Re: [PATCH] cifs: cifsacl: Use a temporary ops variable to reduce code length

From: Steve French
Date: Fri May 12 2017 - 20:57:47 EST


merged into cifs-2.6.git for-next

On Tue, May 9, 2017 at 11:26 PM, Shirish Pargaonkar
<shirishpargaonkar@xxxxxxxxx> wrote:
> Looks correct.
>
> Acked-by: Shirish Pargaonkar <shirishpargaonkar@xxxxxxxxx>
>
> On Sun, May 7, 2017 at 3:31 AM, Joe Perches via samba-technical
> <samba-technical@xxxxxxxxxxxxxxx> wrote:
>> Create an ops variable to store tcon->ses->server->ops and cache
>> indirections and reduce code size a trivial bit.
>>
>> $ size fs/cifs/cifsacl.o*
>> text data bss dec hex filename
>> 5338 136 8 5482 156a fs/cifs/cifsacl.o.new
>> 5371 136 8 5515 158b fs/cifs/cifsacl.o.old
>>
>> Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
>> ---
>> fs/cifs/cifsacl.c | 30 ++++++++++++++----------------
>> 1 file changed, 14 insertions(+), 16 deletions(-)
>>
>> diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
>> index 15bac390dff9..b98436f5c7c7 100644
>> --- a/fs/cifs/cifsacl.c
>> +++ b/fs/cifs/cifsacl.c
>> @@ -1135,20 +1135,19 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
>> u32 acllen = 0;
>> int rc = 0;
>> struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
>> - struct cifs_tcon *tcon;
>> + struct smb_version_operations *ops;
>>
>> cifs_dbg(NOISY, "converting ACL to mode for %s\n", path);
>>
>> if (IS_ERR(tlink))
>> return PTR_ERR(tlink);
>> - tcon = tlink_tcon(tlink);
>>
>> - if (pfid && (tcon->ses->server->ops->get_acl_by_fid))
>> - pntsd = tcon->ses->server->ops->get_acl_by_fid(cifs_sb, pfid,
>> - &acllen);
>> - else if (tcon->ses->server->ops->get_acl)
>> - pntsd = tcon->ses->server->ops->get_acl(cifs_sb, inode, path,
>> - &acllen);
>> + ops = tlink_tcon(tlink)->ses->server->ops;
>> +
>> + if (pfid && (ops->get_acl_by_fid))
>> + pntsd = ops->get_acl_by_fid(cifs_sb, pfid, &acllen);
>> + else if (ops->get_acl)
>> + pntsd = ops->get_acl(cifs_sb, inode, path, &acllen);
>> else {
>> cifs_put_tlink(tlink);
>> return -EOPNOTSUPP;
>> @@ -1181,23 +1180,23 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
>> struct cifs_ntsd *pnntsd = NULL; /* modified acl to be sent to server */
>> struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
>> struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
>> - struct cifs_tcon *tcon;
>> + struct smb_version_operations *ops;
>>
>> if (IS_ERR(tlink))
>> return PTR_ERR(tlink);
>> - tcon = tlink_tcon(tlink);
>> +
>> + ops = tlink_tcon(tlink)->ses->server->ops;
>>
>> cifs_dbg(NOISY, "set ACL from mode for %s\n", path);
>>
>> /* Get the security descriptor */
>>
>> - if (tcon->ses->server->ops->get_acl == NULL) {
>> + if (ops->get_acl == NULL) {
>> cifs_put_tlink(tlink);
>> return -EOPNOTSUPP;
>> }
>>
>> - pntsd = tcon->ses->server->ops->get_acl(cifs_sb, inode, path,
>> - &secdesclen);
>> + pntsd = ops->get_acl(cifs_sb, inode, path, &secdesclen);
>> if (IS_ERR(pntsd)) {
>> rc = PTR_ERR(pntsd);
>> cifs_dbg(VFS, "%s: error %d getting sec desc\n", __func__, rc);
>> @@ -1224,13 +1223,12 @@ id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
>>
>> cifs_dbg(NOISY, "build_sec_desc rc: %d\n", rc);
>>
>> - if (tcon->ses->server->ops->set_acl == NULL)
>> + if (ops->set_acl == NULL)
>> rc = -EOPNOTSUPP;
>>
>> if (!rc) {
>> /* Set the security descriptor */
>> - rc = tcon->ses->server->ops->set_acl(pnntsd, secdesclen, inode,
>> - path, aclflag);
>> + rc = ops->set_acl(pnntsd, secdesclen, inode, path, aclflag);
>> cifs_dbg(NOISY, "set_cifs_acl rc: %d\n", rc);
>> }
>> cifs_put_tlink(tlink);
>> --
>> 2.10.0.rc2.1.g053435c
>>
>>
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--
Thanks,

Steve