Btrfs: don't return true in releasepage unless we actually freed the eb

Browse source

I noticed while looking at an extent_buffer race that we will
unconditionally return 1 if we get down to release_extent_buffer after
clearing the tree ref.  However we can easily race in here and get a ref on
the eb and not actually free the eb.  So make release_extent_buffer return 1
if it free'd the eb and 0 if not so we can be a little kinder to the vm.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>

...

This commit is contained in:

Josef Bacik 2012-07-20 16:05:36 -04:00 • committed by Chris Mason

parent a98cdb85b9

commit e64860aa05

1 changed files with 5 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

9

fs/btrfs/extent_io.c

View file