On thu, 8 Dec 2011 10:04:34 -0800, Kamal Mostafa wrote:
> /**
> - * writeback_inodes_sb_if_idle - start writeback if none underway
> + * try_to_writeback_inodes_sb_nr - start writeback if none underway
> * @sb: the superblock
> * @nr: the number of pages to write
> *
> * Invoke writeback_inodes_sb if no writeback is currently underway.
> * Returns 1 if writeback was started, 0 if not.
> */
> -int writeback_inodes_sb_nr_if_idle(struct super_block *sb,
> +int try_to_writeback_inodes_sb_nr(struct super_block *sb,
> unsigned long nr,
> enum wb_reason reason)
> {
> if (!writeback_in_progress(sb->s_bdi)) {
> down_read(&sb->s_umount);
> - writeback_inodes_sb_nr(sb, nr, reason);
> + if (nr == 0)
> + writeback_inodes_sb(sb, reason);
> + else
> + writeback_inodes_sb_nr(sb, nr, reason);
> up_read(&sb->s_umount);
> return 1;
> } else
> return 0;
The comment said "Returns 1 if writeback was started", so if writeback_in_progress()
return true, I think this function also should return 1.
BTW: Does anyone know when this patchset will be merged into the main tree?
Thanks
Miao
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