From patchwork Mon Jun 6 20:40:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 12871018 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB675C433EF for ; Mon, 6 Jun 2022 20:48:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234161AbiFFUsN (ORCPT ); Mon, 6 Jun 2022 16:48:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234636AbiFFUrp (ORCPT ); Mon, 6 Jun 2022 16:47:45 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0FAE013F41F; Mon, 6 Jun 2022 13:41:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=yRw8leL5SKtlh4++9TxNP+z712DV8+bDADLqGeitGxc=; b=SxeZ3A1uaIsSGG8YQDJB8CVjMo RhDHeQ42KfkDop6K5lQE8C+66YcnYa0VCURkfr5ICCpPaphHo5tX2HVRsMSJ7z/xTY+wZggTjRlxM R937PSGLmVLf2sFQ9kucQIoWF5+Ip9CCMWv+8GUOStUXo/SYT59CLtTLg4BCyeLkYS+LD24oYkB86 Gdv1EDhaJPx6MDDS40WYjhcZTnNgKHHs1PsB+4eWq1Zz4JEwiL3j3cAC0I+zzPj1FufrehBgeYqLq 9LYmEsmuoFe9IPIj9yF3rVW7aVqR5MdddkvzuRgBrp/A1g5lUBKy0RBihHd1nNA/I6c76YD4sjZsD zWdPDuag==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nyJWx-00B19a-7W; Mon, 06 Jun 2022 20:40:55 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-aio@kvack.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-mm@kvack.org, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, ocfs2-devel@oss.oracle.com, linux-mtd@lists.infradead.org, virtualization@lists.linux-foundation.org Subject: [PATCH 09/20] mm/migrate: Add filemap_migrate_folio() Date: Mon, 6 Jun 2022 21:40:39 +0100 Message-Id: <20220606204050.2625949-10-willy@infradead.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220606204050.2625949-1-willy@infradead.org> References: <20220606204050.2625949-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org There is nothing iomap-specific about iomap_migratepage(), and it fits a pattern used by several other filesystems, so move it to mm/migrate.c, convert it to be filemap_migrate_folio() and convert the iomap filesystems to use it. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig --- fs/gfs2/aops.c | 2 +- fs/iomap/buffered-io.c | 25 ------------------------- fs/xfs/xfs_aops.c | 2 +- fs/zonefs/super.c | 2 +- include/linux/iomap.h | 6 ------ include/linux/pagemap.h | 6 ++++++ mm/migrate.c | 20 ++++++++++++++++++++ 7 files changed, 29 insertions(+), 34 deletions(-) diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 106e90a36583..57ff883d432c 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -774,7 +774,7 @@ static const struct address_space_operations gfs2_aops = { .invalidate_folio = iomap_invalidate_folio, .bmap = gfs2_bmap, .direct_IO = noop_direct_IO, - .migratepage = iomap_migrate_page, + .migrate_folio = filemap_migrate_folio, .is_partially_uptodate = iomap_is_partially_uptodate, .error_remove_page = generic_error_remove_page, }; diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 66278a14bfa7..5a91aa1db945 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -489,31 +489,6 @@ void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len) } EXPORT_SYMBOL_GPL(iomap_invalidate_folio); -#ifdef CONFIG_MIGRATION -int -iomap_migrate_page(struct address_space *mapping, struct page *newpage, - struct page *page, enum migrate_mode mode) -{ - struct folio *folio = page_folio(page); - struct folio *newfolio = page_folio(newpage); - int ret; - - ret = folio_migrate_mapping(mapping, newfolio, folio, 0); - if (ret != MIGRATEPAGE_SUCCESS) - return ret; - - if (folio_test_private(folio)) - folio_attach_private(newfolio, folio_detach_private(folio)); - - if (mode != MIGRATE_SYNC_NO_COPY) - folio_migrate_copy(newfolio, folio); - else - folio_migrate_flags(newfolio, folio); - return MIGRATEPAGE_SUCCESS; -} -EXPORT_SYMBOL_GPL(iomap_migrate_page); -#endif /* CONFIG_MIGRATION */ - static void iomap_write_failed(struct inode *inode, loff_t pos, unsigned len) { diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 8ec38b25187b..5d1a995b15f8 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -570,7 +570,7 @@ const struct address_space_operations xfs_address_space_operations = { .invalidate_folio = iomap_invalidate_folio, .bmap = xfs_vm_bmap, .direct_IO = noop_direct_IO, - .migratepage = iomap_migrate_page, + .migrate_folio = filemap_migrate_folio, .is_partially_uptodate = iomap_is_partially_uptodate, .error_remove_page = generic_error_remove_page, .swap_activate = xfs_iomap_swapfile_activate, diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c index bcb21aea990a..d4c3f28f34ee 100644 --- a/fs/zonefs/super.c +++ b/fs/zonefs/super.c @@ -237,7 +237,7 @@ static const struct address_space_operations zonefs_file_aops = { .dirty_folio = filemap_dirty_folio, .release_folio = iomap_release_folio, .invalidate_folio = iomap_invalidate_folio, - .migratepage = iomap_migrate_page, + .migrate_folio = filemap_migrate_folio, .is_partially_uptodate = iomap_is_partially_uptodate, .error_remove_page = generic_error_remove_page, .direct_IO = noop_direct_IO, diff --git a/include/linux/iomap.h b/include/linux/iomap.h index e552097c67e0..758a1125e72f 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -231,12 +231,6 @@ void iomap_readahead(struct readahead_control *, const struct iomap_ops *ops); bool iomap_is_partially_uptodate(struct folio *, size_t from, size_t count); bool iomap_release_folio(struct folio *folio, gfp_t gfp_flags); void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len); -#ifdef CONFIG_MIGRATION -int iomap_migrate_page(struct address_space *mapping, struct page *newpage, - struct page *page, enum migrate_mode mode); -#else -#define iomap_migrate_page NULL -#endif int iomap_file_unshare(struct inode *inode, loff_t pos, loff_t len, const struct iomap_ops *ops); int iomap_zero_range(struct inode *inode, loff_t pos, loff_t len, diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 1caccb9f99aa..2a67c0ad7348 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -1078,6 +1078,12 @@ static inline int __must_check write_one_page(struct page *page) int __set_page_dirty_nobuffers(struct page *page); bool noop_dirty_folio(struct address_space *mapping, struct folio *folio); +#ifdef CONFIG_MIGRATION +int filemap_migrate_folio(struct address_space *mapping, struct folio *dst, + struct folio *src, enum migrate_mode mode); +#else +#define filemap_migrate_folio NULL +#endif void page_endio(struct page *page, bool is_write, int err); void folio_end_private_2(struct folio *folio); diff --git a/mm/migrate.c b/mm/migrate.c index 6232c291fdb9..148dd0463dec 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -785,6 +785,26 @@ int buffer_migrate_folio_norefs(struct address_space *mapping, } #endif +int filemap_migrate_folio(struct address_space *mapping, + struct folio *dst, struct folio *src, enum migrate_mode mode) +{ + int ret; + + ret = folio_migrate_mapping(mapping, dst, src, 0); + if (ret != MIGRATEPAGE_SUCCESS) + return ret; + + if (folio_get_private(src)) + folio_attach_private(dst, folio_detach_private(src)); + + if (mode != MIGRATE_SYNC_NO_COPY) + folio_migrate_copy(dst, src); + else + folio_migrate_flags(dst, src); + return MIGRATEPAGE_SUCCESS; +} +EXPORT_SYMBOL_GPL(filemap_migrate_folio); + /* * Writeback a folio to clean the dirty state */