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nfsd: remove unnecessary positive-dentry check

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vfs_{create,mkdir,mknod} each begin with a call to may_create(), which
returns EEXIST if the object already exists.

This check is therefore unnecessary.

(In the NFSv2 case, nfsd_proc_create also has such a check.  Contrary to
RFC 1094, our code seems to believe that a CREATE of an existing file
should succeed.  I'm leaving that behavior alone.)

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2016-07-21 21:55:42 -04:00
parent b44061d0b9
commit d03d9fe476
1 changed files with 0 additions and 10 deletions
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10
fs/nfsd/vfs.c
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@ -1157,17 +1157,7 @@ nfsd_create_locked(struct svc_rqst *rqstp, struct svc_fh *fhp,
err = nfserr_io;
goto out;
}
/*
* Make sure the child dentry is still negative ...
*/
err = nfserr_exist;
if (d_really_is_positive(dchild)) {
dprintk("nfsd_create: dentry %pd/%pd not negative!\n",
dentry, dchild);
goto out;
}
/* Now let's see if we actually have permissions to create */
err = nfsd_permission(rqstp, fhp->fh_export, dentry, NFSD_MAY_CREATE);
if (err)
goto out;