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| author | Dave Chinner <dchinner@redhat.com> | 2013-10-29 22:11:52 +1100 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2013-10-30 13:47:22 -0500 |
| commit | 01ba43b873d9e91ba2e0341fe8cb7e89eaa41661 (patch) | |
| tree | 34b0f2ae40956eaf3a2dc1a693f29ff4200eb845 /fs/xfs/xfs_dir2.h | |
| parent | 4bceb18f1551c8c047eeb54d48cda9f5453dc12f (diff) | |
| download | linux-01ba43b873d9e91ba2e0341fe8cb7e89eaa41661.tar.gz linux-01ba43b873d9e91ba2e0341fe8cb7e89eaa41661.tar.bz2 linux-01ba43b873d9e91ba2e0341fe8cb7e89eaa41661.zip | |
xfs: vectorise encoding/decoding directory headers
Conversion from on-disk structures to in-core header structures
currently relies on magic number checks. If the magic number is
wrong, but one of the supported values, we do the wrong thing with
the encode/decode operation. Split these functions so that there are
discrete operations for the specific directory format we are
handling.
In doing this, move all the header encode/decode functions to
xfs_da_format.c as they are directly manipulating the on-disk
format. It should be noted that all the growth in binary size is
from xfs_da_format.c - the rest of the code actaully shrinks.
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
789733 96802 1096 887631 d8b4f fs/xfs/xfs.o.p6
791421 96802 1096 889319 d91e7 fs/xfs/xfs.o.p7
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_dir2.h')
| -rw-r--r-- | fs/xfs/xfs_dir2.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/xfs/xfs_dir2.h b/fs/xfs/xfs_dir2.h index c5cad9d9239d..61195348f667 100644 --- a/fs/xfs/xfs_dir2.h +++ b/fs/xfs/xfs_dir2.h @@ -76,13 +76,26 @@ struct xfs_dir_ops { (*data_unused_p)(struct xfs_dir2_data_hdr *hdr); int (*leaf_hdr_size)(void); + void (*leaf_hdr_to_disk)(struct xfs_dir2_leaf *to, + struct xfs_dir3_icleaf_hdr *from); + void (*leaf_hdr_from_disk)(struct xfs_dir3_icleaf_hdr *to, + struct xfs_dir2_leaf *from); int (*leaf_max_ents)(struct xfs_mount *mp); struct xfs_dir2_leaf_entry * (*leaf_ents_p)(struct xfs_dir2_leaf *lp); int (*node_hdr_size)(void); + void (*node_hdr_to_disk)(struct xfs_da_intnode *to, + struct xfs_da3_icnode_hdr *from); + void (*node_hdr_from_disk)(struct xfs_da3_icnode_hdr *to, + struct xfs_da_intnode *from); struct xfs_da_node_entry * (*node_tree_p)(struct xfs_da_intnode *dap); + + void (*free_hdr_to_disk)(struct xfs_dir2_free *to, + struct xfs_dir3_icfree_hdr *from); + void (*free_hdr_from_disk)(struct xfs_dir3_icfree_hdr *to, + struct xfs_dir2_free *from); }; extern const struct xfs_dir_ops * |