tree 616b7260196c9bd0eaf208ef8fab91fcf9efcece
parent 18f705f49a5b19206233f7cef8f869ce7291f8c8
author Alexey Dobriyan <adobriyan@gmail.com> 1171100805 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1171221487 -0800

[PATCH] ifdef ->rchar, ->wchar, ->syscr, ->syscw from task_struct

They are fat: 4x8 bytes in task_struct.
They are uncoditionally updated in every fork, read, write and sendfile.
They are used only if you have some "extended acct fields feature".

And please, please, please, read(2) knows about bytes, not characters,
why it is called "rchar"?

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jay Lan <jlan@engr.sgi.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>