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authorChristoph Hellwig <hch@lst.de>2011-07-08 16:36:05 +0400
committerChristoph Hellwig <hch@lst.de>2011-07-08 16:36:05 +0400
commit69ef921b55cc3788d1d2a27b33b27d04acd0090a (patch)
treebcc7c1f4b7f15628f122dfdb96f8d4d37f587e92 /fs/xfs/xfs_alloc.c
parent218106a1104c598011e5df9d9aac7e0416be03e6 (diff)
downloadlinux-69ef921b55cc3788d1d2a27b33b27d04acd0090a.tar.xz
xfs: byteswap constants instead of variables
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>
Diffstat (limited to 'fs/xfs/xfs_alloc.c')
-rw-r--r--fs/xfs/xfs_alloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index 95862bbff56b..3ad3ab9f56cb 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -2127,7 +2127,7 @@ xfs_read_agf(
* Validate the magic number of the agf block.
*/
agf_ok =
- be32_to_cpu(agf->agf_magicnum) == XFS_AGF_MAGIC &&
+ agf->agf_magicnum == cpu_to_be32(XFS_AGF_MAGIC) &&
XFS_AGF_GOOD_VERSION(be32_to_cpu(agf->agf_versionnum)) &&
be32_to_cpu(agf->agf_freeblks) <= be32_to_cpu(agf->agf_length) &&
be32_to_cpu(agf->agf_flfirst) < XFS_AGFL_SIZE(mp) &&