Commit c27753d6 authored by Jaegeuk Kim's avatar Jaegeuk Kim
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f2fs: flush dirty pages before starting atomic writes 



If somebody wrote some data before atomic writes, we should flush them in order
to handle atomic data in a right period.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 63c52d78

fs/f2fs/file.c

+10 −1
Original line number Diff line number Diff line
@@ -1369,7 +1369,16 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) 
	set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);

	f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);



	if (!get_dirty_pages(inode))

		return 0;



	f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,

		"Unexpected flush for atomic writes: ino=%lu, npages=%u",

					inode->i_ino, get_dirty_pages(inode));

	ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);

	if (ret)

		clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);

	return ret;

}



static int f2fs_ioc_commit_atomic_write(struct file *filp)