From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Wed, 19 Nov 2014 19:03:34 +0000 (-0800)
Subject: f2fs: write SSA pages under memory pressure
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=857dc4e0598e2a95b1cbb8d17c8538b34cc9a2f3;p=deliverable%2Flinux.git

f2fs: write SSA pages under memory pressure

Under memory pressure, we don't need to skip SSA page writes.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 838e8ed3d13a..20a917b05b99 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -178,7 +178,7 @@ static int f2fs_write_meta_page(struct page *page,
 
 	if (unlikely(sbi->por_doing))
 		goto redirty_out;
-	if (wbc->for_reclaim)
+	if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
 		goto redirty_out;
 	if (unlikely(f2fs_cp_error(sbi)))
 		goto redirty_out;
@@ -187,6 +187,9 @@ static int f2fs_write_meta_page(struct page *page,
 	write_meta_page(sbi, page);
 	dec_page_count(sbi, F2FS_DIRTY_META);
 	unlock_page(page);
+
+	if (wbc->for_reclaim)
+		f2fs_submit_merged_bio(sbi, META, WRITE);
 	return 0;
 
 redirty_out: