diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2024-11-03 20:19:05 -0800 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2024-11-05 13:38:35 -0800 |
| commit | 0e4875b3fb24c5bfdf685876c76713cda5a23b65 (patch) | |
| tree | f06b8e4a8193ee13dafea17da4881e0e19fd2a86 | |
| parent | 87fe4c34a383d51ec75f254240bcd08828f4ce5a (diff) | |
xfs: define locking primitives for realtime groups
Define helper functions to lock all metadata inodes related to a
realtime group. There's not much to look at now, but this will become
important when we add per-rtgroup metadata files and online fsck code
for them.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | fs/xfs/libxfs/xfs_rtgroup.c | 49 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_rtgroup.h | 16 |
2 files changed, 65 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_rtgroup.c b/fs/xfs/libxfs/xfs_rtgroup.c index 9d3842e83c93..e3f167ce5479 100644 --- a/fs/xfs/libxfs/xfs_rtgroup.c +++ b/fs/xfs/libxfs/xfs_rtgroup.c @@ -149,3 +149,52 @@ xfs_update_last_rtgroup_size( xfs_rtgroup_rele(rtg); return 0; } + +/* Lock metadata inodes associated with this rt group. */ +void +xfs_rtgroup_lock( + struct xfs_rtgroup *rtg, + unsigned int rtglock_flags) +{ + ASSERT(!(rtglock_flags & ~XFS_RTGLOCK_ALL_FLAGS)); + ASSERT(!(rtglock_flags & XFS_RTGLOCK_BITMAP_SHARED) || + !(rtglock_flags & XFS_RTGLOCK_BITMAP)); + + if (rtglock_flags & XFS_RTGLOCK_BITMAP) + xfs_rtbitmap_lock(rtg_mount(rtg)); + else if (rtglock_flags & XFS_RTGLOCK_BITMAP_SHARED) + xfs_rtbitmap_lock_shared(rtg_mount(rtg), XFS_RBMLOCK_BITMAP); +} + +/* Unlock metadata inodes associated with this rt group. */ +void +xfs_rtgroup_unlock( + struct xfs_rtgroup *rtg, + unsigned int rtglock_flags) +{ + ASSERT(!(rtglock_flags & ~XFS_RTGLOCK_ALL_FLAGS)); + ASSERT(!(rtglock_flags & XFS_RTGLOCK_BITMAP_SHARED) || + !(rtglock_flags & XFS_RTGLOCK_BITMAP)); + + if (rtglock_flags & XFS_RTGLOCK_BITMAP) + xfs_rtbitmap_unlock(rtg_mount(rtg)); + else if (rtglock_flags & XFS_RTGLOCK_BITMAP_SHARED) + xfs_rtbitmap_unlock_shared(rtg_mount(rtg), XFS_RBMLOCK_BITMAP); +} + +/* + * Join realtime group metadata inodes to the transaction. The ILOCKs will be + * released on transaction commit. + */ +void +xfs_rtgroup_trans_join( + struct xfs_trans *tp, + struct xfs_rtgroup *rtg, + unsigned int rtglock_flags) +{ + ASSERT(!(rtglock_flags & ~XFS_RTGLOCK_ALL_FLAGS)); + ASSERT(!(rtglock_flags & XFS_RTGLOCK_BITMAP_SHARED)); + + if (rtglock_flags & XFS_RTGLOCK_BITMAP) + xfs_rtbitmap_trans_join(tp); +} diff --git a/fs/xfs/libxfs/xfs_rtgroup.h b/fs/xfs/libxfs/xfs_rtgroup.h index 8872c27a9585..7d82eb753fd0 100644 --- a/fs/xfs/libxfs/xfs_rtgroup.h +++ b/fs/xfs/libxfs/xfs_rtgroup.h @@ -197,6 +197,19 @@ xfs_rtxnum_t xfs_rtgroup_extents(struct xfs_mount *mp, xfs_rgnumber_t rgno); int xfs_update_last_rtgroup_size(struct xfs_mount *mp, xfs_rgnumber_t prev_rgcount); + +/* Lock the rt bitmap inode in exclusive mode */ +#define XFS_RTGLOCK_BITMAP (1U << 0) +/* Lock the rt bitmap inode in shared mode */ +#define XFS_RTGLOCK_BITMAP_SHARED (1U << 1) + +#define XFS_RTGLOCK_ALL_FLAGS (XFS_RTGLOCK_BITMAP | \ + XFS_RTGLOCK_BITMAP_SHARED) + +void xfs_rtgroup_lock(struct xfs_rtgroup *rtg, unsigned int rtglock_flags); +void xfs_rtgroup_unlock(struct xfs_rtgroup *rtg, unsigned int rtglock_flags); +void xfs_rtgroup_trans_join(struct xfs_trans *tp, struct xfs_rtgroup *rtg, + unsigned int rtglock_flags); #else static inline void xfs_free_rtgroups(struct xfs_mount *mp, xfs_rgnumber_t first_rgno, xfs_rgnumber_t end_rgno) @@ -212,6 +225,9 @@ static inline int xfs_initialize_rtgroups(struct xfs_mount *mp, # define xfs_rtgroup_extents(mp, rgno) (0) # define xfs_update_last_rtgroup_size(mp, rgno) (-EOPNOTSUPP) +# define xfs_rtgroup_lock(rtg, gf) ((void)0) +# define xfs_rtgroup_unlock(rtg, gf) ((void)0) +# define xfs_rtgroup_trans_join(tp, rtg, gf) ((void)0) #endif /* CONFIG_XFS_RT */ #endif /* __LIBXFS_RTGROUP_H */ |