From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx141.postini.com [74.125.245.141]) by kanga.kvack.org (Postfix) with SMTP id B39F86B005D for ; Fri, 2 Nov 2012 12:33:39 -0400 (EDT) From: Naoya Horiguchi Subject: [PATCH 2/2 v2] mm: print out information of file affected by memory error Date: Fri, 2 Nov 2012 12:33:13 -0400 Message-Id: <1351873993-9373-3-git-send-email-n-horiguchi@ah.jp.nec.com> In-Reply-To: <1351873993-9373-1-git-send-email-n-horiguchi@ah.jp.nec.com> References: <1351873993-9373-1-git-send-email-n-horiguchi@ah.jp.nec.com> Sender: owner-linux-mm@kvack.org List-ID: To: Tony Luck , Andi Kleen Cc: Wu Fengguang , Andrew Morton , Ingo Molnar , Jun'ichi Nomura , Naoya Horiguchi , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Jan Kara Printing out the information about which file can be affected by a memory error in generic_error_remove_page() is helpful for user to estimate the impact of the error. Changelog v2: - dereference mapping->host after if (!mapping) check for robustness Signed-off-by: Naoya Horiguchi Cc: Jan Kara --- mm/truncate.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git v3.7-rc3.orig/mm/truncate.c v3.7-rc3/mm/truncate.c index d51ce92..db1b216 100644 --- v3.7-rc3.orig/mm/truncate.c +++ v3.7-rc3/mm/truncate.c @@ -151,14 +151,20 @@ int truncate_inode_page(struct address_space *mapping, struct page *page) */ int generic_error_remove_page(struct address_space *mapping, struct page *page) { + struct inode *inode; + if (!mapping) return -EINVAL; + inode = mapping->host; /* * Only punch for normal data pages for now. * Handling other types like directories would need more auditing. */ - if (!S_ISREG(mapping->host->i_mode)) + if (!S_ISREG(inode->i_mode)) return -EIO; + pr_info("MCE %#lx: file info pgoff:%lu, inode:%lu, dev:%s\n", + page_to_pfn(page), page_index(page), + inode->i_ino, inode->i_sb->s_id); return truncate_inode_page(mapping, page); } EXPORT_SYMBOL(generic_error_remove_page); -- 1.7.11.7 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org