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xfs: fix unaligned access in xfs_btree_visit_blocks

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commit a4d768e702de224cc85e0c8eac9311763403b368 upstream.

This structure copy was throwing unaligned access warnings on sparc64:

Kernel unaligned access at TPC[1043c088] xfs_btree_visit_blocks+0x88/0xe0 [xfs]

xfs_btree_copy_ptrs does a memcpy, which avoids it.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eric Sandeen 2017-05-22 19:54:10 -07:00 committed by Greg Kroah-Hartman
parent 7fb8ab8f0a
commit 75c5afd58d
1 changed files with 1 additions and 1 deletions
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2
fs/xfs/libxfs/xfs_btree.c
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@ -4376,7 +4376,7 @@ xfs_btree_visit_blocks(
xfs_btree_readahead_ptr(cur, ptr, 1);
/* save for the next iteration of the loop */
lptr = *ptr;
xfs_btree_copy_ptrs(cur, &lptr, ptr, 1);
}
/* for each buffer in the level */