From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id 451896B0044 for ; Sat, 5 Dec 2009 15:23:29 -0500 (EST) Date: Sat, 5 Dec 2009 20:23:18 +0000 (GMT) From: Hugh Dickins Subject: Re: [RFC PATCH 01/15] shmem: do not call fput_filp on an initialized filp In-Reply-To: <20091204204646.18286.24853.stgit@paris.rdu.redhat.com> Message-ID: References: <20091204204646.18286.24853.stgit@paris.rdu.redhat.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Eric Paris Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, viro@zeniv.linux.org.uk, jmorris@namei.org, npiggin@suse.de, zohar@us.ibm.com, jack@suse.cz, jmalicki@metacarta.com, dsmith@redhat.com, serue@us.ibm.com, hch@lst.de, john@johnmccutchan.com, rlove@rlove.org, ebiederm@xmission.com, heiko.carstens@de.ibm.com, penguin-kernel@I-love.SAKURA.ne.jp, mszeredi@suse.cz, jens.axboe@oracle.com, akpm@linux-foundation.org, matthew@wil.cx, hugh.dickins@tiscali.co.uk, kamezawa.hiroyu@jp.fujitsu.com, nishimura@mxp.nes.nec.co.jp, davem@davemloft.net, arnd@arndb.de, eric.dumazet@gmail.com List-ID: On Fri, 4 Dec 2009, Eric Paris wrote: > fput_filp is supposed to be used when the filp was not used. But in the put_filp > ifndef CONFIG_MMU case shmem_setup_file could call this one an initialized on > filp. It should be using fput() instead. Since the fput() will dec the ima > counts we also need to move the ima hook to make sure that is set up before > the fput(). > > Signed-off-by: Eric Paris > Acked-by: Miklos Szeredi Thanks, Acked-by: Hugh Dickins > --- > > mm/shmem.c | 9 ++++++--- > 1 files changed, 6 insertions(+), 3 deletions(-) > > diff --git a/mm/shmem.c b/mm/shmem.c > index 356dd99..e7f8968 100644 > --- a/mm/shmem.c > +++ b/mm/shmem.c > @@ -2656,12 +2656,15 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags > init_file(file, shm_mnt, dentry, FMODE_WRITE | FMODE_READ, > &shmem_file_operations); > > + ima_counts_get(file); > + > #ifndef CONFIG_MMU > error = ramfs_nommu_expand_for_mapping(inode, size); > - if (error) > - goto close_file; > + if (error) { > + fput(file); > + return error; > + } > #endif > - ima_counts_get(file); > return file; > > close_file: -- 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