Btrfs: use token to avoid times mapping extent buffer

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The API in tree log code has done sort of changes, and it proves that
we can benifit from using token, so do the same thing here.

function_graph tracer's timer shows that it costs nearly half time
of before(39.788us -> 22.391us).

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

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Liu Bo 2012-12-27 09:01:21 +00:00 • committed by Josef Bacik

parent dcfac4156f

commit 51fab69347

1 changed files with 35 additions and 28 deletions

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fs/btrfs/inode.c

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