[Ocfs2-devel] [PATCH 04/14] ocfs2: Add a name_len field to ocfs2_xattr_info.
Joel Becker
joel.becker at oracle.com
Wed Aug 19 12:54:29 PDT 2009
Rather than calculating strlen all over the place, let's store the
name length directly on ocfs2_xattr_info.
Signed-off-by: Joel Becker <joel.becker at oracle.com>
---
fs/ocfs2/xattr.c | 84 ++++++++++++++++++++++++++++-------------------------
1 files changed, 44 insertions(+), 40 deletions(-)
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 606235a..53d04b2 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -121,6 +121,7 @@ static struct xattr_handler *ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = {
struct ocfs2_xattr_info {
int xi_name_index;
const char *xi_name;
+ int xi_name_len;
const void *xi_value;
size_t xi_value_len;
};
@@ -1307,9 +1308,9 @@ static int ocfs2_xattr_cleanup(struct inode *inode,
size_t offs)
{
int ret = 0;
- size_t name_len = strlen(xi->xi_name);
void *val = xs->base + offs;
- size_t size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
+ size_t size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
+ OCFS2_XATTR_ROOT_SIZE;
ret = vb->vb_access(handle, inode, vb->vb_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
@@ -1373,16 +1374,16 @@ static int ocfs2_xattr_set_value_outside(struct inode *inode,
struct ocfs2_xattr_value_buf *vb,
size_t offs)
{
- size_t name_len = strlen(xi->xi_name);
void *val = xs->base + offs;
struct ocfs2_xattr_value_root *xv = NULL;
- size_t size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
+ size_t size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
+ OCFS2_XATTR_ROOT_SIZE;
int ret = 0;
memset(val, 0, size);
- memcpy(val, xi->xi_name, name_len);
+ memcpy(val, xi->xi_name, xi->xi_name_len);
xv = (struct ocfs2_xattr_value_root *)
- (val + OCFS2_XATTR_SIZE(name_len));
+ (val + OCFS2_XATTR_SIZE(xi->xi_name_len));
xv->xr_clusters = 0;
xv->xr_last_eb_blk = 0;
xv->xr_list.l_tree_depth = 0;
@@ -1605,7 +1606,6 @@ static void ocfs2_xattr_set_entry_local(struct inode *inode,
struct ocfs2_xattr_entry *last,
size_t min_offs)
{
- size_t name_len = strlen(xi->xi_name);
struct ocfs2_xa_loc loc;
if (xs->xattr_bh == xs->inode_bh)
@@ -1619,7 +1619,7 @@ static void ocfs2_xattr_set_entry_local(struct inode *inode,
le16_add_cpu(&xs->header->xh_count, 1);
ocfs2_xattr_set_type(last, xi->xi_name_index);
ocfs2_xattr_set_local(last, 1);
- last->xe_name_len = name_len;
+ last->xe_name_len = xi->xi_name_len;
} else {
void *first_val;
void *val;
@@ -1631,23 +1631,23 @@ static void ocfs2_xattr_set_entry_local(struct inode *inode,
if (le64_to_cpu(xs->here->xe_value_size) >
OCFS2_XATTR_INLINE_SIZE)
- size = OCFS2_XATTR_SIZE(name_len) +
+ size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_ROOT_SIZE;
else
- size = OCFS2_XATTR_SIZE(name_len) +
+ size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_SIZE(le64_to_cpu(xs->here->xe_value_size));
- if (xi->xi_value && size == OCFS2_XATTR_SIZE(name_len) +
+ if (xi->xi_value && size == OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_SIZE(xi->xi_value_len)) {
/* The old and the new value have the
same size. Just replace the value. */
ocfs2_xattr_set_local(xs->here, 1);
xs->here->xe_value_size = cpu_to_le64(xi->xi_value_len);
/* Clear value bytes. */
- memset(val + OCFS2_XATTR_SIZE(name_len),
+ memset(val + OCFS2_XATTR_SIZE(xi->xi_name_len),
0,
OCFS2_XATTR_SIZE(xi->xi_value_len));
- memcpy(val + OCFS2_XATTR_SIZE(name_len),
+ memcpy(val + OCFS2_XATTR_SIZE(xi->xi_name_len),
xi->xi_value,
xi->xi_value_len);
return;
@@ -1662,14 +1662,14 @@ static void ocfs2_xattr_set_entry_local(struct inode *inode,
}
if (xi->xi_value) {
/* Insert the new name+value. */
- size_t size = OCFS2_XATTR_SIZE(name_len) +
+ size_t size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_SIZE(xi->xi_value_len);
void *val = xs->base + min_offs - size;
xs->here->xe_name_offset = cpu_to_le16(min_offs - size);
memset(val, 0, size);
- memcpy(val, xi->xi_name, name_len);
- memcpy(val + OCFS2_XATTR_SIZE(name_len),
+ memcpy(val, xi->xi_name, xi->xi_name_len);
+ memcpy(val + OCFS2_XATTR_SIZE(xi->xi_name_len),
xi->xi_value,
xi->xi_value_len);
