[XFS] Reduce complexity in xfs_trans_init by pushing complex macros out into functions and hence reduce the stack footprint there.
[XFS] Reduce complexity in xfs_trans_init by pushing complex macros out
into functions and hence reduce the stack footprint there.

SGI-PV: 947312
SGI-Modid: xfs-linux-melb:xfs-kern:25360a

Signed-off-by: Nathan Scott <e2e3f1f24cbc439f8c1ba9b08f9954237d64be64@sgi.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas