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Tue, 24 Nov 2020 13:28:31 +0000 (UTC) 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=Q/MCT6maV/iKaSxRRRnLFBnoEWfPfC40ypgl1Ci8nRk=; b=pWcZmhed1VtM52P3q1JMqqjfxR GWMfkfGGh21/NCT85snknz3WDUM0FCyAbepRt+ZELj82dad4m3br4Sawb66pKbQxSAEUaJxSeL+Ll 71lYUsvhjLKgY/YbGp0X++3PkxXh+KrssNfKTT0h2mCWPuefl+mBpjJwTcCV+e1SRjBbrscsDgFCm lMW8Geg/e4WV3fB64E9SDr1XU5cgwgMIdLeq0nWxNCx03aqe1+hiU2wmbmGncWiO1/xxhiOEuXkHa z9KSmzy5zBC51q81wbv9yHNv1xP232XeeVA1TEmOLWeYTbWgkPDrO0cmsehbzSHT+I2DtVpVX0ELT qGUkh4WA==; Received: from [2001:4bb8:180:5443:c70:4a89:bc61:3] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1khYMO-0006UA-S8; Tue, 24 Nov 2020 13:27:58 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Tejun Heo , Josef Bacik , Konrad Rzeszutek Wilk , Coly Li , Mike Snitzer , Greg Kroah-Hartman , Jan Kara , Johannes Thumshirn , dm-devel@redhat.com, Richard Weinberger , Jan Kara , linux-block@vger.kernel.org, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 02/45] filemap: consistently use ->f_mapping over ->i_mapping Date: Tue, 24 Nov 2020 14:27:08 +0100 Message-Id: <20201124132751.3747337-3-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201124132751.3747337-1-hch@lst.de> References: <20201124132751.3747337-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Use file->f_mapping in all remaining places that have a struct file available to properly handle the case where inode->i_mapping != file_inode(file)->i_mapping. Signed-off-by: Christoph Hellwig Reviewed-by: Matthew Wilcox (Oracle) Reviewed-by: Hannes Reinecke Reviewed-by: Jan Kara --- mm/filemap.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/mm/filemap.c b/mm/filemap.c index d5e7c2029d16b4..4f583489aa3c2a 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2886,14 +2886,14 @@ EXPORT_SYMBOL(filemap_map_pages); vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf) { + struct address_space *mapping = vmf->vma->vm_file->f_mapping; struct page *page = vmf->page; - struct inode *inode = file_inode(vmf->vma->vm_file); vm_fault_t ret = VM_FAULT_LOCKED; - sb_start_pagefault(inode->i_sb); + sb_start_pagefault(mapping->host->i_sb); file_update_time(vmf->vma->vm_file); lock_page(page); - if (page->mapping != inode->i_mapping) { + if (page->mapping != mapping) { unlock_page(page); ret = VM_FAULT_NOPAGE; goto out; @@ -2906,7 +2906,7 @@ vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf) set_page_dirty(page); wait_for_stable_page(page); out: - sb_end_pagefault(inode->i_sb); + sb_end_pagefault(mapping->host->i_sb); return ret; } @@ -3149,10 +3149,9 @@ void dio_warn_stale_pagecache(struct file *filp) { static DEFINE_RATELIMIT_STATE(_rs, 86400 * HZ, DEFAULT_RATELIMIT_BURST); char pathname[128]; - struct inode *inode = file_inode(filp); char *path; - errseq_set(&inode->i_mapping->wb_err, -EIO); + errseq_set(&filp->f_mapping->wb_err, -EIO); if (__ratelimit(&_rs)) { path = file_path(filp, pathname, sizeof(pathname)); if (IS_ERR(path)) @@ -3179,7 +3178,7 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from) if (iocb->ki_flags & IOCB_NOWAIT) { /* If there are pages to writeback, return */ - if (filemap_range_has_page(inode->i_mapping, pos, + if (filemap_range_has_page(file->f_mapping, pos, pos + write_len - 1)) return -EAGAIN; } else {