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[PATCH] reiserfs endianness: clone struct reiserfs_key

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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>
This commit is contained in:
Al Viro 2005-05-01 08:59:17 -07:00 committed by Linus Torvalds
parent d46aa455dd
commit 6a3a16f2ef
4 changed files with 34 additions and 7 deletions
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4
fs/reiserfs/bitmap.c
View File

@ -736,7 +736,7 @@ static inline int this_blocknr_allocation_would_make_it_a_large_file(reiserfs_bl
#ifdef DISPLACE_NEW_PACKING_LOCALITIES
static inline void displace_new_packing_locality (reiserfs_blocknr_hint_t *hint)
{
struct reiserfs_key * key = &hint->key;
struct in_core_key * key = &hint->key;
hint->th->displace_new_blocks = 0;
hint->search_start = hint->beg + keyed_hash((char*)(&key->k_objectid),4) % (hint->end - hint->beg);
@ -777,7 +777,7 @@ static inline int old_way (reiserfs_blocknr_hint_t * hint)
static inline void hundredth_slices (reiserfs_blocknr_hint_t * hint)
{
struct reiserfs_key * key = &hint->key;
struct in_core_key * key = &hint->key;
b_blocknr_t slice_start;
slice_start = (keyed_hash((char*)(&key->k_dir_id),4) % 100) * (hint->end / 100);

1
fs/reiserfs/stree.c
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@ -229,6 +229,7 @@ const struct reiserfs_key MIN_KEY = {0, 0, {{0, 0},}};
/* Maximal possible key. It is never in the tree. */
const struct reiserfs_key MAX_KEY = {0xffffffff, 0xffffffff, {{0xffffffff, 0xffffffff},}};
const struct in_core_key MAX_IN_CORE_KEY = {0xffffffff, 0xffffffff, {{0xffffffff, 0xffffffff},}};
/* Get delimiting key of the buffer by looking for it in the buffers in the path, starting from the bottom

4
fs/reiserfs/super.c
View File

@ -110,7 +110,7 @@ static void reiserfs_unlockfs(struct super_block *s) {
reiserfs_allow_writes(s) ;
}
extern const struct reiserfs_key MAX_KEY;
extern const struct in_core_key MAX_IN_CORE_KEY;
/* this is used to delete "save link" when there are no items of a
@ -164,7 +164,7 @@ static int finish_unfinished (struct super_block * s)
/* compose key to look for "save" links */
max_cpu_key.version = KEY_FORMAT_3_5;
max_cpu_key.on_disk_key = MAX_KEY;
max_cpu_key.on_disk_key = MAX_IN_CORE_KEY;
max_cpu_key.key_length = 3;
#ifdef CONFIG_QUOTA

32
include/linux/reiserfs_fs.h
View File

@ -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