From 061e97469f46f924cf14bbf1dd4805b46986691a Mon Sep 17 00:00:00 2001 From: OGAWA Hirofumi Date: Mon, 28 Apr 2008 02:16:28 -0700 Subject: [PATCH] Add balance_dirty_pages_ratelimited() to cont_expand_zero() On the systems, ftruncate() which expand size for FAT became the cause of OOM. The cont_expand_zero() filled all memory with dirty pages, and since disk is very slow, limit of page scanning was exceeded, then it triggered OOM. This adds balance_dirty_pages_ratelimited() to avoid filling memory with dirty pages. Signed-off-by: OGAWA Hirofumi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/buffer.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/buffer.c b/fs/buffer.c index 7d51e649b19a..3db4a26adc44 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -2246,6 +2246,8 @@ int cont_expand_zero(struct file *file, struct address_space *mapping, goto out; BUG_ON(err != len); err = 0; + + balance_dirty_pages_ratelimited(mapping); } /* page covers the boundary, find the boundary offset */ -- 2.20.1