On 04/06, Chao Yu wrote:
> Hi Jaegeuk,
>
> On 2017/4/6 2:02, Jaegeuk Kim wrote:
> > This patch fixes # of outstanding writeback pages by checking its original
> > page.
>
> Originally, we use bio_page to track encrypted page which is been writebacked,
> there are two cases:
> 1. background flush through .writepages: encrypted_page has no mapping info,
> will not be tracked.
> 2. synchronized GC through move_encrypted_block: encrypted_page is meta page,
> will be tracked.
>
> So there is no problem with old code?
Consistency was fine, but why not tracking # of writebacked pages for encryption
case?
Thanks,
>
> Thanks,
>
> >
> > Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
> > ---
> > fs/f2fs/data.c | 7 +++----
> > 1 file changed, 3 insertions(+), 4 deletions(-)
> >
> > diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> > index 3d74c0ffa4c7..af3e849e96d2 100644
> > --- a/fs/f2fs/data.c
> > +++ b/fs/f2fs/data.c
> > @@ -94,7 +94,6 @@ static void f2fs_write_end_io(struct bio *bio)
> >
> > bio_for_each_segment_all(bvec, bio, i) {
> > struct page *page = bvec->bv_page;
> > - enum count_type type = WB_DATA_TYPE(page);
> >
> > if (IS_DUMMY_WRITTEN_PAGE(page)) {
> > set_page_private(page, (unsigned long)NULL);
> > @@ -113,7 +112,7 @@ static void f2fs_write_end_io(struct bio *bio)
> > mapping_set_error(page->mapping, -EIO);
> > f2fs_stop_checkpoint(sbi, true);
> > }
> > - dec_page_count(sbi, type);
> > + dec_page_count(sbi, WB_DATA_TYPE(page));
> > clear_cold_data(page);
> > end_page_writeback(page);
> > }
> > @@ -389,7 +388,7 @@ int f2fs_submit_page_mbio(struct f2fs_io_info *fio)
> > fio->submitted = 1;
> >
> > if (!is_read)
> > - inc_page_count(sbi, WB_DATA_TYPE(bio_page));
> > + inc_page_count(sbi, WB_DATA_TYPE(fio->page));
> >
> > down_write(&io->io_rwsem);
> >
> > @@ -403,7 +402,7 @@ int f2fs_submit_page_mbio(struct f2fs_io_info *fio)
> > fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) {
> > err = -EAGAIN;
> > if (!is_read)
> > - dec_page_count(sbi, WB_DATA_TYPE(bio_page));
> > + dec_page_count(sbi, WB_DATA_TYPE(fio->page));
> > goto out_fail;
> > }
> > io->bio = __bio_alloc(sbi, fio->new_blkaddr,
> >
