A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 03:27:44 -04:00
Code Issues Projects Releases Packages Wiki Activity

mmap: handle mlocked pages during map, remap, unmap

Browse source 
Originally by Nick Piggin <[email protected]>

Remove mlocked pages from the LRU using "unevictable infrastructure"
during mmap(), munmap(), mremap() and truncate().  Try to move back to
normal LRU lists on munmap() when last mlocked mapping removed.  Remove
PageMlocked() status when page truncated from file.

[[email protected]: cleanup]
[[email protected]: fix double unlock_page()]
[[email protected]: split LRU: munlock rework]
[[email protected]: mlock: fix __mlock_vma_pages_range comment block]
[[email protected]: remove bogus kerneldoc token]
Signed-off-by: Nick Piggin <[email protected]>
Signed-off-by: Lee Schermerhorn <[email protected]>
Signed-off-by: Rik van Riel <[email protected]>
Signed-off-by: KOSAKI Motohiro <[email protected]>
Signed-off-by: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Rik van Riel 2008-10-18 20:26:50 -07:00 • committed by Linus Torvalds
commit ba470de431
6 changed files with 180 additions and 160 deletions
Download patch file Download diff file Expand all files Collapse all files

4
mm/truncate.c
View file

@ -18,6 +18,7 @@
#include <linux/task_io_accounting_ops.h>
#include <linux/buffer_head.h> /* grr. try_to_release_page,
do_invalidatepage */
#include "internal.h"
/**
@ -103,6 +104,7 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
cancel_dirty_page(page, PAGE_CACHE_SIZE);
clear_page_mlock(page);
remove_from_page_cache(page);
ClearPageMappedToDisk(page);
page_cache_release(page); /* pagecache ref */
@ -127,6 +129,7 @@ invalidate_complete_page(struct address_space *mapping, struct page *page)
if (PagePrivate(page) && !try_to_release_page(page, 0))
return 0;
clear_page_mlock(page);
ret = remove_mapping(mapping, page);
return ret;
@ -352,6 +355,7 @@ invalidate_complete_page2(struct address_space *mapping, struct page *page)
if (PageDirty(page))
goto failed;
clear_page_mlock(page);
BUG_ON(PagePrivate(page));
__remove_from_page_cache(page);
spin_unlock_irq(&mapping->tree_lock);