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authorEdward Shishkin <edward.shishkin@gmail.com>2009-03-31 15:19:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-01 08:59:12 -0700
commite3a7cca1ef4c1af9b0acef9bd66eff6582a737b5 (patch)
tree717097ec82ce0de55e44b2fe3e35fa041e5169b2 /mm
parentbd2f6199cf9af472aeefa1b642c9f504f19e6008 (diff)
vfs: add/use account_page_dirtied()
Add a helper function account_page_dirtied(). Use that from two callsites. reiser4 adds a function which adds a third callsite. Signed-off-by: Edward Shishkin<edward.shishkin@gmail.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/page-writeback.c22
1 files changed, 15 insertions, 7 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 40ca7cdb653..6aa92b03c74 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1198,6 +1198,20 @@ int __set_page_dirty_no_writeback(struct page *page)
}
/*
+ * Helper function for set_page_dirty family.
+ * NOTE: This relies on being atomic wrt interrupts.
+ */
+void account_page_dirtied(struct page *page, struct address_space *mapping)
+{
+ if (mapping_cap_account_dirty(mapping)) {
+ __inc_zone_page_state(page, NR_FILE_DIRTY);
+ __inc_bdi_stat(mapping->backing_dev_info, BDI_RECLAIMABLE);
+ task_dirty_inc(current);
+ task_io_account_write(PAGE_CACHE_SIZE);
+ }
+}
+
+/*
* For address_spaces which do not use buffers. Just tag the page as dirty in
* its radix tree.
*
@@ -1226,13 +1240,7 @@ int __set_page_dirty_nobuffers(struct page *page)
if (mapping2) { /* Race with truncate? */
BUG_ON(mapping2 != mapping);
WARN_ON_ONCE(!PagePrivate(page) && !PageUptodate(page));
- if (mapping_cap_account_dirty(mapping)) {
- __inc_zone_page_state(page, NR_FILE_DIRTY);
- __inc_bdi_stat(mapping->backing_dev_info,
- BDI_RECLAIMABLE);
- task_dirty_inc(current);
- task_io_account_write(PAGE_CACHE_SIZE);
- }
+ account_page_dirtied(page, mapping);
radix_tree_tag_set(&mapping->page_tree,
page_index(page), PAGECACHE_TAG_DIRTY);
}