[PATCH] NFS2: Calculate 'w' a bit later in nfsaclsvc_encode_getaclres()

NFS2: Calculate 'w' a bit later in nfsaclsvc_encode_getaclres()
      This is a small performance optimization since we can return before
      needing 'w'. It also saves a few bytes of .text :
      Before:
           text    data     bss     dec     hex filename
           2406     212       0    2618     a3a fs/nfsd/nfs2acl.o
      After:
           text    data     bss     dec     hex filename
           2400     212       0    2612     a34 fs/nfsd/nfs2acl.o

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
index e3eca0816986fd2b6410f020ad9919c2b5f9e5e4..edde5dc5f796687c84d7ae2dec0140e3e9a453ad 100644 (file)
--- a/fs/nfsd/nfs2acl.c
+++ b/fs/nfsd/nfs2acl.c
@@ -222,12 +222,10 @@ static int nfsaclsvc_encode_getaclres(struct svc_rqst *rqstp, __be32 *p,
 {
        struct dentry *dentry = resp->fh.fh_dentry;
        struct inode *inode = dentry->d_inode;
-       int w = nfsacl_size(
-               (resp->mask & NFS_ACL)   ? resp->acl_access  : NULL,
-               (resp->mask & NFS_DFACL) ? resp->acl_default : NULL);
        struct kvec *head = rqstp->rq_res.head;
        unsigned int base;
        int n;
+       int w;
 
        if (dentry == NULL || dentry->d_inode == NULL)
                return 0;
@@ -239,7 +237,9 @@ static int nfsaclsvc_encode_getaclres(struct svc_rqst *rqstp, __be32 *p,
                return 0;
        base = (char *)p - (char *)head->iov_base;
 
-       rqstp->rq_res.page_len = w;
+       rqstp->rq_res.page_len = w = nfsacl_size(
+               (resp->mask & NFS_ACL)   ? resp->acl_access  : NULL,
+               (resp->mask & NFS_DFACL) ? resp->acl_default : NULL);
        while (w > 0) {
                if (!rqstp->rq_respages[rqstp->rq_resused++])
                        return 0;