On Thu, May 18, 2017 at 08:26:54AM +0200, Christoph Hellwig wrote:
> Directly use the v1 intepretation of uuid_t instead.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
--D
> ---
> fs/xfs/uuid.c | 25 -------------------------
> fs/xfs/uuid.h | 1 -
> fs/xfs/xfs_mount.c | 6 +++++-
> 3 files changed, 5 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..742e4a61c0bc 100644
> --- a/fs/xfs/xfs_mount.c
> +++ b/fs/xfs/xfs_mount.c
> @@ -793,7 +793,11 @@ 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] =
> + ((u32)sbp->sb_uuid.v1.clock_seq_hi_and_reserved << 24) |
> + ((u32)sbp->sb_uuid.v1.clock_seq_low << 16) |
> + be16_to_cpu(sbp->sb_uuid.v1.time_mid);
> + mp->m_fixedfsid[1] = be32_to_cpu(sbp->sb_uuid.v1.time_low);
>
> mp->m_dmevmask = 0; /* not persistent; set after each mount */
>
> --
> 2.11.0
>
> --
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