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| author | Andrew Morton <akpm@zip.com.au> | 2002-07-18 21:09:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@home.transmeta.com> | 2002-07-18 21:09:02 -0700 |
| commit | 6a2ea3382b534e937ba2153f4a0c6021e04a1ef5 (patch) | |
| tree | ee967db238da26f5335651871b04ff1b3a75594e /include/linux/root_dev.h | |
| parent | fa08cc8377bf0942822c468cf26581012e69c9c9 (diff) | |
[PATCH] avoid allocating pte_chains for unshared pages
Patch from David McCracken. It is an optimisation to the rmap
pte_chains.
In the common case where a page is mapped by only a single pte, we
don't need to allocate a pte_chain structure. Just make the page's
pte_chain pointer point straight at that pte and flag this with
PG_direct.
Diffstat (limited to 'include/linux/root_dev.h')
0 files changed, 0 insertions, 0 deletions