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authorNathan Scott <nathans@sgi.com>2005-11-02 10:34:53 +1100
committerNathan Scott <nathans@sgi.com>2005-11-02 10:34:53 +1100
commitd8cc890d4095f1eaa7f411a85051015b21262b12 (patch)
treee13bec06a94a8dc5552dab733e90ef4f4d41fb8b /fs/xfs/xfs_attr_leaf.h
parentaa82daa06198b27963fe3d6ee8035855b29f6524 (diff)
[XFS] Ondisk format extension for extended attributes (attr2). Basically,
the data/attr forks now grow up/down from either end of the literal area, rather than dividing the literal area into two chunks and growing both upward. Means we can now make much more efficient use of the attribute space, incl. fitting DMF attributes inline in 256 byte inodes, and large jumps in dbench3 performance numbers. It is self enabling, but can be forced on/off via the attr2/noattr2 mount options. SGI-PV: 941645 SGI-Modid: xfs-linux:xfs-kern:23835a Signed-off-by: Nathan Scott <nathans@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_attr_leaf.h')
-rw-r--r--fs/xfs/xfs_attr_leaf.h14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/xfs/xfs_attr_leaf.h b/fs/xfs/xfs_attr_leaf.h
index b99f0491061..326802f80d5 100644
--- a/fs/xfs/xfs_attr_leaf.h
+++ b/fs/xfs/xfs_attr_leaf.h
@@ -238,23 +238,25 @@ typedef struct xfs_attr_inactive_list {
*========================================================================*/
/*
- * Internal routines when dirsize < XFS_LITINO(mp).
+ * Internal routines when attribute fork size < XFS_LITINO(mp).
*/
-int xfs_attr_shortform_create(struct xfs_da_args *args);
-int xfs_attr_shortform_add(struct xfs_da_args *add);
+void xfs_attr_shortform_create(struct xfs_da_args *args);
+void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff);
int xfs_attr_shortform_lookup(struct xfs_da_args *args);
int xfs_attr_shortform_getvalue(struct xfs_da_args *args);
int xfs_attr_shortform_to_leaf(struct xfs_da_args *args);
-int xfs_attr_shortform_remove(struct xfs_da_args *remove);
+int xfs_attr_shortform_remove(struct xfs_da_args *args);
int xfs_attr_shortform_list(struct xfs_attr_list_context *context);
int xfs_attr_shortform_allfit(struct xfs_dabuf *bp, struct xfs_inode *dp);
+int xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes);
+
/*
- * Internal routines when dirsize == XFS_LBSIZE(mp).
+ * Internal routines when attribute fork size == XFS_LBSIZE(mp).
*/
int xfs_attr_leaf_to_node(struct xfs_da_args *args);
int xfs_attr_leaf_to_shortform(struct xfs_dabuf *bp,
- struct xfs_da_args *args);
+ struct xfs_da_args *args, int forkoff);
int xfs_attr_leaf_clearflag(struct xfs_da_args *args);
int xfs_attr_leaf_setflag(struct xfs_da_args *args);
int xfs_attr_leaf_flipflags(xfs_da_args_t *args);