commit bf39c00a9a7f3cdb5ce7d6695d9f044daf8f0b53
author Jaegeuk Kim <jaegeuk.kim@samsung.com> Wed Jan 22 20:41:57 2014 +0900
committer Jaegeuk Kim <jaegeuk.kim@samsung.com> Thu Jan 23 08:04:21 2014 +0900
tree 7dc60525c2b7e2dc24d2858395c7443b9e39907c
parent 4ef51a8fcc7c54ca3ad948a8b4310b3bd5490c72

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>

fs/f2fs/node.c

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 @@
 	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);
 }