linux/block
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
..
as-iosched.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
blktrace.c [PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_private 2006-09-27 08:26:17 -07:00
cfq-iosched.c [PATCH] cfq_cic_link: fix usage of wrong cfq_io_context 2006-08-21 10:02:54 +02:00
deadline-iosched.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
elevator.c elv_unregister: fix possible crash on module unload 2006-08-22 12:52:23 -07:00
genhd.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ioctl.c [PATCH] lockdep: annotate the BLKPG_DEL_PARTITION ioctl 2006-07-14 21:53:53 -07:00
Kconfig [PATCH] config: fix CONFIG_LFS option 2006-03-31 12:18:55 -08:00
Kconfig.iosched [PATCH] Make CFQ the default IO scheduler 2006-06-23 17:10:39 +02:00
ll_rw_blk.c Merge mulgrave-w:git/linux-2.6 2006-09-23 21:03:52 -05:00
Makefile [PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23 2006-03-23 20:00:26 +01:00
noop-iosched.c [PATCH] elevator switching race 2006-06-08 15:14:23 -07:00
scsi_ioctl.c [SCSI] unify SCSI_IOCTL_SEND_COMMAND implementations 2006-04-13 10:13:15 -05:00