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[195.135.220.15]) by mx.google.com with ESMTPS id e27si3607877edd.353.2019.07.11.07.00.17 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 11 Jul 2019 07:00:17 -0700 (PDT) Received-SPF: pass (google.com: domain of jack@suse.cz designates 195.135.220.15 as permitted sender) client-ip=195.135.220.15; Authentication-Results: mx.google.com; spf=pass (google.com: domain of jack@suse.cz designates 195.135.220.15 as permitted sender) smtp.mailfrom=jack@suse.cz X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id F330AAF1B; Thu, 11 Jul 2019 14:00:16 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 291371E43CC; Thu, 11 Jul 2019 16:00:16 +0200 (CEST) From: Jan Kara To: Cc: , , Amir Goldstein , Boaz Harrosh , Jan Kara , stable@vger.kernel.org Subject: [PATCH 2/3] fs: Export generic_fadvise() Date: Thu, 11 Jul 2019 16:00:11 +0200 Message-Id: <20190711140012.1671-3-jack@suse.cz> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190711140012.1671-1-jack@suse.cz> References: <20190711140012.1671-1-jack@suse.cz> 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: X-Virus-Scanned: ClamAV using ClamSMTP Filesystems will need to call this function from their fadvise handlers. CC: stable@vger.kernel.org # Needed by "xfs: Fix stale data exposure when readahead races with hole punch" Signed-off-by: Jan Kara Reviewed-by: Darrick J. Wong --- include/linux/fs.h | 2 ++ mm/fadvise.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/include/linux/fs.h b/include/linux/fs.h index f7fdfe93e25d..2666862ff00d 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3536,6 +3536,8 @@ extern void inode_nohighmem(struct inode *inode); /* mm/fadvise.c */ extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len, int advice); +extern int generic_fadvise(struct file *file, loff_t offset, loff_t len, + int advice); #if defined(CONFIG_IO_URING) extern struct sock *io_uring_get_socket(struct file *file); diff --git a/mm/fadvise.c b/mm/fadvise.c index 467bcd032037..4f17c83db575 100644 --- a/mm/fadvise.c +++ b/mm/fadvise.c @@ -27,8 +27,7 @@ * deactivate the pages and clear PG_Referenced. */ -static int generic_fadvise(struct file *file, loff_t offset, loff_t len, - int advice) +int generic_fadvise(struct file *file, loff_t offset, loff_t len, int advice) { struct inode *inode; struct address_space *mapping; @@ -178,6 +177,7 @@ static int generic_fadvise(struct file *file, loff_t offset, loff_t len, } return 0; } +EXPORT_SYMBOL(generic_fadvise); int vfs_fadvise(struct file *file, loff_t offset, loff_t len, int advice) {