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authorAl Viro <viro@www.linux.org.uk>2005-05-01 19:59:17 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 19:59:17 +0400
commit6a3a16f2ef6f335286e2b2bf8284b0ab4ff38ec0 (patch)
treeae559ba5915bf0ca29d6d5dfbd9f44e666f388ea /include/linux/reiserfs_fs.h
parentd46aa455dd5457fdbebad17db4ff4df655cbfbae (diff)
downloadlinux-6a3a16f2ef6f335286e2b2bf8284b0ab4ff38ec0.tar.xz
[PATCH] reiserfs endianness: clone struct reiserfs_key
struct reiserfs_key cloned; (currently) identical struct in_core_key added. Places that expect host-endian data in reiserfs_key switched to in_core_key. Basically, we get annotation of reiserfs_key users and keep the resulting tree obviously equivalent to original. Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Cc: <reiserfs-dev@namesys.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/reiserfs_fs.h')
-rw-r--r--include/linux/reiserfs_fs.h32
1 files changed, 29 insertions, 3 deletions
diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h
index bccff8b17dc4..d0867873a1b5 100644
--- a/include/linux/reiserfs_fs.h
+++ b/include/linux/reiserfs_fs.h
@@ -433,6 +433,23 @@ static inline void set_offset_v2_k_offset( struct offset_v2 *v2, loff_t offset )
# define set_offset_v2_k_offset(v2,val) (offset_v2_k_offset(v2) = (val))
#endif
+struct in_core_offset_v1 {
+ __u32 k_offset;
+ __u32 k_uniqueness;
+} __attribute__ ((__packed__));
+
+struct in_core_offset_v2 {
+#ifdef __LITTLE_ENDIAN
+ /* little endian version */
+ __u64 k_offset:60;
+ __u64 k_type: 4;
+#else
+ /* big endian version */
+ __u64 k_type: 4;
+ __u64 k_offset:60;
+#endif
+} __attribute__ ((__packed__));
+
/* Key of an item determines its location in the S+tree, and
is composed of 4 components */
struct reiserfs_key {
@@ -445,9 +462,18 @@ struct reiserfs_key {
} __attribute__ ((__packed__)) u;
} __attribute__ ((__packed__));
+struct in_core_key {
+ __u32 k_dir_id; /* packing locality: by default parent
+ directory object id */
+ __u32 k_objectid; /* object identifier */
+ union {
+ struct in_core_offset_v1 k_offset_v1;
+ struct in_core_offset_v2 k_offset_v2;
+ } __attribute__ ((__packed__)) u;
+} __attribute__ ((__packed__));
struct cpu_key {
- struct reiserfs_key on_disk_key;
+ struct in_core_key on_disk_key;
int version;
int key_length; /* 3 in all cases but direct2indirect and
indirect2direct conversion */
@@ -1476,7 +1502,7 @@ struct tree_balance
int fs_gen; /* saved value of `reiserfs_generation' counter
see FILESYSTEM_CHANGED() macro in reiserfs_fs.h */
#ifdef DISPLACE_NEW_PACKING_LOCALITIES
- struct reiserfs_key key; /* key pointer, to pass to block allocator or
+ struct in_core_key key; /* key pointer, to pass to block allocator or
another low-level subsystem */
#endif
} ;
@@ -2117,7 +2143,7 @@ struct buffer_head * get_FEB (struct tree_balance *);
struct __reiserfs_blocknr_hint {
struct inode * inode; /* inode passed to allocator, if we allocate unf. nodes */
long block; /* file offset, in blocks */
- struct reiserfs_key key;
+ struct in_core_key key;
struct path * path; /* search path, used by allocator to deternine search_start by
* various ways */
struct reiserfs_transaction_handle * th; /* transaction handle is needed to log super blocks and