diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2007-05-06 14:50:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-07 12:12:59 -0700 |
| commit | 0709db6072c2e799eba1aa61bd19e0d7f38aa2cd (patch) | |
| tree | e348c73adbfdcb46b05b23f36dc420ecdd62ca8a /kernel/power/user.c | |
| parent | 1525a2ad76f991eba9755f75c9b6d4d97abad25e (diff) | |
| download | lwn-0709db6072c2e799eba1aa61bd19e0d7f38aa2cd.tar.gz lwn-0709db6072c2e799eba1aa61bd19e0d7f38aa2cd.zip | |
swsusp: use GFP_KERNEL for creating basic data structures
Make swsusp call create_basic_memory_bitmaps() before processes are frozen, so
that GFP_KERNEL allocations can be made in it. Additionally, ensure that the
swsusp's userland interface won't be used while either pm_suspend_disk() or
software_resume() is being executed.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/power/user.c')
| -rw-r--r-- | kernel/power/user.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c index bd1771f7a64e..72dbfd01408e 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -40,21 +40,21 @@ static struct snapshot_data { char platform_suspend; } snapshot_state; -static atomic_t device_available = ATOMIC_INIT(1); +atomic_t snapshot_device_available = ATOMIC_INIT(1); static int snapshot_open(struct inode *inode, struct file *filp) { struct snapshot_data *data; - if (!atomic_add_unless(&device_available, -1, 0)) + if (!atomic_add_unless(&snapshot_device_available, -1, 0)) return -EBUSY; if ((filp->f_flags & O_ACCMODE) == O_RDWR) { - atomic_inc(&device_available); + atomic_inc(&snapshot_device_available); return -ENOSYS; } if(create_basic_memory_bitmaps()) { - atomic_inc(&device_available); + atomic_inc(&snapshot_device_available); return -ENOMEM; } nonseekable_open(inode, filp); @@ -92,7 +92,7 @@ static int snapshot_release(struct inode *inode, struct file *filp) enable_nonboot_cpus(); mutex_unlock(&pm_mutex); } - atomic_inc(&device_available); + atomic_inc(&snapshot_device_available); return 0; } |