Revision 156cacb1d0d36b0d0582d9e798e58e0044f516b3 authored by Al Viro on 21 September 2012, 12:19:02 UTC, committed by Al Viro on 23 September 2012, 00:48:18 UTC
normally we deal with lock_mount()/umount races by checking that mountpoint to be is still in our namespace after lock_mount() has been done. However, do_add_mount() skips that check when called with MNT_SHRINKABLE in flags (i.e. from finish_automount()). The reason is that ->mnt_ns may be a temporary namespace created exactly to contain automounts a-la NFS4 referral handling. It's not the namespace of the caller, though, so check_mnt() would fail here. We still need to check that ->mnt_ns is non-NULL in that case, though. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
1 parent fea7a08
common.h
/*
*
* Header for code common to all OMAP1 machines.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ARCH_ARM_MACH_OMAP1_COMMON_H
#define __ARCH_ARM_MACH_OMAP1_COMMON_H
#include <plat/common.h>
#include <linux/mtd/mtd.h>
#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
void omap7xx_map_io(void);
#else
static inline void omap7xx_map_io(void)
{
}
#endif
#ifdef CONFIG_ARCH_OMAP15XX
void omap15xx_map_io(void);
#else
static inline void omap15xx_map_io(void)
{
}
#endif
#ifdef CONFIG_ARCH_OMAP16XX
void omap16xx_map_io(void);
#else
static inline void omap16xx_map_io(void)
{
}
#endif
#ifdef CONFIG_OMAP_SERIAL_WAKE
int omap_serial_wakeup_init(void);
#else
static inline int omap_serial_wakeup_init(void)
{
return 0;
}
#endif
void omap1_init_early(void);
void omap1_init_irq(void);
void omap1_init_late(void);
void omap1_restart(char, const char *);
extern void __init omap_check_revision(void);
extern void omap1_nand_cmd_ctl(struct mtd_info *mtd, int cmd,
unsigned int ctrl);
extern struct sys_timer omap1_timer;
#ifdef CONFIG_OMAP_32K_TIMER
extern int omap_32k_timer_init(void);
#else
static inline int __init omap_32k_timer_init(void)
{
return -ENODEV;
}
#endif
extern u32 omap_irq_flags;
#ifdef CONFIG_ARCH_OMAP16XX
extern int ocpi_enable(void);
#else
static inline int ocpi_enable(void) { return 0; }
#endif
#endif /* __ARCH_ARM_MACH_OMAP1_COMMON_H */
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