xs->here->xe_value_size = cpu_to_le64(xi->xi_value_len);
@@ -1698,13 +1698,14 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
struct ocfs2_xattr_entry *last;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_dinode *di = (struct ocfs2_dinode *)xs->inode_bh->b_data;
- size_t min_offs = xs->end - xs->base, name_len = strlen(xi->xi_name);
+ size_t min_offs = xs->end - xs->base;
size_t size_l = 0;
handle_t *handle = ctxt->handle;
int free, i, ret;
struct ocfs2_xattr_info xi_l = {
.xi_name_index = xi->xi_name_index,
.xi_name = xi->xi_name,
+ .xi_name_len = xi->xi_name_len,
.xi_value = xi->xi_value,
.xi_value_len = xi->xi_value_len,
};
@@ -1736,27 +1737,28 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
if (!xs->not_found) {
size_t size = 0;
if (ocfs2_xattr_is_local(xs->here))
- size = OCFS2_XATTR_SIZE(name_len) +
+ size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_SIZE(le64_to_cpu(xs->here->xe_value_size));
else
- size = OCFS2_XATTR_SIZE(name_len) +
+ size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_ROOT_SIZE;
free += (size + sizeof(struct ocfs2_xattr_entry));
}
/* Check free space in inode or block */
if (xi->xi_value && xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) {
if (free < sizeof(struct ocfs2_xattr_entry) +
- OCFS2_XATTR_SIZE(name_len) +
+ OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_ROOT_SIZE) {
ret = -ENOSPC;
goto out;
}
- size_l = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
+ size_l = OCFS2_XATTR_SIZE(xi->xi_name_len) +
+ OCFS2_XATTR_ROOT_SIZE;
xi_l.xi_value = (void *)&def_xv;
xi_l.xi_value_len = OCFS2_XATTR_ROOT_SIZE;
} else if (xi->xi_value) {
if (free < sizeof(struct ocfs2_xattr_entry) +
- OCFS2_XATTR_SIZE(name_len) +
+ OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_SIZE(xi->xi_value_len)) {
ret = -ENOSPC;
goto out;
@@ -1765,7 +1767,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
if (!xs->not_found) {
/* For existing extended attribute */
- size_t size = OCFS2_XATTR_SIZE(name_len) +
+ size_t size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_SIZE(le64_to_cpu(xs->here->xe_value_size));
size_t offs = le16_to_cpu(xs->here->xe_name_offset);
void *val = xs->base + offs;
@@ -1780,7 +1782,7 @@ static int ocfs2_xattr_set_entry(struct inode *inode,
} else if (!ocfs2_xattr_is_local(xs->here)) {
/* For existing xattr which has value outside */
vb.vb_xv = (struct ocfs2_xattr_value_root *)
- (val + OCFS2_XATTR_SIZE(name_len));
+ (val + OCFS2_XATTR_SIZE(xi->xi_name_len));
if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) {
/*
@@ -2424,7 +2426,7 @@ static int ocfs2_xattr_can_be_in_inode(struct inode *inode,
value_size = OCFS2_XATTR_SIZE(xi->xi_value_len);
if (free >= sizeof(struct ocfs2_xattr_entry) +
- OCFS2_XATTR_SIZE(strlen(xi->xi_name)) + value_size)
+ OCFS2_XATTR_SIZE(xi->xi_name_len) + value_size)
return 1;
return 0;
@@ -2854,6 +2856,7 @@ int ocfs2_xattr_set_handle(handle_t *handle,
struct ocfs2_xattr_info xi = {
.xi_name_index = name_index,
.xi_name = name,
+ .xi_name_len = strlen(name),
.xi_value = value,
.xi_value_len = value_len,
};
@@ -2936,6 +2939,7 @@ int ocfs2_xattr_set(struct inode *inode,
struct ocfs2_xattr_info xi = {
.xi_name_index = name_index,
.xi_name = name,
+ .xi_name_len = strlen(name),
.xi_value = value,
.xi_value_len = value_len,
};
@@ -4738,7 +4742,6 @@ static void ocfs2_xattr_set_entry_normal(struct inode *inode,
int local)
{
struct ocfs2_xattr_entry *last, *xe;
- int name_len = strlen(xi->xi_name);
struct ocfs2_xattr_header *xh = xs->header;
u16 count = le16_to_cpu(xh->xh_count), start;
size_t blocksize = inode->i_sb->s_blocksize;
@@ -4753,10 +4756,10 @@ static void ocfs2_xattr_set_entry_normal(struct inode *inode,
xe = xs->here;
offs = le16_to_cpu(xe->xe_name_offset);
if (ocfs2_xattr_is_local(xe))
- size = OCFS2_XATTR_SIZE(name_len) +
+ size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_SIZE(le64_to_cpu(xe->xe_value_size));
else
- size = OCFS2_XATTR_SIZE(name_len) +
+ size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_SIZE(OCFS2_XATTR_ROOT_SIZE);
/*
@@ -4766,7 +4769,7 @@ static void ocfs2_xattr_set_entry_normal(struct inode *inode,
* new_size safely here.
