent_bit() to only unset the cached state if we are
clearing EXTENT_LOCKED and related stuff, so we can do things like this
lock_extent_bits()
clear delalloc bits
unlock_extent_cached()
without losing our cached state. I tested this thoroughly and turned on
LEAK_DEBUG to make sure we weren't leaking extent states, everything worked out
fine.
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'Kbuild')
0 files changed, 0 insertions, 0 deletions