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Commit cb0ba6cc authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

xfs: remove uuid_getnodeuniq and xfs_uu_t 



Opencode uuid_getnodeuniq in the only caller, and directly decode
the uuid_t representation instead of using a structure cast for it.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent e64e17a5

fs/xfs/uuid.c

+0 −25
Original line number Diff line number Diff line
@@ -17,31 +17,6 @@ 
 */

#include <xfs.h>



/* IRIX interpretation of an uuid_t */

typedef struct {

	__be32	uu_timelow;

	__be16	uu_timemid;

	__be16	uu_timehi;

	__be16	uu_clockseq;

	__be16	uu_node[3];

} xfs_uu_t;



/*

 * uuid_getnodeuniq - obtain the node unique fields of a UUID.

 *

 * This is not in any way a standard or condoned UUID function;

 * it just something that's needed for user-level file handles.

 */

void

uuid_getnodeuniq(uuid_t *uuid, int fsid [2])

{

	xfs_uu_t *uup = (xfs_uu_t *)uuid;



	fsid[0] = (be16_to_cpu(uup->uu_clockseq) << 16) |

		   be16_to_cpu(uup->uu_timemid);

	fsid[1] = be32_to_cpu(uup->uu_timelow);

}



int

uuid_is_nil(uuid_t *uuid)

{

fs/xfs/uuid.h

+0 −1
Original line number Diff line number Diff line
@@ -19,6 +19,5 @@ 
#define __XFS_SUPPORT_UUID_H__



extern int uuid_is_nil(uuid_t *uuid);

extern void uuid_getnodeuniq(uuid_t *uuid, int fsid [2]);



#endif	/* __XFS_SUPPORT_UUID_H__ */

fs/xfs/xfs_mount.c

+4 −1
Original line number Diff line number Diff line
@@ -793,7 +793,10 @@ xfs_mountfs( 
	 *  Copies the low order bits of the timestamp and the randomly

	 *  set "sequence" number out of a UUID.

	 */

	uuid_getnodeuniq(&sbp->sb_uuid, mp->m_fixedfsid);

	mp->m_fixedfsid[0] =

		(get_unaligned_be16(&sbp->sb_uuid.b[8]) << 16) |

		 get_unaligned_be16(&sbp->sb_uuid.b[4]);

	mp->m_fixedfsid[1] = get_unaligned_be32(&sbp->sb_uuid.b[0]);



	mp->m_dmevmask = 0;	/* not persistent; set after each mount */