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authorGlauber Costa <glommer@openvz.org>2013-08-28 10:18:18 +1000
committerAl Viro <viro@zeniv.linux.org.uk>2013-09-10 18:56:32 -0400
commit5ca302c8e502ca53b7d75f12127ec0289904003a (patch)
tree80a5b248c01fc3f33392a0b6ef14a2baab86cdb0 /fs/xfs/xfs_qm.c
parenta0b02131c5fcd8545b867db72224b3659e813f10 (diff)
downloadop-kernel-dev-5ca302c8e502ca53b7d75f12127ec0289904003a.zip
op-kernel-dev-5ca302c8e502ca53b7d75f12127ec0289904003a.tar.gz
list_lru: dynamically adjust node arrays
We currently use a compile-time constant to size the node array for the list_lru structure. Due to this, we don't need to allocate any memory at initialization time. But as a consequence, the structures that contain embedded list_lru lists can become way too big (the superblock for instance contains two of them). This patch aims at ameliorating this situation by dynamically allocating the node arrays with the firmware provided nr_node_ids. Signed-off-by: Glauber Costa <glommer@openvz.org> Cc: Dave Chinner <dchinner@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Carlos Maiolino <cmaiolino@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: David Rientjes <rientjes@google.com> Cc: Gleb Natapov <gleb@redhat.com> Cc: Greg Thelen <gthelen@google.com> Cc: J. Bruce Fields <bfields@redhat.com> Cc: Jan Kara <jack@suse.cz> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Stultz <john.stultz@linaro.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Kent Overstreet <koverstreet@google.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Thomas Hellstrom <thellstrom@vmware.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/xfs/xfs_qm.c')
-rw-r--r--fs/xfs/xfs_qm.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index a29169b..7f41386 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -831,11 +831,18 @@ xfs_qm_init_quotainfo(
qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP);
+ if ((error = list_lru_init(&qinf->qi_lru))) {
+ kmem_free(qinf);
+ mp->m_quotainfo = NULL;
+ return error;
+ }
+
/*
* See if quotainodes are setup, and if not, allocate them,
* and change the superblock accordingly.
*/
if ((error = xfs_qm_init_quotainos(mp))) {
+ list_lru_destroy(&qinf->qi_lru);
kmem_free(qinf);
mp->m_quotainfo = NULL;
return error;
@@ -846,8 +853,6 @@ xfs_qm_init_quotainfo(
INIT_RADIX_TREE(&qinf->qi_pquota_tree, GFP_NOFS);
mutex_init(&qinf->qi_tree_lock);
- list_lru_init(&qinf->qi_lru);
-
/* mutex used to serialize quotaoffs */
mutex_init(&qinf->qi_quotaofflock);
@@ -935,6 +940,7 @@ xfs_qm_destroy_quotainfo(
qi = mp->m_quotainfo;
ASSERT(qi != NULL);
+ list_lru_destroy(&qi->qi_lru);
unregister_shrinker(&qi->qi_shrinker);
if (qi->qi_uquotaip) {
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