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[CIFS] add local struct inode pointer to cifs_setattr 

Clean up cifs_setattr a bit by adding a local inode pointer, and
changing all of the direntry->d_inode references to it. This also adds a
bit of micro-optimization. d_inode shouldn't change over the life of
this function, so we only need to dereference it once.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton 2008-05-09 21:26:11 +00:00 committed by Steve French
parent 1b20d67218
commit 02eadeffda
2 changed files with 11 additions and 11 deletions
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2
fs/cifs/connect.c
View File

@ -1339,7 +1339,7 @@ cifs_find_tcp_session(struct in_addr *target_ip_addr,
memcmp(&ses->server->addr.sockAddr6.sin6_addr,
target_ip6_addr, sizeof(*target_ip6_addr)))
continue;
/* BB lock server and tcp session and increment use count here?? */
/* BB lock server and tcp session; increment use count here?? */
/* found a match on the TCP session */
*psrvTcp = ses->server;

20
fs/cifs/inode.c
View File

@ -1408,18 +1408,19 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
__u64 uid = 0xFFFFFFFFFFFFFFFFULL;
__u64 gid = 0xFFFFFFFFFFFFFFFFULL;
struct cifsInodeInfo *cifsInode;
struct inode *inode = direntry->d_inode;
xid = GetXid();
cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
direntry->d_name.name, attrs->ia_valid));
cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
cifs_sb = CIFS_SB(inode->i_sb);
pTcon = cifs_sb->tcon;
if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
/* check if we have permission to change attrs */
rc = inode_change_ok(direntry->d_inode, attrs);
rc = inode_change_ok(inode, attrs);
if (rc < 0) {
FreeXid(xid);
return rc;
@ -1432,7 +1433,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
FreeXid(xid);
return -ENOMEM;
}
cifsInode = CIFS_I(direntry->d_inode);
cifsInode = CIFS_I(inode);
if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
/*
@ -1443,9 +1444,9 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
will be truncated anyway? Also, should we error out here if
the flush returns error?
*/
rc = filemap_write_and_wait(direntry->d_inode->i_mapping);
rc = filemap_write_and_wait(inode->i_mapping);
if (rc != 0) {
CIFS_I(direntry->d_inode)->write_behind_rc = rc;
cifsInode->write_behind_rc = rc;
rc = 0;
}
}
@ -1521,9 +1522,8 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
*/
if (rc == 0) {
rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size);
cifs_truncate_page(direntry->d_inode->i_mapping,
direntry->d_inode->i_size);
rc = cifs_vmtruncate(inode, attrs->ia_size);
cifs_truncate_page(inode->i_mapping, inode->i_size);
} else
goto cifs_setattr_exit;
}
@ -1557,7 +1557,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
rc = 0;
#ifdef CONFIG_CIFS_EXPERIMENTAL
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
rc = mode_to_acl(direntry->d_inode, full_path, mode);
rc = mode_to_acl(inode, full_path, mode);
else if ((mode & S_IWUGO) == 0) {
#else
if ((mode & S_IWUGO) == 0) {
@ -1665,7 +1665,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
/* do not need local check to inode_check_ok since the server does
that */
if (!rc)
rc = inode_setattr(direntry->d_inode, attrs);
rc = inode_setattr(inode, attrs);
cifs_setattr_exit:
kfree(full_path);
FreeXid(xid);