Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8368e328dfe1c534957051333a87b3210a12743b
Commit: 8368e328dfe1c534957051333a87b3210a12743b
Parent: 18ed1c051317ac3a685120cead2adb192b802347
Author: Linus Torvalds <[EMAIL PROTECTED]>
AuthorDate: Sat Dec 23 09:25:04 2006 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Sat Dec 23 09:25:04 2006 -0800
Clean up and export cancel_dirty_page() to modules
Make cancel_dirty_page() act more like all the other dirty and writeback
accounting functions: test for "mapping" being NULL, and do the
NR_FILE_DIRY accounting purely based on mapping_cap_account_dirty()).
Also, add it to the exports, so that modular filesystems can use it.
Acked-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
mm/truncate.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/mm/truncate.c b/mm/truncate.c
index 4a38dd1..ecdfdcc 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -60,12 +60,16 @@ void cancel_dirty_page(struct page *page, unsigned int
account_size)
WARN_ON(++warncount < 5);
}
- if (TestClearPageDirty(page) && account_size &&
- mapping_cap_account_dirty(page->mapping)) {
- dec_zone_page_state(page, NR_FILE_DIRTY);
- task_io_account_cancelled_write(account_size);
+ if (TestClearPageDirty(page)) {
+ struct address_space *mapping = page->mapping;
+ if (mapping && mapping_cap_account_dirty(mapping)) {
+ dec_zone_page_state(page, NR_FILE_DIRTY);
+ if (account_size)
+ task_io_account_cancelled_write(account_size);
+ }
}
}
+EXPORT_SYMBOL(cancel_dirty_page);
/*
* If truncate cannot remove the fs-private metadata from the page, the page
-
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