diff options
| author | Dave Chinner <dchinner@redhat.com> | 2013-10-29 22:11:50 +1100 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2013-10-30 13:39:43 -0500 |
| commit | 4141956ae05e0685b14b30f92fdc8fb11b4a0cb2 (patch) | |
| tree | a6043fa6f5aa87f6aa7d1a479768a175b54dd3b5 /fs/xfs/xfs_dir2.h | |
| parent | 2ca9877410594dd321621efc9e1cbcd1ca24d0f3 (diff) | |
| download | linux-4141956ae05e0685b14b30f92fdc8fb11b4a0cb2.tar.bz2 | |
xfs: vectorise directory leaf operations
Next step in the vectorisation process is the leaf block
encode/decode operations. Most of the operations on leaves are
handled by the data block vectors, so there are relatively few of
them here.
Because of all the shuffling of code and having to pass more state
to some functions, this patch doesn't directly reduce the size of
the binary. It does open up many more opportunities for factoring
and optimisation, however.
text data bss dec hex filename
794490 96802 1096 892388 d9de4 fs/xfs/xfs.o.orig
792986 96802 1096 890884 d9804 fs/xfs/xfs.o.p1
792350 96802 1096 890248 d9588 fs/xfs/xfs.o.p2
789293 96802 1096 887191 d8997 fs/xfs/xfs.o.p3
789005 96802 1096 886903 d8997 fs/xfs/xfs.o.p4
789061 96802 1096 886959 d88af fs/xfs/xfs.o.p5
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_dir2.h')
| -rw-r--r-- | fs/xfs/xfs_dir2.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/xfs/xfs_dir2.h b/fs/xfs/xfs_dir2.h index 076010a1376a..9ba9db731990 100644 --- a/fs/xfs/xfs_dir2.h +++ b/fs/xfs/xfs_dir2.h @@ -74,11 +74,15 @@ struct xfs_dir_ops { (*data_entry_p)(struct xfs_dir2_data_hdr *hdr); struct xfs_dir2_data_unused * (*data_unused_p)(struct xfs_dir2_data_hdr *hdr); + + int (*leaf_hdr_size)(void); + int (*leaf_max_ents)(struct xfs_mount *mp); + struct xfs_dir2_leaf_entry * + (*leaf_ents_p)(struct xfs_dir2_leaf *lp); }; -extern const struct xfs_dir_ops xfs_dir2_ops; -extern const struct xfs_dir_ops xfs_dir2_ftype_ops; -extern const struct xfs_dir_ops xfs_dir3_ops; +extern const struct xfs_dir_ops * + xfs_dir_get_ops(struct xfs_mount *mp, struct xfs_inode *dp); /* * Generic directory interface routines |