commit 2dafe1c4d69345539735cca64250f2d4657bd057
author Eric Sandeen <sandeen@redhat.com> Fri Feb 08 04:22:12 2008 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> Fri Feb 08 09:22:44 2008 -0800
tree a156663f7963869b6f4d6cd4afcc141064fc0329
parent ac2a659968f5318a180213f0409c2ea21f072820

reduce large do_mount stack usage with noinlines

do_mount() uses a whopping 616 bytes of stack on x86_64 in 2.6.24-mm1,
largely thanks to gcc inlining the various helper functions.

noinlining these can slim it down a lot; on my box this patch gets it down
to 168, which is mostly the struct nameidata nd; left on the stack.

These functions are called only as do_mount() helpers; none of them should
be in any path that would see a performance benefit from inlining...

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>