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Commit 758e99fe authored by Christoph Hellwig's avatar Christoph Hellwig Committed by J. Bruce Fields
Browse files

nfsd: minor nfsd_setattr cleanup 



Simplify exit paths, size_change use.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Cc: stable@kernel.org
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent 60709c09

fs/nfsd/vfs.c

+12 −17
Original line number Diff line number Diff line
@@ -377,7 +377,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, 
	__be32		err;

	int		host_err;

	bool		get_write_count;

	int		size_change = 0;

	bool		size_change = (iap->ia_valid & ATTR_SIZE);



	if (iap->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_SIZE))

		accmode |= NFSD_MAY_WRITE|NFSD_MAY_OWNER_OVERRIDE;
@@ -390,11 +390,11 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, 
	/* Get inode */

	err = fh_verify(rqstp, fhp, ftype, accmode);

	if (err)

		goto out;

		return err;

	if (get_write_count) {

		host_err = fh_want_write(fhp);

		if (host_err)

			return nfserrno(host_err);

			goto out;

	}



	dentry = fhp->fh_dentry;
@@ -405,19 +405,21 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, 
		iap->ia_valid &= ~ATTR_MODE;



	if (!iap->ia_valid)

		goto out;

		return 0;



	nfsd_sanitize_attrs(inode, iap);



	if (check_guard && guardtime != inode->i_ctime.tv_sec)

		return nfserr_notsync;



	/*

	 * The size case is special, it changes the file in addition to the

	 * attributes.

	 */

	if (iap->ia_valid & ATTR_SIZE) {

	if (size_change) {

		err = nfsd_get_write_access(rqstp, fhp, iap);

		if (err)

			goto out;

		size_change = 1;

			return err;



		/*

		 * RFC5661, Section 18.30.4:
@@ -432,23 +434,16 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, 


	iap->ia_valid |= ATTR_CTIME;



	if (check_guard && guardtime != inode->i_ctime.tv_sec) {

		err = nfserr_notsync;

		goto out_put_write_access;

	}



	fh_lock(fhp);

	host_err = notify_change(dentry, iap, NULL);

	fh_unlock(fhp);

	err = nfserrno(host_err);



out_put_write_access:

	if (size_change)

		put_write_access(inode);

	if (!err)

		err = nfserrno(commit_metadata(fhp));

out:

	return err;

	if (!host_err)

		host_err = commit_metadata(fhp);

	return nfserrno(host_err);

}



#if defined(CONFIG_NFSD_V4)