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authorJan Kara <jack@suse.cz>2008-08-25 19:56:50 +0200
committerMark Fasheh <mfasheh@suse.com>2009-01-05 08:40:23 -0800
commit9e33d69f553aaf11377307e8d6f82deb3385e351 (patch)
treeded5f48f6cf82db976f30d5f0f4d44b941f60f44 /fs/ocfs2/cluster
parentbbbd0eb34bf801dee01e345785959a75258f6567 (diff)
ocfs2: Implementation of local and global quota file handling
For each quota type each node has local quota file. In this file it stores changes users have made to disk usage via this node. Once in a while this information is synced to global file (and thus with other nodes) so that limits enforcement at least aproximately works. Global quota files contain all the information about usage and limits. It's mostly handled by the generic VFS code (which implements a trie of structures inside a quota file). We only have to provide functions to convert structures from on-disk format to in-memory one. We also have to provide wrappers for various quota functions starting transactions and acquiring necessary cluster locks before the actual IO is really started. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/cluster')
-rw-r--r--fs/ocfs2/cluster/masklog.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ocfs2/cluster/masklog.h b/fs/ocfs2/cluster/masklog.h
index 57670c68047..7e72a81bc2d 100644
--- a/fs/ocfs2/cluster/masklog.h
+++ b/fs/ocfs2/cluster/masklog.h
@@ -113,6 +113,7 @@
#define ML_QUORUM 0x0000000008000000ULL /* net connection quorum */
#define ML_EXPORT 0x0000000010000000ULL /* ocfs2 export operations */
#define ML_XATTR 0x0000000020000000ULL /* ocfs2 extended attributes */
+#define ML_QUOTA 0x0000000040000000ULL /* ocfs2 quota operations */
/* bits that are infrequently given and frequently matched in the high word */
#define ML_ERROR 0x0000000100000000ULL /* sent to KERN_ERR */
#define ML_NOTICE 0x0000000200000000ULL /* setn to KERN_NOTICE */