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bh=5Z1+5HwGzB5SEc0qPWicNuIJp37/qrfI8QMkqNpAi48=; b=5JY2fbCSc2TZkH7U2NorBXeYA03lIIIPAjaen8xJmyCtmgBJlDLNlfUBSCldYUkH3x5Tvv z+8wNY6E+AfPXXkzmRvPFpqeI/0xMKcD9QzLCZnad6q9kHzDYpaoNGA1qRMlQ6MPbIN5cV p4QMAHv6/p2niAcer0VH2lfguDi6WF4= X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: CEC8F14003B X-Rspam-User: Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=ZjFBwJwy; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=+AIGGJhj; dmarc=none; spf=pass (imf09.hostedemail.com: domain of dsterba@suse.cz designates 195.135.220.29 as permitted sender) smtp.mailfrom=dsterba@suse.cz X-Stat-Signature: 43c1gdzfaxodikja1kmcow3ihoioj55z X-HE-Tag: 1661287329-67877 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Aug 16, 2022 at 10:52:42AM -0700, Vishal Moola (Oracle) wrote: > Converted function to use folios throughout. This is in preparation for > the removal of find_get_pages_contig(). Now also supports large folios. > > Since we may receive more than nr_pages pages, nr_pages may underflow. > Since nr_pages > 0 is equivalent to index <= end_index, we replaced it > with this check instead. > > Also this function does not care about the pages being contiguous so we > can just use filemap_get_folios() to be more efficient. > > Signed-off-by: Vishal Moola (Oracle) With minor comments Acked-by: David Sterba > --- a/fs/btrfs/compression.c > +++ b/fs/btrfs/compression.c > @@ -8,6 +8,7 @@ > #include > #include > #include > +#include > #include > #include > #include > @@ -339,8 +340,7 @@ static noinline void end_compressed_writeback(struct inode *inode, > struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); > unsigned long index = cb->start >> PAGE_SHIFT; > unsigned long end_index = (cb->start + cb->len - 1) >> PAGE_SHIFT; > - struct page *pages[16]; > - unsigned long nr_pages = end_index - index + 1; > + struct folio_batch fbatch; > const int errno = blk_status_to_errno(cb->status); > int i; > int ret; > @@ -348,24 +348,22 @@ static noinline void end_compressed_writeback(struct inode *inode, > if (errno) > mapping_set_error(inode->i_mapping, errno); > > - while (nr_pages > 0) { > - ret = find_get_pages_contig(inode->i_mapping, index, > - min_t(unsigned long, > - nr_pages, ARRAY_SIZE(pages)), pages); > + folio_batch_init(&fbatch); > + while (index <= end_index) { > + ret = filemap_get_folios(inode->i_mapping, &index, end_index, > + &fbatch); > + > if (ret == 0) { > - nr_pages -= 1; > - index += 1; > - continue; > + return; > } Please drop { } around single statement > for (i = 0; i < ret; i++) { > + struct folio *folio = fbatch.folios[i]; And add a newline after declaration. > if (errno) > - SetPageError(pages[i]); > - btrfs_page_clamp_clear_writeback(fs_info, pages[i], > + folio_set_error(folio); > + btrfs_page_clamp_clear_writeback(fs_info, &folio->page, > cb->start, cb->len); > - put_page(pages[i]); > } > - nr_pages -= ret; > - index += ret; > + folio_batch_release(&fbatch); > } > /* the inode may be gone now */ > } > -- > 2.36.1