From 09bc4de4c933e93d0ca8f6ab748b22aec6e062b0 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 f3fabf992727..3c3429a99475 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -1408,6 +1408,14 @@ 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); -- 2.20.1