From ed523c069502dcd1084aa4fcfef62817c1c17f79 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Fri, 27 Jul 2018 18:15:13 +0800 Subject: [PATCH] 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 Signed-off-by: Jaegeuk Kim --- fs/f2fs/checkpoint.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index fb9529a7a02e..901d696dded7 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -1409,6 +1409,14 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) 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);