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| author | Dave Chinner <dchinner@redhat.com> | 2021-06-02 10:48:24 +1000 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2021-06-02 10:48:24 +1000 |
| commit | 61aa005a5bd7705e0bdca8b40c694369d40fb93f (patch) | |
| tree | e4fcb0f482c752cdd0aca9af07e5f43d45d172bd /fs/xfs/xfs_mount.h | |
| parent | 9bbafc71919adfdf83fafd2ce909853b493e7d86 (diff) | |
| download | linux-61aa005a5bd7705e0bdca8b40c694369d40fb93f.tar.gz | |
xfs: prepare for moving perag definitions and support to libxfs
The perag structures really need to be defined with the rest of the AG support infrastructure. The struct xfs_perag and init/teardown has been placed in xfs_mount.[ch] because there are differences in the structure between kernel and userspace. Mainly that userspace doesn't have a lot of the internal stuff that the kernel has for caches and discard and other such structures. However, it makes more sense to move this to libxfs than to keep this separation because we are now moving to use struct perags everywhere in the code instead of passing raw agnumber_t values about. Hence we shoudl really move the support infrastructure to libxfs/xfs_ag.[ch]. To do this without breaking userspace, first we need to rearrange the structures and code so that all the kernel specific code is located together. This makes it simple for userspace to ifdef out the all the parts it does not need, minimising the code differences between kernel and userspace. The next commit will do the move... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'fs/xfs/xfs_mount.h')
| -rw-r--r-- | fs/xfs/xfs_mount.h | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index bb67274ee23f..6e534be5eea8 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -338,6 +338,16 @@ typedef struct xfs_perag { xfs_agino_t pagl_leftrec; xfs_agino_t pagl_rightrec; + int pagb_count; /* pagb slots in use */ + uint8_t pagf_refcount_level; /* recount btree height */ + + /* Blocks reserved for all kinds of metadata. */ + struct xfs_ag_resv pag_meta_resv; + /* Blocks reserved for the reverse mapping btree. */ + struct xfs_ag_resv pag_rmapbt_resv; + + /* -- kernel only structures below this line -- */ + /* * Bitsets of per-ag metadata that have been checked and/or are sick. * Callers should hold pag_state_lock before accessing this field. @@ -364,19 +374,10 @@ typedef struct xfs_perag { /* for rcu-safe freeing */ struct rcu_head rcu_head; - int pagb_count; /* pagb slots in use */ - - /* Blocks reserved for all kinds of metadata. */ - struct xfs_ag_resv pag_meta_resv; - /* Blocks reserved for the reverse mapping btree. */ - struct xfs_ag_resv pag_rmapbt_resv; /* background prealloc block trimming */ struct delayed_work pag_blockgc_work; - /* reference count */ - uint8_t pagf_refcount_level; - /* * Unlinked inode information. This incore information reflects * data stored in the AGI, so callers must hold the AGI buffer lock |