On Mon 09-10-17 13:34:41, Rakesh Pandit wrote:
> Since commit 925a6efb8ff0c ("Btrfs: stop using
> try_to_writeback_inodes_sb_nr to flush delalloc") this function hasn't
> been used outside so stop exporting it.
>
> In addition we merge it into try_to_writeback_inodes_sb() which is the
> only caller. Also change return type of try_to_writeback_inodes_sb to
> void as the only user ext4 doesn't care.
>
> Signed-off-by: Rakesh Pandit <rakesh@xxxxxxxxxx>
Looks good. You can add:
Reviewed-by: Jan Kara <jack@xxxxxxx>
Honza
> ---
> fs/fs-writeback.c | 30 ++++++------------------------
> include/linux/writeback.h | 4 +---
> 2 files changed, 7 insertions(+), 27 deletions(-)
>
> V2: Merge into only caller, change return type and adjust docs a bit
>
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index 9e24d60..08f5deb 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -2376,37 +2376,19 @@ void writeback_inodes_sb(struct super_block *sb, enum wb_reason reason)
> EXPORT_SYMBOL(writeback_inodes_sb);
>
> /**
> - * try_to_writeback_inodes_sb_nr - try to start writeback if none underway
> + * try_to_writeback_inodes_sb - try to start writeback if none underway
> * @sb: the superblock
> - * @nr: the number of pages to write
> - * @reason: the reason of writeback
> + * @reason: reason why some writeback work was initiated
> *
> - * Invoke writeback_inodes_sb_nr if no writeback is currently underway.
> - * Returns 1 if writeback was started, 0 if not.
> + * Invoke __writeback_inodes_sb_nr if no writeback is currently underway.
> */
> -bool try_to_writeback_inodes_sb_nr(struct super_block *sb, unsigned long nr,
> - enum wb_reason reason)
> +void try_to_writeback_inodes_sb(struct super_block *sb, enum wb_reason reason)
> {
> if (!down_read_trylock(&sb->s_umount))
> - return false;
> + return;
>
> - __writeback_inodes_sb_nr(sb, nr, reason, true);
> + __writeback_inodes_sb_nr(sb, get_nr_dirty_pages(), reason, true);
> up_read(&sb->s_umount);
> - return true;
> -}
> -EXPORT_SYMBOL(try_to_writeback_inodes_sb_nr);
> -
> -/**
> - * try_to_writeback_inodes_sb - try to start writeback if none underway
> - * @sb: the superblock
> - * @reason: reason why some writeback work was initiated
> - *
> - * Implement by try_to_writeback_inodes_sb_nr()
> - * Returns 1 if writeback was started, 0 if not.
> - */
> -bool try_to_writeback_inodes_sb(struct super_block *sb, enum wb_reason reason)
> -{
> - return try_to_writeback_inodes_sb_nr(sb, get_nr_dirty_pages(), reason);
> }
> EXPORT_SYMBOL(try_to_writeback_inodes_sb);
>
> diff --git a/include/linux/writeback.h b/include/linux/writeback.h
> index dd1d2c2..e15ec14 100644
> --- a/include/linux/writeback.h
> +++ b/include/linux/writeback.h
> @@ -163,9 +163,7 @@ struct bdi_writeback;
> void writeback_inodes_sb(struct super_block *, enum wb_reason reason);
> void writeback_inodes_sb_nr(struct super_block *, unsigned long nr,
> enum wb_reason reason);
> -bool try_to_writeback_inodes_sb(struct super_block *, enum wb_reason reason);
> -bool try_to_writeback_inodes_sb_nr(struct super_block *, unsigned long nr,
> - enum wb_reason reason);
> +void try_to_writeback_inodes_sb(struct super_block *sb, enum wb_reason reason);
> void sync_inodes_sb(struct super_block *);
> void wakeup_flusher_threads(enum wb_reason reason);
> void wakeup_flusher_threads_bdi(struct backing_dev_info *bdi,
> --
> 2.5.5
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
