From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0AAFD346E75 for ; Tue, 25 Aug 2026 01:54:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787622888; cv=none; b=Xg1cmmBmJ+5/ttPIqJxFRBSFh54VtRbpuUlC3xyhJh95y/iD2Z61km3wbPnaSDlxQ7Ov0CSrLxR4gFAGY2UxOQ58Rv+X4fma2oO7uhXfNb7gbdR+BQlI+WUaoXJKuo+csE8bHrCT9yYV2+6mI5xEMHe9u1kpW0sOW+jNBswc44I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787622888; c=relaxed/simple; bh=Z96eHfAkQW0ekCjQZWgPMfSJ0NvdpQozeXWJvBq9JAE=; h=Date:To:From:Subject:Message-Id; b=ehW4X805ni3XXC8sLYt08whEYeWHuuMGbfzFvsQUE6WeEn/cIEOkWpAmhTT6sPBOhpwqegtec87flVEgXiREQUd6qcHxuj21/DYO6753GBrBtCSD+b/Lg2c9dYzWLgSl2VdMTajpoqCEHMOsX+W5GWzjD78tLaQAlz7tYh9tygw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=ZK1Stbtt; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="ZK1Stbtt" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D5D461F00A3A; Tue, 25 Aug 2026 01:54:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1787622886; bh=jUlQSSKIkFBsE47oq5OiyDi7KLk2eB6nmfx+q99Vjfs=; h=Date:To:From:Subject; b=ZK1StbttC3sFNdxywTG2ZXYtRPJW+c+jJQQTbhpTryGdTCUeuKOMeAhJYfZqcJCcs fCMrWvOnjE5rxn9uO9U+Ax/L5J321w1agph9xVg4PexDs2dvAzKyKSVECQScOgMYrh 5AwfebugCpEuZIlJ3Fu5jT4WG+oS39X/eJVAf/ao= Date: Mon, 24 Aug 2026 18:54:46 -0700 To: mm-commits@vger.kernel.org,youngjun.park@lge.com,shikemeng@huaweicloud.com,nphamcs@gmail.com,kasong@tencent.com,chrisl@kernel.org,baoquan.he@linux.dev,baolin.wang@linux.alibaba.com,baohua@kernel.org,hch@lst.de,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] shmem-provide-a-shmem_write_folio-wrapper.patch removed from -mm tree Message-Id: <20260825015446.D5D461F00A3A@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: shmem: provide a shmem_write_folio wrapper has been removed from the -mm tree. Its filename was shmem-provide-a-shmem_write_folio-wrapper.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Christoph Hellwig Subject: shmem: provide a shmem_write_folio wrapper Date: Mon, 13 Jul 2026 11:33:38 +0200 Patch series "better block swap batching and a different take on swap_ops v5". This series makes use of the swap_iocb for block as well so that it doesn't do inefficient single-bio I/O, and then rebases the swap_ops from Baoquan on top of the now very different method structure. When running doing kernels builds, which is a workload that doesn't really do much THP anonymous memory it still gets 2x clustering for writeout and 1.2x for reading back swap in. The overall times do not actually change, though. This patch (of 7): Provide a wrapper for the shmem abuses in drm to prepare for swap I/O refactoring by keeping swap_iocb handling entirely contained in mm/. Link: https://lore.kernel.org/20260713093350.2154226-1-hch@lst.de Link: https://lore.kernel.org/20260713093350.2154226-2-hch@lst.de Signed-off-by: Christoph Hellwig Reviewed-by: Baoquan He Reviewed-by: Nhat Pham Reviewed-by: Baolin Wang Acked-by: Chris Li Reviewed-by: Kairui Song Cc: Kemeng Shi Cc: Barry Song Cc: Youngjun Park Signed-off-by: Andrew Morton --- drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 2 +- drivers/gpu/drm/ttm/ttm_backup.c | 2 +- include/linux/shmem_fs.h | 5 +---- mm/shmem.c | 7 ++++++- mm/swap.h | 4 ++++ 5 files changed, 13 insertions(+), 7 deletions(-) --- a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c~shmem-provide-a-shmem_write_folio-wrapper +++ a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c @@ -325,7 +325,7 @@ void __shmem_writeback(size_t size, stru if (folio_mapped(folio)) folio_redirty_for_writepage(&wbc, folio); else - error = shmem_writeout(folio, NULL, NULL); + error = shmem_write_folio(folio); } } --- a/drivers/gpu/drm/ttm/ttm_backup.c~shmem-provide-a-shmem_write_folio-wrapper +++ a/drivers/gpu/drm/ttm/ttm_backup.c @@ -160,7 +160,7 @@ ttm_backup_backup_folio(struct file *bac if (writeback && !folio_mapped(to_folio) && folio_clear_dirty_for_io(to_folio)) { folio_set_reclaim(to_folio); - ret = shmem_writeout(to_folio, NULL, NULL); + ret = shmem_write_folio(to_folio); if (!folio_test_writeback(to_folio)) folio_clear_reclaim(to_folio); if (ret == AOP_WRITEPAGE_ACTIVATE) --- a/include/linux/shmem_fs.h~shmem-provide-a-shmem_write_folio-wrapper +++ a/include/linux/shmem_fs.h @@ -12,8 +12,6 @@ #include #include -struct swap_iocb; - /* inode in-kernel data */ #ifdef CONFIG_TMPFS_QUOTA @@ -123,8 +121,7 @@ static inline bool shmem_mapping(const s void shmem_unlock_mapping(struct address_space *mapping); struct page *shmem_read_mapping_page_gfp(struct address_space *mapping, pgoff_t index, gfp_t gfp_mask); -int shmem_writeout(struct folio *folio, struct swap_iocb **plug, - struct list_head *folio_list); +int shmem_write_folio(struct folio *folio); void shmem_truncate_range(struct inode *inode, loff_t start, uoff_t end); int shmem_unuse(unsigned int type); --- a/mm/shmem.c~shmem-provide-a-shmem_write_folio-wrapper +++ a/mm/shmem.c @@ -1751,7 +1751,12 @@ redirty: folio_mark_dirty(folio); return AOP_WRITEPAGE_ACTIVATE; /* Return with folio locked */ } -EXPORT_SYMBOL_GPL(shmem_writeout); + +int shmem_write_folio(struct folio *folio) +{ + return shmem_writeout(folio, NULL, NULL); +} +EXPORT_SYMBOL_GPL(shmem_write_folio); #if defined(CONFIG_NUMA) && defined(CONFIG_TMPFS) static void shmem_show_mpol(struct seq_file *seq, struct mempolicy *mpol) --- a/mm/swap.h~shmem-provide-a-shmem_write_folio-wrapper +++ a/mm/swap.h @@ -486,4 +486,8 @@ static inline unsigned int folio_swap_fl } #endif /* CONFIG_SWAP */ + +int shmem_writeout(struct folio *folio, struct swap_iocb **plug, + struct list_head *folio_list); + #endif /* _MM_SWAP_H */ _ Patches currently in -mm which might be from hch@lst.de are