Commit f71354bc authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Lachlan McIlroy
Browse files

[XFS] Cleanup various fid related bits: 



- merge xfs_fid2 into it's only caller xfs_dm_inode_to_fh.
- remove xfs_vget and opencode it in the two callers, simplifying
  both of them by avoiding the awkward calling convetion.
- assign directly to the dm_fid_t members in various places in the
  dmapi code instead of casting them to xfs_fid_t first (which
  is identical to dm_fid_t)

SGI-PV: 974747
SGI-Modid: xfs-linux-melb:xfs-kern:30258a

Signed-off-by: default avatarChristoph Hellwig <hch@infradead.org>
Signed-off-by: default avatarVlad Apostolov <vapo@sgi.com>
Signed-off-by: default avatarLachlan McIlroy <lachlan@sgi.com>
parent edd319dc

fs/xfs/linux-2.6/xfs_export.c

+17 −8
Original line number Diff line number Diff line
@@ -118,20 +118,29 @@ xfs_nfs_get_inode( 
	u64			ino,

	u32			generation)

 {

	xfs_fid_t		xfid;

	bhv_vnode_t		*vp;

 	xfs_mount_t		*mp = XFS_M(sb);

	xfs_inode_t		*ip;

	int			error;



	xfid.fid_len = sizeof(xfs_fid_t) - sizeof(xfid.fid_len);

	xfid.fid_pad = 0;

	xfid.fid_ino = ino;

	xfid.fid_gen = generation;

	/*

	 * NFS can sometimes send requests for ino 0.  Fail them gracefully.

	 */

	if (ino == 0)

		return ERR_PTR(-ESTALE);



	error = xfs_vget(XFS_M(sb), &vp, &xfid);

	error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);

	if (error)

		return ERR_PTR(-error);

	if (!ip)

		return ERR_PTR(-EIO);



	if (!ip->i_d.di_mode || ip->i_d.di_gen != generation) {

		xfs_iput_new(ip, XFS_ILOCK_SHARED);

		return ERR_PTR(-ENOENT);

	}



	return vp ? vn_to_inode(vp) : NULL;

	xfs_iunlock(ip, XFS_ILOCK_SHARED);

	return ip->i_vnode;

}



STATIC struct dentry *

fs/xfs/xfs_vfsops.c

+0 −53
Original line number Diff line number Diff line
@@ -1408,56 +1408,3 @@ xfs_syncsub( 


	return XFS_ERROR(last_error);

}
 


/*

 * xfs_vget - called by DMAPI and NFSD to get vnode from file handle

 */

int

xfs_vget(

	xfs_mount_t	*mp,

	bhv_vnode_t	**vpp,

	xfs_fid_t	*xfid)

{

	xfs_inode_t	*ip;

	int		error;

	xfs_ino_t	ino;

	unsigned int	igen;



	/*

	 * Invalid.  Since handles can be created in user space and passed in

	 * via gethandle(), this is not cause for a panic.

	 */

	if (xfid->fid_len != sizeof(*xfid) - sizeof(xfid->fid_len))

		return XFS_ERROR(EINVAL);



	ino  = xfid->fid_ino;

	igen = xfid->fid_gen;



	/*

	 * NFS can sometimes send requests for ino 0.  Fail them gracefully.

	 */

	if (ino == 0)

		return XFS_ERROR(ESTALE);



	error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);

	if (error) {

		*vpp = NULL;

		return error;

	}



	if (ip == NULL) {

		*vpp = NULL;

		return XFS_ERROR(EIO);

	}



	if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) {

		xfs_iput_new(ip, XFS_ILOCK_SHARED);

		*vpp = NULL;

		return XFS_ERROR(ENOENT);

	}



	*vpp = XFS_ITOV(ip);

	xfs_iunlock(ip, XFS_ILOCK_SHARED);

	return 0;

}

fs/xfs/xfs_vfsops.h

+0 −1
Original line number Diff line number Diff line
@@ -15,7 +15,6 @@ int xfs_mntupdate(struct xfs_mount *mp, int *flags, 
		struct xfs_mount_args *args);

int xfs_root(struct xfs_mount *mp, bhv_vnode_t **vpp);

int xfs_sync(struct xfs_mount *mp, int flags);

int xfs_vget(struct xfs_mount *mp, bhv_vnode_t **vpp, struct xfs_fid *xfid);

void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,

		int lnnum);

void xfs_attr_quiesce(struct xfs_mount *mp);

fs/xfs/xfs_vnodeops.c

+0 −21
Original line number Diff line number Diff line
@@ -3457,27 +3457,6 @@ std_return: 
	goto std_return;

}





int

xfs_fid2(

	xfs_inode_t	*ip,

	xfs_fid_t	*xfid)

{

	xfs_itrace_entry(ip);



	xfid->fid_len = sizeof(xfs_fid_t) - sizeof(xfid->fid_len);

	xfid->fid_pad = 0;

	/*

	 * use memcpy because the inode is a long long and there's no

	 * assurance that xfid->fid_ino is properly aligned.

	 */

	memcpy(&xfid->fid_ino, &ip->i_ino, sizeof(xfid->fid_ino));

	xfid->fid_gen = ip->i_d.di_gen;



	return 0;

}





int

xfs_rwlock(

	xfs_inode_t	*ip,

fs/xfs/xfs_vnodeops.h

+0 −1
Original line number Diff line number Diff line
@@ -39,7 +39,6 @@ int xfs_readdir(struct xfs_inode *dp, void *dirent, size_t bufsize, 
int xfs_symlink(struct xfs_inode *dp, bhv_vname_t *dentry,

		char *target_path, mode_t mode, bhv_vnode_t **vpp,

		struct cred *credp);

int xfs_fid2(struct xfs_inode *ip, struct xfs_fid *xfid);

int xfs_rwlock(struct xfs_inode *ip, bhv_vrwlock_t locktype);

void xfs_rwunlock(struct xfs_inode *ip, bhv_vrwlock_t locktype);

int xfs_inode_flush(struct xfs_inode *ip, int flags);

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