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Tue, 21 Jan 2020 12:31:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579609870; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=RiEISjCX3BKvVv6er1yuVLiUnfihUTExv2EGJg7bkWg=; b=IW9MGKvgfRe33G3/iUnm/U2ZpAyeAV/mDbxH1YERm8pIt+OJ9S7LlrgHQT/fOE+UX3jqFI qK/TxLzaVAlThVsEIRaHJjjjkmGMtD+ubqm1D4AiyDonwHfhTk+dQsIF4gbWp6+1eMVzIP jt9us0+Z/7vJRr50ahUoIwLSBdWnm8w= From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, stefanha@redhat.com, vgoyal@redhat.com, berrange@redhat.com, slp@redhat.com, philmd@redhat.com Subject: [PATCH v2 076/109] virtiofsd: Clean up inodes on destroy Date: Tue, 21 Jan 2020 12:24:00 +0000 Message-Id: <20200121122433.50803-77-dgilbert@redhat.com> In-Reply-To: <20200121122433.50803-1-dgilbert@redhat.com> References: <20200121122433.50803-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-MC-Unique: cGFUZUnyN3i8t8H9zgo9rw-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.61 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: m.mizuma@jp.fujitsu.com, misono.tomohiro@jp.fujitsu.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Content-Type: text/plain; charset="utf-8" From: "Dr. David Alan Gilbert" Clear out our inodes and fd's on a 'destroy' - so we get rid of them if we reboot the guest. Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Daniel P. Berrang=C3=A9 --- tools/virtiofsd/passthrough_ll.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough= _ll.c index e0f76b37b7..3b60e61c74 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -1169,6 +1169,25 @@ static void unref_inode_lolocked(struct lo_data *lo,= struct lo_inode *inode, } } =20 +static int unref_all_inodes_cb(gpointer key, gpointer value, gpointer user= _data) +{ + struct lo_inode *inode =3D value; + struct lo_data *lo =3D user_data; + + inode->refcount =3D 0; + lo_map_remove(&lo->ino_map, inode->fuse_ino); + close(inode->fd); + + return TRUE; +} + +static void unref_all_inodes(struct lo_data *lo) +{ + pthread_mutex_lock(&lo->mutex); + g_hash_table_foreach_remove(lo->inodes, unref_all_inodes_cb, lo); + pthread_mutex_unlock(&lo->mutex); +} + static void lo_forget_one(fuse_req_t req, fuse_ino_t ino, uint64_t nlookup) { struct lo_data *lo =3D lo_data(req); @@ -2035,6 +2054,12 @@ static void lo_lseek(fuse_req_t req, fuse_ino_t ino,= off_t off, int whence, } } =20 +static void lo_destroy(void *userdata) +{ + struct lo_data *lo =3D (struct lo_data *)userdata; + unref_all_inodes(lo); +} + static struct fuse_lowlevel_ops lo_oper =3D { .init =3D lo_init, .lookup =3D lo_lookup, @@ -2073,6 +2098,7 @@ static struct fuse_lowlevel_ops lo_oper =3D { .copy_file_range =3D lo_copy_file_range, #endif .lseek =3D lo_lseek, + .destroy =3D lo_destroy, }; =20 /* Print vhost-user.json backend program capabilities */ --=20 2.24.1