f2fs: don't keep meta pages used for block migration (18767e62) · Commits · 戴 / test

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>

fs/f2fs/checkpoint.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -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);

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