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Commit 9c7bb702 authored by Changman Lee's avatar Changman Lee Committed by Jaegeuk Kim
Browse files

f2fs: check if inode state is dirty at fsync 



If inode state is dirty, go straight to write.

Suggested-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: default avatarChangman Lee <cm224.lee@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 8dcf2ff7

fs/f2fs/file.c

+19 −6
Original line number Diff line number Diff line
@@ -138,6 +138,17 @@ static inline bool need_do_checkpoint(struct inode *inode) 
	return need_cp;

}



static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)

{

	struct page *i = find_get_page(NODE_MAPPING(sbi), ino);

	bool ret = false;

	/* But we need to avoid that there are some inode updates */

	if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino))

		ret = true;

	f2fs_put_page(i, 0);

	return ret;

}



int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)

{

	struct inode *inode = file->f_mapping->host;
@@ -168,19 +179,21 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) 
		return ret;

	}



	/* if the inode is dirty, let's recover all the time */

	if (!datasync && is_inode_flag_set(fi, FI_DIRTY_INODE)) {

		update_inode_page(inode);

		goto go_write;

	}



	/*

	 * if there is no written data, don't waste time to write recovery info.

	 */

	if (!is_inode_flag_set(fi, FI_APPEND_WRITE) &&

			!exist_written_data(sbi, ino, APPEND_INO)) {

		struct page *i = find_get_page(NODE_MAPPING(sbi), ino);



		/* But we need to avoid that there are some inode updates */

		if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) {

			f2fs_put_page(i, 0);

		/* it may call write_inode just prior to fsync */

		if (need_inode_page_update(sbi, ino))

			goto go_write;

		}

		f2fs_put_page(i, 0);



		if (is_inode_flag_set(fi, FI_UPDATE_WRITE) ||

				exist_written_data(sbi, ino, UPDATE_INO))