On Wed 29-05-13 21:49:38, Haicheng Li wrote:
> Functions not used globally should be static.
I agree for wb_do_writeback(). You definitely shouldn't make
writeback_inodes_sb_nr() static, that it part of generic writeback API
(although it is currently unused, I agree). I'm somewhat undecided about
writeback_inodes_wb() - it may be handy for someone wanting to write out
everything on the bdi and it is a sane interface, OTOH it is unused as you
say and not exporting it wouldn't break consistency of the API...
Honza
>
> Signed-off-by: Haicheng Li <haicheng.li@xxxxxxxxxxxxxxx>
> ---
> fs/fs-writeback.c | 7 +++----
> include/linux/writeback.h | 5 -----
> 2 files changed, 3 insertions(+), 9 deletions(-)
>
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index 3be5718..1d66062 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -719,7 +719,7 @@ static long __writeback_inodes_wb(struct bdi_writeback *wb,
> return wrote;
> }
>
> -long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages,
> +static long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages,
> enum wb_reason reason)
> {
> struct wb_writeback_work work = {
> @@ -959,7 +959,7 @@ static long wb_check_old_data_flush(struct bdi_writeback *wb)
> /*
> * Retrieve work items and do the writeback they describe
> */
> -long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
> +static long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
> {
> struct backing_dev_info *bdi = wb->bdi;
> struct wb_writeback_work *work;
> @@ -1269,7 +1269,7 @@ static void wait_sb_inodes(struct super_block *sb)
> * on how many (if any) will be written, and this function does not wait
> * for IO completion of submitted IO.
> */
> -void writeback_inodes_sb_nr(struct super_block *sb,
> +static void writeback_inodes_sb_nr(struct super_block *sb,
> unsigned long nr,
> enum wb_reason reason)
> {
> @@ -1289,7 +1289,6 @@ void writeback_inodes_sb_nr(struct super_block *sb,
> bdi_queue_work(sb->s_bdi, &work);
> wait_for_completion(&done);
> }
> -EXPORT_SYMBOL(writeback_inodes_sb_nr);
>
> /**
> * writeback_inodes_sb - writeback dirty inodes from given super_block
> diff --git a/include/linux/writeback.h b/include/linux/writeback.h
> index 579a500..ba3de47 100644
> --- a/include/linux/writeback.h
> +++ b/include/linux/writeback.h
> @@ -86,15 +86,10 @@ struct writeback_control {
> struct bdi_writeback;
> int inode_wait(void *);
> 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);
> int try_to_writeback_inodes_sb(struct super_block *, enum wb_reason reason);
> int try_to_writeback_inodes_sb_nr(struct super_block *, unsigned long nr,
> enum wb_reason reason);
> void sync_inodes_sb(struct super_block *);
> -long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages,
> - enum wb_reason reason);
> -long wb_do_writeback(struct bdi_writeback *wb, int force_wait);
> void wakeup_flusher_threads(long nr_pages, enum wb_reason reason);
> void inode_wait_for_writeback(struct inode *inode);
>
> --
> 1.7.9.5
>
> --
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--
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
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