Commit 5f2a105d authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds

[PATCH] truncate: dirty memory accounting fix

Only (un)account for IO and page-dirtying for devices which have real backing
store (ie: not tmpfs or ramdisks).

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent bb4067e3
......@@ -60,7 +60,8 @@ void cancel_dirty_page(struct page *page, unsigned int account_size)
WARN_ON(++warncount < 5);
}
if (TestClearPageDirty(page) && account_size) {
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);
}
......
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