diff options
Diffstat (limited to 'fs/xfs/libxfs')
| -rw-r--r-- | fs/xfs/libxfs/xfs_sb.c | 22 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_sb.h | 3 |
2 files changed, 25 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index ea6c85a4c27c..d485e14313c6 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -1097,3 +1097,25 @@ xfs_sb_read_secondary( *bpp = bp; return 0; } + +/* Get an uninitialised secondary superblock buffer. */ +int +xfs_sb_get_secondary( + struct xfs_mount *mp, + struct xfs_trans *tp, + xfs_agnumber_t agno, + struct xfs_buf **bpp) +{ + struct xfs_buf *bp; + + ASSERT(agno != 0 && agno != NULLAGNUMBER); + bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, + XFS_AG_DADDR(mp, agno, XFS_SB_BLOCK(mp)), + XFS_FSS_TO_BB(mp, 1), 0); + if (!bp) + return -ENOMEM; + bp->b_ops = &xfs_sb_buf_ops; + xfs_buf_oneshot(bp); + *bpp = bp; + return 0; +} diff --git a/fs/xfs/libxfs/xfs_sb.h b/fs/xfs/libxfs/xfs_sb.h index 03e0cc6bf3a6..244e0162c49e 100644 --- a/fs/xfs/libxfs/xfs_sb.h +++ b/fs/xfs/libxfs/xfs_sb.h @@ -50,5 +50,8 @@ extern int xfs_fs_geometry(struct xfs_sb *sbp, struct xfs_fsop_geom *geo, extern int xfs_sb_read_secondary(struct xfs_mount *mp, struct xfs_trans *tp, xfs_agnumber_t agno, struct xfs_buf **bpp); +extern int xfs_sb_get_secondary(struct xfs_mount *mp, + struct xfs_trans *tp, xfs_agnumber_t agno, + struct xfs_buf **bpp); #endif /* __XFS_SB_H__ */ |