diff options
| author | Dave Chinner <dchinner@redhat.com> | 2013-08-12 14:49:41 +0400 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2013-08-13 01:44:11 +0400 |
| commit | ff55068c2010f39bcd899ca14b0a3d401d14da54 (patch) | |
| tree | e207720e153c782682f833d0c00441fda88fadb2 /fs/xfs/xfs_sb.h | |
| parent | 1fb7e48db6810093012873a652062648ace6b5bb (diff) | |
| download | linux-ff55068c2010f39bcd899ca14b0a3d401d14da54.tar.xz | |
xfs: introduce xfs_sb.c for sharing with libxfs
xfs_mount.c is shared with userspace, but the only functions that
are shared are to do with physical superblock manipulations. This
means that less than 25% of the xfs_mount.c code is actually shared
with userspace. Move all the superblock functions to xfs_sb.c and
share that instead with libxfs.
Note that this will leave all the in-core transaction related
superblock counter modifications in xfs_mount.c as none of that is
shared with userspace. With a few more small changes, xfs_mount.h
won't need to be shared with userspace anymore, either.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_sb.h')
| -rw-r--r-- | fs/xfs/xfs_sb.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index 40b003e47845..91e163a3794d 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -26,6 +26,7 @@ struct xfs_buf; struct xfs_mount; +struct xfs_trans; #define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */ #define XFS_SB_VERSION_1 1 /* 5.3, 6.0.1, 6.1 */ @@ -674,4 +675,23 @@ xfs_is_quota_inode(struct xfs_sb *sbp, xfs_ino_t ino) #define XFS_B_TO_FSBT(mp,b) (((__uint64_t)(b)) >> (mp)->m_sb.sb_blocklog) #define XFS_B_FSB_OFFSET(mp,b) ((b) & (mp)->m_blockmask) +/* + * perag get/put wrappers for ref counting + */ +extern struct xfs_perag *xfs_perag_get(struct xfs_mount *, xfs_agnumber_t); +extern struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *, xfs_agnumber_t, + int tag); +extern void xfs_perag_put(struct xfs_perag *pag); +extern int xfs_initialize_perag_data(struct xfs_mount *, xfs_agnumber_t); + +extern void xfs_sb_calc_crc(struct xfs_buf *); +extern void xfs_mod_sb(struct xfs_trans *, __int64_t); +extern void xfs_sb_mount_common(struct xfs_mount *, struct xfs_sb *); +extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); +extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); +extern void xfs_sb_quota_from_disk(struct xfs_sb *sbp); + +extern const struct xfs_buf_ops xfs_sb_buf_ops; +extern const struct xfs_buf_ops xfs_sb_quiet_buf_ops; + #endif /* __XFS_SB_H__ */ |