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Rafael J. Wysocki 25f2f3daad snapshot: Use pm_mutex for mutual exclusion ... We can avoid taking the BKL in snapshot_ioctl() if pm_mutex is used to prevent the ioctls from being executed concurrently. In addition, although it is only possible to open /dev/snapshot once, the task which has done that may spawn a child that will inherit the open descriptor, so in theory they can call snapshot_write(), snapshot_read() and snapshot_release() concurrently. pm_mutex can also be used for mutual exclusion in such cases. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>		17 years ago
..
Kconfig	PM: Remove legacy PM	17 years ago
Makefile	PM: Remove legacy PM	17 years ago
console.c	PM/gxfb: add hook to PM console layer that allows disabling of suspend VT switch	17 years ago
disk.c	PM: Introduce PM_EVENT_HIBERNATE callback state	17 years ago
main.c	Suspend: Invoke suspend notifications after console switch	17 years ago
power.h	Suspend: Add config option to disable the freezer if architecture wants that	17 years ago
poweroff.c	…
process.c	Freezer: Introduce PF_FREEZER_NOSIG	17 years ago
snapshot.c	Hibernation: Fix mark_nosave_pages()	17 years ago
swap.c	Hibernation: Update messages	17 years ago
swsusp.c	Hibernation: Update messages	17 years ago
user.c	snapshot: Use pm_mutex for mutual exclusion	17 years ago