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[PATCH] io-accounting: write-cancel accounting

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Account for the number of byte writes which this process caused to not happen
after all.

Cc: Jay Lan <[email protected]>
Cc: Shailabh Nagar <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Chris Sturtivant <[email protected]>
Cc: Tony Ernst <[email protected]>
Cc: Guillaume Thouvenin <[email protected]>
Cc: David Wright <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrew Morton 2006-12-10 02:19:31 -08:00 • committed by Linus Torvalds
commit e08748ce01
2 changed files with 9 additions and 2 deletions
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4
mm/truncate.c
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@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/pagevec.h>
#include <linux/task_io_accounting_ops.h>
#include <linux/buffer_head.h> /* grr. try_to_release_page,
do_invalidatepage */
@ -69,7 +70,8 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
if (PagePrivate(page))
do_invalidatepage(page, 0);
clear_page_dirty(page);
if (test_clear_page_dirty(page))
task_io_account_cancelled_write(PAGE_CACHE_SIZE);
ClearPageUptodate(page);
ClearPageMappedToDisk(page);
remove_from_page_cache(page);