* See ocfs2_xattr_set_in_bucket.
*/
- new_size = OCFS2_XATTR_SIZE(name_len) +
+ new_size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
OCFS2_XATTR_SIZE(xi->xi_value_len);
if (xi->xi_value) {
@@ -4783,10 +4786,10 @@ static void ocfs2_xattr_set_entry_normal(struct inode *inode,
val = ocfs2_xattr_bucket_get_val(inode,
xs->bucket, offs);
- memset(val + OCFS2_XATTR_SIZE(name_len), 0,
- size - OCFS2_XATTR_SIZE(name_len));
+ memset(val + OCFS2_XATTR_SIZE(xi->xi_name_len), 0,
+ size - OCFS2_XATTR_SIZE(xi->xi_name_len));
if (OCFS2_XATTR_SIZE(xi->xi_value_len) > 0)
- memcpy(val + OCFS2_XATTR_SIZE(name_len),
+ memcpy(val + OCFS2_XATTR_SIZE(xi->xi_name_len),
xi->xi_value, xi->xi_value_len);
le16_add_cpu(&xh->xh_name_value_len, new_size);
@@ -4827,13 +4830,14 @@ static void ocfs2_xattr_set_entry_normal(struct inode *inode,
le16_add_cpu(&xh->xh_count, 1);
memset(xe, 0, sizeof(struct ocfs2_xattr_entry));
xe->xe_name_hash = cpu_to_le32(name_hash);
- xe->xe_name_len = name_len;
+ xe->xe_name_len = xi->xi_name_len;
ocfs2_xattr_set_type(xe, xi->xi_name_index);
}
set_new_name_value:
/* Insert the new name+value. */
- size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_SIZE(xi->xi_value_len);
+ size = OCFS2_XATTR_SIZE(xi->xi_name_len) +
+ OCFS2_XATTR_SIZE(xi->xi_value_len);
/*
* We must make sure that the name/value pair
@@ -4852,8 +4856,8 @@ set_new_name_value:
xe->xe_name_offset = cpu_to_le16(offs - size);
memset(val, 0, size);
- memcpy(val, xi->xi_name, name_len);
- memcpy(val + OCFS2_XATTR_SIZE(name_len), xi->xi_value,
+ memcpy(val, xi->xi_name, xi->xi_name_len);
+ memcpy(val + OCFS2_XATTR_SIZE(xi->xi_name_len), xi->xi_value,
xi->xi_value_len);
xe->xe_value_size = cpu_to_le64(xi->xi_value_len);
@@ -5168,7 +5172,7 @@ static int ocfs2_xattr_set_in_bucket(struct inode *inode,
char *val = (char *)xi->xi_value;
struct ocfs2_xattr_entry *xe = xs->here;
u32 name_hash = ocfs2_xattr_name_hash(inode, xi->xi_name,
- strlen(xi->xi_name));
+ xi->xi_name_len);
if (!xs->not_found && !ocfs2_xattr_is_local(xe)) {
/*
@@ -5281,7 +5285,7 @@ static int ocfs2_xattr_set_entry_index_block(struct inode *inode,
struct ocfs2_xattr_entry *xe;
u16 count, header_size, xh_free_start;
int free, max_free, need, old;
- size_t value_size = 0, name_len = strlen(xi->xi_name);
+ size_t value_size = 0;
size_t blocksize = inode->i_sb->s_blocksize;
int ret, allocation = 0;
@@ -5308,9 +5312,9 @@ try_again:
if (xs->not_found)
need = sizeof(struct ocfs2_xattr_entry) +
- OCFS2_XATTR_SIZE(name_len) + value_size;
+ OCFS2_XATTR_SIZE(xi->xi_name_len) + value_size;
else {
- need = value_size + OCFS2_XATTR_SIZE(name_len);
+ need = value_size + OCFS2_XATTR_SIZE(xi->xi_name_len);
/*
* We only replace the old value if the new length is smaller
--
1.6.3.3
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