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ocfs2: Use ocfs2_mv_xattr_buckets() in ocfs2_mv_xattr_bucket_cross_cluster().

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Now that ocfs2_mv_xattr_buckets() can move a partial cluster's worth of
buckets, ocfs2_mv_xattr_bucket_cross_cluster() can use it.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Joel Becker 2008-11-26 13:36:24 -08:00 committed by Mark Fasheh
parent 54ecb6b6df
commit c58b6032f9
1 changed files with 30 additions and 82 deletions
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112
fs/ocfs2/xattr.c
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@ -170,11 +170,10 @@ static int ocfs2_xattr_set_entry_index_block(struct inode *inode,
static int ocfs2_delete_xattr_index_block(struct inode *inode,
struct buffer_head *xb_bh);
static int ocfs2_cp_xattr_bucket(struct inode *inode,
handle_t *handle,
u64 s_blkno,
u64 t_blkno,
int t_is_new);
static int ocfs2_mv_xattr_buckets(struct inode *inode, handle_t *handle,
u64 src_blk, u64 last_blk, u64 to_blk,
unsigned int start_bucket,
u32 *first_hash);
static inline u16 ocfs2_xattr_buckets_per_cluster(struct ocfs2_super *osb)
{
@ -3556,115 +3555,64 @@ static int ocfs2_mv_xattr_bucket_cross_cluster(struct inode *inode,
u32 num_clusters,
u32 *first_hash)
{
int i, ret, credits;
int ret;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
int blks_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
int bpc = ocfs2_clusters_to_blocks(inode->i_sb, 1);
int num_buckets = ocfs2_xattr_buckets_per_cluster(osb);
int to_move = num_buckets / 2;
u64 last_cluster_blkno, src_blkno;
u64 src_blkno;
u64 last_cluster_blkno = prev_blkno +
((num_clusters - 1) * ocfs2_clusters_to_blocks(inode->i_sb, 1));
struct ocfs2_xattr_header *xh =
(struct ocfs2_xattr_header *)((*first_bh)->b_data);
struct ocfs2_xattr_bucket *old_first, *new_first;
struct ocfs2_xattr_bucket *new_target, *new_first;
BUG_ON(le16_to_cpu(xh->xh_num_buckets) < num_buckets);
BUG_ON(OCFS2_XATTR_BUCKET_SIZE == osb->s_clustersize);
last_cluster_blkno = prev_blkno + ((num_clusters - 1) * bpc);
src_blkno = last_cluster_blkno + (to_move * blks_per_bucket);
mlog(0, "move half of xattrs in cluster %llu to %llu\n",
(unsigned long long)prev_blkno, (unsigned long long)new_blkno);
(unsigned long long)last_cluster_blkno, (unsigned long long)new_blkno);
/* The first bucket of the original extent */
old_first = ocfs2_xattr_bucket_new(inode);
/* The first bucket of the new extent */
new_first = ocfs2_xattr_bucket_new(inode);
if (!old_first || !new_first) {
/* The target bucket if it was moved to the new extent */
new_target = ocfs2_xattr_bucket_new(inode);
if (!new_target || !new_first) {
ret = -ENOMEM;
mlog_errno(ret);
goto out;
}
ret = ocfs2_read_xattr_bucket(old_first, prev_blkno);
ret = ocfs2_mv_xattr_buckets(inode, handle, prev_blkno,
last_cluster_blkno, new_blkno,
to_move, first_hash);
if (ret) {
mlog_errno(ret);
goto out;
}
/* This is the first bucket that got moved */
src_blkno = last_cluster_blkno + (to_move * blks_per_bucket);
/*
* We need to update the 1st half of the new extent, and we
* need to update the first bucket of the old extent.
*/
credits = ((to_move + 1) * blks_per_bucket) + handle->h_buffer_credits;
ret = ocfs2_extend_trans(handle, credits);
if (ret) {
mlog_errno(ret);
goto out;
}
ret = ocfs2_xattr_bucket_journal_access(handle, old_first,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
for (i = 0; i < to_move; i++) {
ret = ocfs2_cp_xattr_bucket(inode, handle,
src_blkno + (i * blks_per_bucket),
new_blkno + (i * blks_per_bucket),
1);
if (ret) {
mlog_errno(ret);
goto out;
}
}
/*
* Get the new bucket ready before we dirty anything
* (This actually shouldn't fail, because we already dirtied
* it once in ocfs2_cp_xattr_bucket()).
*/
ret = ocfs2_read_xattr_bucket(new_first, new_blkno);
if (ret) {
mlog_errno(ret);
goto out;
}
ret = ocfs2_xattr_bucket_journal_access(handle, new_first,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
/* Now update the headers */
le16_add_cpu(&bucket_xh(old_first)->xh_num_buckets, -to_move);
ocfs2_xattr_bucket_journal_dirty(handle, old_first);
bucket_xh(new_first)->xh_num_buckets = cpu_to_le16(to_move);
ocfs2_xattr_bucket_journal_dirty(handle, new_first);
if (first_hash)
*first_hash = le32_to_cpu(bucket_xh(new_first)->xh_entries[0].xe_name_hash);
/*
* If the target bucket is anywhere past src_blkno, we moved
* it to the new extent. We need to update first_bh and header_bh.
* If the target bucket was part of the moved buckets, we need to
* update first_bh and header_bh.
*/
if ((*header_bh)->b_blocknr >= src_blkno) {
/* We're done with old_first, so we can re-use it. */
ocfs2_xattr_bucket_relse(old_first);
/* Find the block for the new target bucket */
src_blkno = new_blkno +
((*header_bh)->b_blocknr - src_blkno);
/*
* This shouldn't fail - the buffers are in the
* These shouldn't fail - the buffers are in the
* journal from ocfs2_cp_xattr_bucket().
*/
ret = ocfs2_read_xattr_bucket(old_first, src_blkno);
ret = ocfs2_read_xattr_bucket(new_first, new_blkno);
if (ret) {
mlog_errno(ret);
goto out;
}
ret = ocfs2_read_xattr_bucket(new_target, src_blkno);
if (ret) {
mlog_errno(ret);
goto out;
@ -3675,13 +3623,13 @@ static int ocfs2_mv_xattr_bucket_cross_cluster(struct inode *inode,
get_bh(*first_bh);
brelse(*header_bh);
*header_bh = old_first->bu_bhs[0];
*header_bh = new_target->bu_bhs[0];
get_bh(*header_bh);
}
out:
ocfs2_xattr_bucket_free(new_first);
ocfs2_xattr_bucket_free(old_first);
ocfs2_xattr_bucket_free(new_target);
return ret;
}