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xfs: byteswap constants instead of variables

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Micro-optimize various comparisms by always byteswapping the constant
instead of the variable, which allows to do the swap at compile instead
of runtime.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Christoph Hellwig
2011-07-08 14:36:05 +02:00
parent 218106a110
commit 69ef921b55
15 changed files with 208 additions and 197 deletions
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fs/xfs/xfs_bmap.c
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@ -4083,7 +4083,7 @@ xfs_bmap_sanity_check(
{
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
if (be32_to_cpu(block->bb_magic) != XFS_BMAP_MAGIC ||
if (block->bb_magic != cpu_to_be32(XFS_BMAP_MAGIC) ||
be16_to_cpu(block->bb_level) != level ||
be16_to_cpu(block->bb_numrecs) == 0 ||
be16_to_cpu(block->bb_numrecs) > mp->m_bmap_dmxr[level != 0])