Btrfs: allow shrink_delalloc flush the needed reclaimed pages
authorJosef Bacik <josef@redhat.com>
Fri, 14 Oct 2011 18:02:10 +0000 (14:02 -0400)
committerJosef Bacik <josef@redhat.com>
Wed, 19 Oct 2011 19:12:58 +0000 (15:12 -0400)
commit877da174301dde9062b915da4c8103048be49702
treed7110b64088d6e14e86cfeb02c483dd48c303c56
parentf104d044376aadcee74605d66b8d9dc2e145782c
Btrfs: allow shrink_delalloc flush the needed reclaimed pages

Currently we only allow a maximum of 2 megabytes of pages to be flushed at a
time.  This was ok before, but now we have overcommit which will screw us in a
heartbeat if we are quickly filling the disk.  So instead pick either 2
megabytes or the number of pages we need to reclaim to be safe again, which ever
is larger.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
fs/btrfs/extent-tree.c