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authorEric Sandeen <sandeen@redhat.com>2016-03-02 01:58:09 +0300
committerDave Chinner <david@fromorbit.com>2016-03-02 01:58:09 +0300
commit12c3f05c7b592ae3bf2219392f1cbf252645cd79 (patch)
tree84d13db49ec7de70cee1ae873c3f05e9e89b3fe2 /fs/xfs/xfs_mount.c
parent5d518bd6cec6f921ee1be504094762496afb45fb (diff)
downloadlinux-12c3f05c7b592ae3bf2219392f1cbf252645cd79.tar.xz
xfs: fix up inode32/64 (re)mount handling
inode32/inode64 allocator behavior with respect to mount, remount and growfs is a little tricky. The inode32 mount option should only enable the inode32 allocator heuristics if the filesystem is large enough for 64-bit inodes to exist. Today, it has this behavior on the initial mount, but a remount with inode32 unconditionally changes the allocation heuristics, even for a small fs. Also, an inode32 mounted small filesystem should transition to the inode32 allocator if the filesystem is subsequently grown to a sufficient size. Today that does not happen. This patch consolidates xfs_set_inode32 and xfs_set_inode64 into a single new function, and moves the "is the maximum inode number big enough to matter" test into that function, so it doesn't rely on the caller to get it right - which remount did not do, previously. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_mount.c')
-rw-r--r--fs/xfs/xfs_mount.c20
1 files changed, 1 insertions, 19 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index bb753b359bee..a773ef33f559 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -185,9 +185,6 @@ xfs_initialize_perag(
xfs_agnumber_t index;
xfs_agnumber_t first_initialised = 0;
xfs_perag_t *pag;
- xfs_agino_t agino;
- xfs_ino_t ino;
- xfs_sb_t *sbp = &mp->m_sb;
int error = -ENOMEM;
/*
@@ -230,22 +227,7 @@ xfs_initialize_perag(
radix_tree_preload_end();
}
- /*
- * If we mount with the inode64 option, or no inode overflows
- * the legacy 32-bit address space clear the inode32 option.
- */
- agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0);
- ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino);
-
- if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32)
- mp->m_flags |= XFS_MOUNT_32BITINODES;
- else
- mp->m_flags &= ~XFS_MOUNT_32BITINODES;
-
- if (mp->m_flags & XFS_MOUNT_32BITINODES)
- index = xfs_set_inode32(mp, agcount);
- else
- index = xfs_set_inode64(mp, agcount);
+ index = xfs_set_inode_alloc(mp, agcount);
if (maxagi)
*maxagi = index;