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Subject[PATCH 13/35] ocfs2: Pass ocfs2_xattr_value_buf into ocfs2_xattr_value_truncate().
Date
From: Joel Becker <joel.becker@oracle.com>

The callers of ocfs2_xattr_value_truncate() now pass in
ocfs2_xattr_value_bufs. These callers are the ones that calculated the
xv location, so they are the right starting point.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---
fs/ocfs2/xattr.c | 66 +++++++++++++++++++++++++++--------------------------
1 files changed, 34 insertions(+), 32 deletions(-)
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 4ce8019..409f9ee 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -718,19 +718,13 @@ out:
}

static int ocfs2_xattr_value_truncate(struct inode *inode,
- struct buffer_head *root_bh,
- struct ocfs2_xattr_value_root *xv,
+ struct ocfs2_xattr_value_buf *vb,
int len,
struct ocfs2_xattr_set_ctxt *ctxt)
{
int ret;
u32 new_clusters = ocfs2_clusters_for_bytes(inode->i_sb, len);
- u32 old_clusters = le32_to_cpu(xv->xr_clusters);
- struct ocfs2_xattr_value_buf vb = {
- .vb_bh = root_bh,
- .vb_xv = xv,
- .vb_access = ocfs2_journal_access,
- };
+ u32 old_clusters = le32_to_cpu(vb->vb_xv->xr_clusters);

if (new_clusters == old_clusters)
return 0;
@@ -738,11 +732,11 @@ static int ocfs2_xattr_value_truncate(struct inode *inode,
if (new_clusters > old_clusters)
ret = ocfs2_xattr_extend_allocation(inode,
new_clusters - old_clusters,
- &vb, ctxt);
+ vb, ctxt);
else
ret = ocfs2_xattr_shrink_size(inode,
old_clusters, new_clusters,
- &vb, ctxt);
+ vb, ctxt);

return ret;
}
@@ -1330,6 +1324,10 @@ static int ocfs2_xattr_set_value_outside(struct inode *inode,
struct ocfs2_xattr_value_root *xv = NULL;
size_t size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
int ret = 0;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = xs->xattr_bh,
+ .vb_access = ocfs2_journal_access
+ };

memset(val, 0, size);
memcpy(val, xi->name, name_len);
@@ -1340,9 +1338,9 @@ static int ocfs2_xattr_set_value_outside(struct inode *inode,
xv->xr_list.l_tree_depth = 0;
xv->xr_list.l_count = cpu_to_le16(1);
xv->xr_list.l_next_free_rec = 0;
+ vb.vb_xv = xv;

- ret = ocfs2_xattr_value_truncate(inode, xs->xattr_bh, xv,
- xi->value_len, ctxt);
+ ret = ocfs2_xattr_value_truncate(inode, &vb, xi->value_len, ctxt);
if (ret < 0) {
mlog_errno(ret);
return ret;
@@ -1352,7 +1350,7 @@ static int ocfs2_xattr_set_value_outside(struct inode *inode,
mlog_errno(ret);
return ret;
}
- ret = __ocfs2_xattr_set_value_outside(inode, ctxt->handle, xv,
+ ret = __ocfs2_xattr_set_value_outside(inode, ctxt->handle, vb.vb_xv,
xi->value, xi->value_len);
if (ret < 0)
mlog_errno(ret);
@@ -1550,9 +1548,12 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
goto out;
} else if (!ocfs2_xattr_is_local(xs->here)) {
/* For existing xattr which has value outside */
- struct ocfs2_xattr_value_root *xv = NULL;
- xv = (struct ocfs2_xattr_value_root *)(val +
- OCFS2_XATTR_SIZE(name_len));
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = xs->xattr_bh,
+ .vb_xv = (struct ocfs2_xattr_value_root *)
+ (val + OCFS2_XATTR_SIZE(name_len)),
+ .vb_access = ocfs2_journal_access,
+ };

if (xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
/*
@@ -1561,8 +1562,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
* then set new value with set_value_outside().
*/
ret = ocfs2_xattr_value_truncate(inode,
- xs->xattr_bh,
- xv,
+ &vb,
xi->value_len,
ctxt);
if (ret < 0) {
@@ -1582,7 +1582,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,

ret = __ocfs2_xattr_set_value_outside(inode,
handle,
- xv,
+ vb.vb_xv,
xi->value,
xi->value_len);
if (ret < 0)
@@ -1594,8 +1594,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
* just trucate old value to zero.
*/
ret = ocfs2_xattr_value_truncate(inode,
- xs->xattr_bh,
- xv,
+ &vb,
0,
ctxt);
if (ret < 0)
@@ -1714,15 +1713,17 @@ static int ocfs2_remove_value_outside(struct inode*inode,
struct ocfs2_xattr_entry *entry = &header->xh_entries[i];

if (!ocfs2_xattr_is_local(entry)) {
- struct ocfs2_xattr_value_root *xv;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_bh = bh,
+ .vb_access = ocfs2_journal_access,
+ };
void *val;

val = (void *)header +
le16_to_cpu(entry->xe_name_offset);
- xv = (struct ocfs2_xattr_value_root *)
+ vb.vb_xv = (struct ocfs2_xattr_value_root *)
(val + OCFS2_XATTR_SIZE(entry->xe_name_len));
- ret = ocfs2_xattr_value_truncate(inode, bh, xv,
- 0, &ctxt);
+ ret = ocfs2_xattr_value_truncate(inode, &vb, 0, &ctxt);
if (ret < 0) {
mlog_errno(ret);
break;
@@ -4651,11 +4652,12 @@ static int ocfs2_xattr_bucket_value_truncate(struct inode *inode,
{
int ret, offset;
u64 value_blk;
- struct buffer_head *value_bh = NULL;
- struct ocfs2_xattr_value_root *xv;
struct ocfs2_xattr_entry *xe;
struct ocfs2_xattr_header *xh = bucket_xh(bucket);
size_t blocksize = inode->i_sb->s_blocksize;
+ struct ocfs2_xattr_value_buf vb = {
+ .vb_access = ocfs2_journal_access,
+ };

xe = &xh->xh_entries[xe_off];

@@ -4669,11 +4671,11 @@ static int ocfs2_xattr_bucket_value_truncate(struct inode *inode,
/* We don't allow ocfs2_xattr_value to be stored in different block. */
BUG_ON(value_blk != (offset + OCFS2_XATTR_ROOT_SIZE - 1) / blocksize);

- value_bh = bucket->bu_bhs[value_blk];
- BUG_ON(!value_bh);
+ vb.vb_bh = bucket->bu_bhs[value_blk];
+ BUG_ON(!vb.vb_bh);

- xv = (struct ocfs2_xattr_value_root *)
- (value_bh->b_data + offset % blocksize);
+ vb.vb_xv = (struct ocfs2_xattr_value_root *)
+ (vb.vb_bh->b_data + offset % blocksize);

ret = ocfs2_xattr_bucket_journal_access(ctxt->handle, bucket,
OCFS2_JOURNAL_ACCESS_WRITE);
@@ -4691,7 +4693,7 @@ static int ocfs2_xattr_bucket_value_truncate(struct inode *inode,
*/
mlog(0, "truncate %u in xattr bucket %llu to %d bytes.\n",
xe_off, (unsigned long long)bucket_blkno(bucket), len);
- ret = ocfs2_xattr_value_truncate(inode, value_bh, xv, len, ctxt);
+ ret = ocfs2_xattr_value_truncate(inode, &vb, len, ctxt);
if (ret) {
mlog_errno(ret);
goto out_dirty;
--
1.5.6


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