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ocfs2: Convenient access to an xattr bucket's block number.

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The xattr code often wants to know the block number of an xattr bucket.
This is usually found by dereferencing the first bh hanging off of the
ocfs2_xattr_bucket structure.  Rather than do this all the time, let's
provide a nice little macro.  The idea is ripped from the ocfs2_path
code.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Joel Becker 2008-10-24 16:21:03 -07:00 committed by Mark Fasheh
parent 4ac6032d6c
commit 9c7759aa67
1 changed files with 11 additions and 9 deletions
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20
fs/ocfs2/xattr.c
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@ -154,6 +154,8 @@ static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb)
return len / sizeof(struct ocfs2_xattr_entry);
}
#define bucket_blkno(_b) ((_b)->bu_bhs[0]->b_blocknr)
static inline const char *ocfs2_xattr_prefix(int name_index)
{
struct xattr_handler *handler = NULL;
@ -2290,7 +2292,7 @@ static int ocfs2_xattr_bucket_find(struct inode *inode,
* If we have found the xattr enty, read all the blocks in
* this bucket.
*/
ret = ocfs2_read_blocks(inode, xs->bucket.bu_bhs[0]->b_blocknr + 1,
ret = ocfs2_read_blocks(inode, bucket_blkno(&xs->bucket) + 1,
blk_per_bucket - 1, &xs->bucket.bu_bhs[1],
0);
if (ret) {
@ -2300,7 +2302,7 @@ static int ocfs2_xattr_bucket_find(struct inode *inode,
xs->here = &xs->header->xh_entries[index];
mlog(0, "find xattr %s in bucket %llu, entry = %u\n", name,
(unsigned long long)xs->bucket.bu_bhs[0]->b_blocknr, index);
(unsigned long long)bucket_blkno(&xs->bucket), index);
} else
ret = -ENODATA;
@ -2637,7 +2639,7 @@ static int ocfs2_xattr_update_xattr_search(struct inode *inode,
if (!xs->not_found) {
if (OCFS2_XATTR_BUCKET_SIZE != blocksize) {
ret = ocfs2_read_blocks(inode,
xs->bucket.bu_bhs[0]->b_blocknr + 1,
bucket_blkno(&xs->bucket) + 1,
blk_per_bucket - 1, &xs->bucket.bu_bhs[1],
0);
if (ret) {
@ -2835,7 +2837,7 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
size_t end, offset, len, value_len;
struct ocfs2_xattr_header *xh;
char *entries, *buf, *bucket_buf = NULL;
u64 blkno = bucket->bu_bhs[0]->b_blocknr;
u64 blkno = bucket_blkno(bucket);
u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
u16 xh_free_start;
size_t blocksize = inode->i_sb->s_blocksize;
@ -4124,11 +4126,11 @@ static int ocfs2_xattr_set_entry_in_bucket(struct inode *inode,
mlog(0, "Set xattr entry len = %lu index = %d in bucket %llu\n",
(unsigned long)xi->value_len, xi->name_index,
(unsigned long long)xs->bucket.bu_bhs[0]->b_blocknr);
(unsigned long long)bucket_blkno(&xs->bucket));
if (!xs->bucket.bu_bhs[1]) {
ret = ocfs2_read_blocks(inode,
xs->bucket.bu_bhs[0]->b_blocknr + 1,
bucket_blkno(&xs->bucket) + 1,
blk_per_bucket - 1, &xs->bucket.bu_bhs[1],
0);
if (ret) {
@ -4540,7 +4542,7 @@ static int ocfs2_check_xattr_bucket_collision(struct inode *inode,
xh->xh_entries[0].xe_name_hash) {
mlog(ML_ERROR, "Too much hash collision in xattr bucket %llu, "
"hash = %u\n",
(unsigned long long)bucket->bu_bhs[0]->b_blocknr,
(unsigned long long)bucket_blkno(bucket),
le32_to_cpu(xh->xh_entries[0].xe_name_hash));
return -ENOSPC;
}
@ -4574,7 +4576,7 @@ try_again:
mlog_bug_on_msg(header_size > blocksize, "bucket %llu has header size "
"of %u which exceed block size\n",
(unsigned long long)xs->bucket.bu_bhs[0]->b_blocknr,
(unsigned long long)bucket_blkno(&xs->bucket),
header_size);
if (xi->value && xi->value_len > OCFS2_XATTR_INLINE_SIZE)
@ -4614,7 +4616,7 @@ try_again:
mlog(0, "xs->not_found = %d, in xattr bucket %llu: free = %d, "
"need = %d, max_free = %d, xh_free_start = %u, xh_name_value_len ="
" %u\n", xs->not_found,
(unsigned long long)xs->bucket.bu_bhs[0]->b_blocknr,
(unsigned long long)bucket_blkno(&xs->bucket),
free, need, max_free, le16_to_cpu(xh->xh_free_start),
le16_to_cpu(xh->xh_name_value_len));