linux/arch/s390
Theodore Ts'o 8e18e2941c [PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_private
The following patches reduce the size of the VFS inode structure by 28 bytes
on a UP x86.  (It would be more on an x86_64 system).  This is a 10% reduction
in the inode size on a UP kernel that is configured in a production mode
(i.e., with no spinlock or other debugging functions enabled; if you want to
save memory taken up by in-core inodes, the first thing you should do is
disable the debugging options; they are responsible for a huge amount of bloat
in the VFS inode structure).

This patch:

The filesystem or device-specific pointer in the inode is inside a union,
which is pretty pointless given that all 30+ users of this field have been
using the void pointer.  Get rid of the union and rename it to i_private, with
a comment to explain who is allowed to use the void pointer.  This is just a
cleanup, but it allows us to reuse the union 'u' for something something where
the union will actually be used.

[judith@osdl.org: powerpc build fix]
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Judith Lebzelter <judith@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27 08:26:17 -07:00
..
appldata [PATCH] reduce MAX_NR_ZONES: remove display of counters for unconfigured zones 2006-09-26 08:48:47 -07:00
boot [PATCH] use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh 2005-06-23 09:45:07 -07:00
crypto [CRYPTO] drivers: Remove obsolete block cipher operations 2006-09-21 11:46:16 +10:00
hypfs [PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_private 2006-09-27 08:26:17 -07:00
kernel [PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_private 2006-09-27 08:26:17 -07:00
lib [S390] Use alternative user-copy operations for new hardware. 2006-09-20 15:59:44 +02:00
math-emu Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
mm [PATCH] s390: fix cmm kernel thread handling 2006-09-26 08:49:11 -07:00
oprofile [PATCH] s390: add oprofile callgraph support 2006-01-06 08:33:50 -08:00
defconfig [S390] Linux API for writing z/VM APPLDATA Monitor records. 2006-09-20 15:59:34 +02:00
Kconfig [S390] Remove kexec experimental flag. 2006-09-20 15:59:29 +02:00
Kconfig.debug [PATCH] lockdep: irqtrace subsystem, s390 support 2006-07-03 15:27:03 -07:00
Makefile [PATCH] lockdep: s390 CONFIG_FRAME_POINTER support 2006-07-03 15:27:02 -07:00