From: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Date: Wed, 22 Jan 2014 11:41:57 +0000 (+0900)
Subject: f2fs: drop obsolete node page when it is truncated
X-Git-Tag: upstream/snapshot3+hdmi~3600^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bf39c00a9a7f3cdb5ce7d6695d9f044daf8f0b53;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

f2fs: drop obsolete node page when it is truncated

If a node page is trucated, we'd better drop the page in the node_inode's page
cache for better memory footprint.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
---

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index bbfc655..b0649b7 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -518,6 +518,10 @@ invalidate:
 	F2FS_SET_SB_DIRT(sbi);
 
 	f2fs_put_page(dn->node_page, 1);
+
+	invalidate_mapping_pages(NODE_MAPPING(sbi),
+			dn->node_page->index, dn->node_page->index);
+
 	dn->node_page = NULL;
 	trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr);
 }