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authorChristoph Hellwig <hch@lst.de>2017-05-05 10:39:10 +0300
committerChristoph Hellwig <hch@lst.de>2017-06-05 17:59:07 +0300
commitcb0ba6cc22f372a2d42f9f2afc5a35f432cc61e2 (patch)
treeac75b2baca4c361a5a02e097482c31d88db42e09 /fs
parente64e17a554746a7f794f3d480d06e4be530fc090 (diff)
downloadlinux-cb0ba6cc22f372a2d42f9f2afc5a35f432cc61e2.tar.xz
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: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/uuid.c25
-rw-r--r--fs/xfs/uuid.h1
-rw-r--r--fs/xfs/xfs_mount.c5
3 files changed, 4 insertions, 27 deletions
diff --git a/fs/xfs/uuid.c b/fs/xfs/uuid.c
index 29ed78c8637b..737c186ea98b 100644
--- a/fs/xfs/uuid.c
+++ b/fs/xfs/uuid.c
@@ -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)
{
diff --git a/fs/xfs/uuid.h b/fs/xfs/uuid.h
index 86bbed071e79..5aea49bf0963 100644
--- a/fs/xfs/uuid.h
+++ b/fs/xfs/uuid.h
@@ -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__ */
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 2eaf81859166..51f7d03ef86c 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -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 */