[PATCH] misc fixes

[PATCH] misc fixes

- shmem: remove unneeded test for null inode->i_sb (James Morris)

- kill unused var warning in traps.c (Geert Uytterhoeven)

- s/u64/__u64/ in bitops.h (needed for klibc)

- comment fix in gfp.h (Matthew Dobson <colpatch@us.ibm.com>)

- fix smbfs constant overflow warning (Flameeyes <daps_mls@libero.it>)

- yam.c irqreturn_t fix.

- Remove some unused variables from baycom_epp.c (Adrian Bunk)

- Remove 5-year-old unreferenced RCS string from xirc2ps_cs.c (Adrian Bunk)