| Message ID | 20221017202451.4951-9-vishal.moola@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Convert to filemap_get_folios_tag() | expand |
On Mon, 2022-10-17 at 13:24 -0700, Vishal Moola (Oracle) wrote: > Convert function to use a folio_batch instead of pagevec. This is in > preparation for the removal of find_get_pages_range_tag(). > > Also some minor renaming for consistency. > > Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> > --- > fs/ceph/addr.c | 58 ++++++++++++++++++++++++++------------------------ > 1 file changed, 30 insertions(+), 28 deletions(-) > > diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c > index dcf701b05cc1..d2361d51db39 100644 > --- a/fs/ceph/addr.c > +++ b/fs/ceph/addr.c > @@ -792,7 +792,7 @@ static int ceph_writepages_start(struct address_space *mapping, > struct ceph_vino vino = ceph_vino(inode); > pgoff_t index, start_index, end = -1; > struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc; > - struct pagevec pvec; > + struct folio_batch fbatch; > int rc = 0; > unsigned int wsize = i_blocksize(inode); > struct ceph_osd_request *req = NULL; > @@ -821,7 +821,7 @@ static int ceph_writepages_start(struct address_space *mapping, > if (fsc->mount_options->wsize < wsize) > wsize = fsc->mount_options->wsize; > > - pagevec_init(&pvec); > + folio_batch_init(&fbatch); > > start_index = wbc->range_cyclic ? mapping->writeback_index : 0; > index = start_index; > @@ -869,7 +869,7 @@ static int ceph_writepages_start(struct address_space *mapping, > > while (!done && index <= end) { > int num_ops = 0, op_idx; > - unsigned i, pvec_pages, max_pages, locked_pages = 0; > + unsigned i, nr_folios, max_pages, locked_pages = 0; > struct page **pages = NULL, **data_pages; > struct page *page; > pgoff_t strip_unit_end = 0; > @@ -879,13 +879,13 @@ static int ceph_writepages_start(struct address_space *mapping, > max_pages = wsize >> PAGE_SHIFT; > > get_more_pages: > - pvec_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, > - end, PAGECACHE_TAG_DIRTY); > - dout("pagevec_lookup_range_tag got %d\n", pvec_pages); > - if (!pvec_pages && !locked_pages) > + nr_folios = filemap_get_folios_tag(mapping, &index, > + end, PAGECACHE_TAG_DIRTY, &fbatch); > + dout("pagevec_lookup_range_tag got %d\n", nr_folios); > + if (!nr_folios && !locked_pages) > break; > - for (i = 0; i < pvec_pages && locked_pages < max_pages; i++) { > - page = pvec.pages[i]; > + for (i = 0; i < nr_folios && locked_pages < max_pages; i++) { > + page = &fbatch.folios[i]->page; > dout("? %p idx %lu\n", page, page->index); > if (locked_pages == 0) > lock_page(page); /* first page */ > @@ -995,7 +995,7 @@ static int ceph_writepages_start(struct address_space *mapping, > len = 0; > } > > - /* note position of first page in pvec */ > + /* note position of first page in fbatch */ > dout("%p will write page %p idx %lu\n", > inode, page, page->index); > > @@ -1005,30 +1005,30 @@ static int ceph_writepages_start(struct address_space *mapping, > fsc->write_congested = true; > > pages[locked_pages++] = page; > - pvec.pages[i] = NULL; > + fbatch.folios[i] = NULL; > > len += thp_size(page); > } > > /* did we get anything? */ > if (!locked_pages) > - goto release_pvec_pages; > + goto release_folios; > if (i) { > unsigned j, n = 0; > - /* shift unused page to beginning of pvec */ > - for (j = 0; j < pvec_pages; j++) { > - if (!pvec.pages[j]) > + /* shift unused page to beginning of fbatch */ > + for (j = 0; j < nr_folios; j++) { > + if (!fbatch.folios[j]) > continue; > if (n < j) > - pvec.pages[n] = pvec.pages[j]; > + fbatch.folios[n] = fbatch.folios[j]; > n++; > } > - pvec.nr = n; > + fbatch.nr = n; > > - if (pvec_pages && i == pvec_pages && > + if (nr_folios && i == nr_folios && > locked_pages < max_pages) { > - dout("reached end pvec, trying for more\n"); > - pagevec_release(&pvec); > + dout("reached end fbatch, trying for more\n"); > + folio_batch_release(&fbatch); > goto get_more_pages; > } > } > @@ -1164,10 +1164,10 @@ static int ceph_writepages_start(struct address_space *mapping, > if (wbc->nr_to_write <= 0 && wbc->sync_mode == WB_SYNC_NONE) > done = true; > > -release_pvec_pages: > - dout("pagevec_release on %d pages (%p)\n", (int)pvec.nr, > - pvec.nr ? pvec.pages[0] : NULL); > - pagevec_release(&pvec); > +release_folios: > + dout("folio_batch release on %d folios (%p)\n", (int)fbatch.nr, > + fbatch.nr ? fbatch.folios[0] : NULL); > + folio_batch_release(&fbatch); > } > > if (should_loop && !done) { > @@ -1184,15 +1184,17 @@ static int ceph_writepages_start(struct address_space *mapping, > unsigned i, nr; > index = 0; > while ((index <= end) && > - (nr = pagevec_lookup_tag(&pvec, mapping, &index, > - PAGECACHE_TAG_WRITEBACK))) { > + (nr = filemap_get_folios_tag(mapping, &index, > + (pgoff_t)-1, > + PAGECACHE_TAG_WRITEBACK, > + &fbatch))) { > for (i = 0; i < nr; i++) { > - page = pvec.pages[i]; > + page = &fbatch.folios[i]->page; > if (page_snap_context(page) != snapc) > continue; > wait_on_page_writeback(page); > } > - pagevec_release(&pvec); > + folio_batch_release(&fbatch); > cond_resched(); > } > } I took a brief look and this looks like a fairly straightforward conversion. It definitely needs testing however. The hope was to get ceph converted over to using the netfs write helpers, but that's taking a lot longer than expected. It's really up to Xiubo at this point, but I don't have an issue in principle with taking this patch in before the netfs conversion, particularly if it's blocking other work. Acked-by: Jeff Layton <jlayton@kernel.org>
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index dcf701b05cc1..d2361d51db39 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -792,7 +792,7 @@ static int ceph_writepages_start(struct address_space *mapping, struct ceph_vino vino = ceph_vino(inode); pgoff_t index, start_index, end = -1; struct ceph_snap_context *snapc = NULL, *last_snapc = NULL, *pgsnapc; - struct pagevec pvec; + struct folio_batch fbatch; int rc = 0; unsigned int wsize = i_blocksize(inode); struct ceph_osd_request *req = NULL; @@ -821,7 +821,7 @@ static int ceph_writepages_start(struct address_space *mapping, if (fsc->mount_options->wsize < wsize) wsize = fsc->mount_options->wsize; - pagevec_init(&pvec); + folio_batch_init(&fbatch); start_index = wbc->range_cyclic ? mapping->writeback_index : 0; index = start_index; @@ -869,7 +869,7 @@ static int ceph_writepages_start(struct address_space *mapping, while (!done && index <= end) { int num_ops = 0, op_idx; - unsigned i, pvec_pages, max_pages, locked_pages = 0; + unsigned i, nr_folios, max_pages, locked_pages = 0; struct page **pages = NULL, **data_pages; struct page *page; pgoff_t strip_unit_end = 0; @@ -879,13 +879,13 @@ static int ceph_writepages_start(struct