On Tue, May 31, 2016 at 09:32:55PM +0200, Christoph Hellwig wrote:
> These fields are separate from the existing roots and levels array
> and thus need a separate logging flag.
>
> That being said the API to logs the AGI/AGF is a bit of a nightmare,
> and I have an idea how to improve it. Stay tuned..
Looks good, tests great!,
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
(Will keep ears open.)
--D
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
> fs/xfs/libxfs/xfs_alloc.c | 4 ++++
> fs/xfs/libxfs/xfs_format.h | 5 ++++-
> fs/xfs/libxfs/xfs_refcount_btree.c | 3 ++-
> 3 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
> index 6cbca1b..e6e32c2 100644
> --- a/fs/xfs/libxfs/xfs_alloc.c
> +++ b/fs/xfs/libxfs/xfs_alloc.c
> @@ -2327,6 +2327,10 @@ xfs_alloc_log_agf(
> offsetof(xfs_agf_t, agf_longest),
> offsetof(xfs_agf_t, agf_btreeblks),
> offsetof(xfs_agf_t, agf_uuid),
> + offsetof(xfs_agf_t, agf_refcount_root),
> + offsetof(xfs_agf_t, agf_refcount_level),
> + /* needed so that we don't log the whole rest of the structure: */
> + offsetof(xfs_agf_t, agf_spare64),
> sizeof(xfs_agf_t)
> };
>
> diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
> index e00037c..5cc0b8c 100644
> --- a/fs/xfs/libxfs/xfs_format.h
> +++ b/fs/xfs/libxfs/xfs_format.h
> @@ -681,7 +681,10 @@ typedef struct xfs_agf {
> #define XFS_AGF_LONGEST 0x00000400
> #define XFS_AGF_BTREEBLKS 0x00000800
> #define XFS_AGF_UUID 0x00001000
> -#define XFS_AGF_NUM_BITS 13
> +#define XFS_AGF_REFCOUNT_ROOT 0x00002000
> +#define XFS_AGF_REFCOUNT_LEVEL 0x00004000
> +#define XFS_AGF_SPARE64 0x00008000
> +#define XFS_AGF_NUM_BITS 16
> #define XFS_AGF_ALL_BITS ((1 << XFS_AGF_NUM_BITS) - 1)
>
> #define XFS_AGF_FLAGS \
> diff --git a/fs/xfs/libxfs/xfs_refcount_btree.c b/fs/xfs/libxfs/xfs_refcount_btree.c
> index 3391cbd..303f959 100644
> --- a/fs/xfs/libxfs/xfs_refcount_btree.c
> +++ b/fs/xfs/libxfs/xfs_refcount_btree.c
> @@ -61,7 +61,8 @@ xfs_refcountbt_set_root(
> pag->pagf_refcount_level += inc;
> xfs_perag_put(pag);
>
> - xfs_alloc_log_agf(cur->bc_tp, agbp, XFS_AGF_ROOTS | XFS_AGF_LEVELS);
> + xfs_alloc_log_agf(cur->bc_tp, agbp,
> + XFS_AGF_REFCOUNT_ROOT | XFS_AGF_REFCOUNT_LEVEL);
> }
>
> STATIC int
> --
> 2.1.4
>
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