[Cluster-devel] [GFS2 PATCH 0/4] fallocate quota fixes

[Abhi Das <adas@redhat.com>]

These patches are related to bz1174295 where fallocate could
exceed quota. I'm posting these for early feedback as these
patches are only compile-tested so far.

patch 1 - This is the patch that actually addresses the quota
	  exceed issue. Quota checks were not being performed
	  against the blocks about to be allocated.

patch 2 - Adds new variants of quota check functions that
	  return the number of allowed blocks if quotas are
	  violated by the number of requested blocks

patch 3 - Adds a new variant of gfs2_inplace_reserve that
	  returns the max number of available blocks if the
	  function returns -ENOSPC due to unavailability of
	  the requested number of blocks.

patch 4 - Allows fallocate to take advantage of patches 2 and
	  3 to efficiently max out quotas or fill up the fs
	  instead of returning -EDQUOT/-ENOSPC and leaving some
	  available blocks unallocated.

Abhi Das (4):
  gfs2: check quota for blocks we're about to allocate
  gfs2: add new quota check functions
  gfs2: add new function gfs2_inpl_rsrv_ret_max_avl
  gfs2: allow fallocate to max out quotas/fs efficiently

 fs/gfs2/aops.c  |  6 +++---
 fs/gfs2/bmap.c  |  2 +-
 fs/gfs2/file.c  | 30 ++++++++++++++++++------------
 fs/gfs2/inode.c | 14 ++++++++------
 fs/gfs2/quota.c | 26 +++++++++++++++++++++-----
 fs/gfs2/quota.h | 20 +++++++++++++++++---
 fs/gfs2/rgrp.c  | 13 +++++++++++--
 fs/gfs2/rgrp.h  | 10 +++++++++-
 fs/gfs2/xattr.c |  2 +-
 9 files changed, 89 insertions(+), 34 deletions(-)

-- 
1.8.1.4