[XFS] superblock endianess annotations

Creates a new xfs_dsb_t that is __be annotated and keeps xfs_sb_t for the
incore one. xfs_xlatesb is renamed to xfs_sb_to_disk and only handles the
incore -> disk conversion. A new helper xfs_sb_from_disk handles the other
direction and doesn't need the slightly hacky table-driven approach
because we only ever read the full sb from disk.

The handling of shared r/o filesystems has been buggy on little endian
system and fixing this required shuffling around of some code in that
area.

SGI-PV: 968563
SGI-Modid: xfs-linux-melb:xfs-kern:29477a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 432e82347ed6..3d27909770ea 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -136,7 +136,6 @@ xfs_growfs_data_private(
         xfs_rfsblock_t          nfree;
         xfs_agnumber_t          oagcount;
         int                     pct;
-        xfs_sb_t                *sbp;
         xfs_trans_t             *tp;
 
         nb = in->newblocks;
@@ -377,8 +376,7 @@ xfs_growfs_data_private(
                                 error, agno);
                         break;
                 }
-                sbp = XFS_BUF_TO_SBP(bp);
-                xfs_xlatesb(sbp, &mp->m_sb, -1, XFS_SB_ALL_BITS);
+                xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS);
                 /*
                  * If we get an error writing out the alternate superblocks,
                  * just issue a warning and continue.  The real work is