f2fs: don't keep meta pages used for block migration
For migration of encrypted inode's block, we load data of encrypted block
into meta inode's page cache, after checkpoint, those all intermediate
pages should be clean, and no one will read them again, so let's just
release them for more memory.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index f3fabf9..3c3429a 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1408,6 +1408,14 @@
commit_checkpoint(sbi, ckpt, start_blk);
wait_on_all_pages_writeback(sbi);
+ /*
+ * invalidate intermediate page cache borrowed from meta inode
+ * which are used for migration of encrypted inode's blocks.
+ */
+ if (f2fs_sb_has_encrypt(sbi->sb))
+ invalidate_mapping_pages(META_MAPPING(sbi),
+ MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1);
+
f2fs_release_ino_entry(sbi, false);
clear_sbi_flag(sbi, SBI_IS_DIRTY);