From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id CD11DC433FE for ; Fri, 27 May 2022 15:50:53 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 927208D002D; Fri, 27 May 2022 11:50:45 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 432B78D0027; Fri, 27 May 2022 11:50:45 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B51A88D002A; Fri, 27 May 2022 11:50:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 5A33C8D0021 for ; Fri, 27 May 2022 11:50:44 -0400 (EDT) Received: from smtpin18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay12.hostedemail.com (Postfix) with ESMTP id 0AA181209B6 for ; Fri, 27 May 2022 15:50:44 +0000 (UTC) X-FDA: 79511960808.18.C5D6B5A Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf15.hostedemail.com (Postfix) with ESMTP id E5D4FA003B for ; Fri, 27 May 2022 15:50:22 +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=KV0SikI/SB3SrY5NZJBM8ckFOFL47m5xu8gYB9A0uRI=; b=Ryhf9qgRsU18ms7Z3Y2KaPP/G0 EzjTVlWi2W75I0bkOTZNUBNa3pbGQct+dYX8WETHXDYk7Oc5LeprpWHA1yA6daibjFLKR2wVhyXpF /KsZNtHVqm2R6VbQ/Q1N4xSy5J1PXra7/X6RSB0ycQ1jh3mR80zYGLqQVV7XkbOzjmG2dyi1Xa5qZ UryhUbsXuXaUjzp90azxszyW0PJOvt5TiTLygclohU3cPBRaamav6Qe/5+2+NZah+mg8wMkJA5OpP 9M0CPXaK7BiCI+Pg3FA9wgy7KcG1gJOo8K6pO/Wu8WN17RIGEKT74/+S9RPZSWVnmKhpHkdhll90O kUHDAnVA==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nucEc-002CXp-6h; Fri, 27 May 2022 15:50:42 +0000 From: "Matthew Wilcox (Oracle)" To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org Subject: [PATCH 22/24] squashfs: Return the actual error from squashfs_read_folio() Date: Fri, 27 May 2022 16:50:34 +0100 Message-Id: <20220527155036.524743-23-willy@infradead.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220527155036.524743-1-willy@infradead.org> References: <20220527155036.524743-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: h66kmzdj1fq6c7sru47u7533zppkan4q X-Rspam-User: Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=Ryhf9qgR; dmarc=none; spf=none (imf15.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: E5D4FA003B X-HE-Tag: 1653666622-625930 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: Since we actually know what error happened, we can report it instead of having the generic code return -EIO for pages that were unlocked without being marked uptodate. Also remove a test of PageError since we have the return value at this point. Signed-off-by: Matthew Wilcox (Oracle) --- fs/squashfs/file.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/fs/squashfs/file.c b/fs/squashfs/file.c index a8e495d8eb86..7f0904b20329 100644 --- a/fs/squashfs/file.c +++ b/fs/squashfs/file.c @@ -454,7 +454,7 @@ static int squashfs_read_folio(struct file *file, struct folio *folio) int expected = index == file_end ? (i_size_read(inode) & (msblk->block_size - 1)) : msblk->block_size; - int res; + int res = 0; void *pageaddr; TRACE("Entered squashfs_readpage, page index %lx, start block %llx\n", @@ -467,14 +467,15 @@ static int squashfs_read_folio(struct file *file, struct folio *folio) if (index < file_end || squashfs_i(inode)->fragment_block == SQUASHFS_INVALID_BLK) { u64 block = 0; - int bsize = read_blocklist(inode, index, &block); - if (bsize < 0) + + res = read_blocklist(inode, index, &block); + if (res < 0) goto error_out; - if (bsize == 0) + if (res == 0) res = squashfs_readpage_sparse(page, expected); else - res = squashfs_readpage_block(page, block, bsize, expected); + res = squashfs_readpage_block(page, block, res, expected); } else res = squashfs_readpage_fragment(page, expected); @@ -488,11 +489,11 @@ static int squashfs_read_folio(struct file *file, struct folio *folio) memset(pageaddr, 0, PAGE_SIZE); kunmap_atomic(pageaddr); flush_dcache_page(page); - if (!PageError(page)) + if (res == 0) SetPageUptodate(page); unlock_page(page); - return 0; + return res; } -- 2.34.1