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SubjectRe: [PATCH] cifs: cifsacl: Use a temporary ops variable to reduce code length
Looks correct.

Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>

On Sun, May 7, 2017 at 3:31 AM, Joe Perches via samba-technical
<samba-technical@lists.samba.org> 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@perches.com>
> ---
> 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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