address_space *mapping, max_pages = wsize >> PAGE_SHIFT; get_more_pages: - pvec_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, - end, PAGECACHE_TAG_DIRTY); - dout("pagevec_lookup_range_tag got %d\n", pvec_pages); - if (!pvec_pages && !locked_pages) + nr_folios = filemap_get_folios_tag(mapping, &index, + end, PAGECACHE_TAG_DIRTY, &fbatch); + dout("pagevec_lookup_range_tag got %d\n", nr_folios); + if (!nr_folios && !locked_pages) break; - for (i = 0; i < pvec_pages && locked_pages < max_pages; i++) { - page = pvec.pages[i]; + for (i = 0; i < nr_folios && locked_pages < max_pages; i++) { + page = &fbatch.folios[i]->page; dout("? %p idx %lu\n", page, page->index); if (locked_pages == 0) lock_page(page); /* first page */ @@ -995,7 +995,7 @@ static int ceph_writepages_start(struct address_space *mapping, len = 0; } - /* note position of first page in pvec */ + /* note position of first page in fbatch */ dout("%p will write page %p idx %lu\n", inode, page, page->index); @@ -1005,30 +1005,30 @@ static int ceph_writepages_start(struct address_space *mapping, fsc->write_congested = true; pages[locked_pages++] = page; - pvec.pages[i] = NULL; + fbatch.folios[i] = NULL; len += thp_size(page); } /* did we get anything? */ if (!locked_pages) - goto release_pvec_pages; + goto release_folios; if (i) { unsigned j, n = 0; - /* shift unused page to beginning of pvec */ - for (j = 0; j < pvec_pages; j++) { - if (!pvec.pages[j]) + /* shift unused page to beginning of fbatch */ + for (j = 0; j < nr_folios; j++) { + if (!fbatch.folios[j]) continue; if (n < j) - pvec.pages[n] = pvec.pages[j]; + fbatch.folios[n] = fbatch.folios[j]; n++; } - pvec.nr = n; + fbatch.nr = n; - if (pvec_pages && i == pvec_pages && + if (nr_folios && i == nr_folios && locked_pages < max_pages) { - dout("reached end pvec, trying for more\n"); - pagevec_release(&pvec); + dout("reached end fbatch, trying for more\n"); + folio_batch_release(&fbatch); goto get_more_pages; } } @@ -1164,10 +1164,10 @@ static int ceph_writepages_start(struct address_space *mapping, if (wbc->nr_to_write <= 0 && wbc->sync_mode == WB_SYNC_NONE) done = true; -release_pvec_pages: - dout("pagevec_release on %d pages (%p)\n", (int)pvec.nr, - pvec.nr ? pvec.pages[0] : NULL); - pagevec_release(&pvec); +release_folios: + dout("folio_batch release on %d folios (%p)\n", (int)fbatch.nr, + fbatch.nr ? fbatch.folios[0] : NULL); + folio_batch_release(&fbatch); } if (should_loop && !done) { @@ -1184,15 +1184,17 @@ static int ceph_writepages_start(struct address_space *mapping, unsigned i, nr; index = 0; while ((index <= end) && - (nr = pagevec_lookup_tag(&pvec, mapping, &index, - PAGECACHE_TAG_WRITEBACK))) { + (nr = filemap_get_folios_tag(mapping, &index, + (pgoff_t)-1, + PAGECACHE_TAG_WRITEBACK, + &fbatch))) { for (i = 0; i < nr; i++) { - page = pvec.pages[i]; + page = &fbatch.folios[i]->page; if (page_snap_context(page) != snapc) continue; wait_on_page_writeback(page); } - pagevec_release(&pvec); + folio_batch_release(&fbatch); cond_resched(); } }
Convert function to use a folio_batch instead of pagevec. This is in preparation for the removal of find_get_pages_range_tag(). Also some minor renaming for consistency. Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> --- fs/ceph/addr.c | 58 ++++++++++++++++++++++++++------------------------ 1 file changed, 30 insertions(+), 28 deletions(-)