kernel-ark/include
Al Viro f8e08a8466 [PATCH] reiserfs endianness: sanitize reiserfs_key union
Since we only access reiserfs_key ->u.k_offset_v2 guts in four helper
functions, we are free to sanitize those, as long as

- layout of the structure is unchanged (it's on-disk object)

- behaviour of these helpers is same as before.

Patch kills the mess with endianness-dependent bitfields and replaces them
with a single __le64.  Helpers are switched to straightforward shift/and/or.

Benefits:

- exact same definitions for little- and big-endian architectures; no ifdefs
  in sight.

- generate the same code on little-endian and improved on big-endian.

- doesn't rely on lousy bitfields handling in gcc codegenerator.

- happens to be standard C (unsigned long long is not a valid type for a
  bitfield; it's a gccism and not well-implemented one, at that).

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-01 08:59:19 -07:00
..
acpi
asm-alpha
asm-arm
asm-arm26
asm-cris
asm-frv
asm-generic
asm-h8300
asm-i386
asm-ia64
asm-m32r
asm-m68k
asm-m68knommu
asm-mips
asm-parisc
asm-ppc
asm-ppc64
asm-s390
asm-sh
asm-sh64
asm-sparc
asm-sparc64
asm-um
asm-v850
asm-x86_64
linux [PATCH] reiserfs endianness: sanitize reiserfs_key union 2005-05-01 08:59:19 -07:00
math-emu
media
mtd
net
pcmcia
rxrpc
scsi
sound
video