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| author | Ingo Molnar <mingo@elte.hu> | 2011-05-12 09:36:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-05-12 09:36:18 +0200 |
| commit | 9cb5baba5e3acba0994ad899ee908799104c9965 (patch) | |
| tree | d5ff16000256a0bf56279926e6114b4603ede2b4 /drivers/s390/block/dasd_devmap.c | |
| parent | 7142d17e8f935fa842e9f6eece2281b6d41625d6 (diff) | |
| parent | 693d92a1bbc9e42681c42ed190bd42b636ca876f (diff) | |
| download | kernel_samsung_smdk4412-9cb5baba5e3acba0994ad899ee908799104c9965.zip kernel_samsung_smdk4412-9cb5baba5e3acba0994ad899ee908799104c9965.tar.gz kernel_samsung_smdk4412-9cb5baba5e3acba0994ad899ee908799104c9965.tar.bz2 | |
Merge commit 'v2.6.39-rc7' into sched/core
Diffstat (limited to 'drivers/s390/block/dasd_devmap.c')
| -rw-r--r-- | drivers/s390/block/dasd_devmap.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index 42e1bf3..d71511c 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -674,6 +674,36 @@ dasd_device_from_cdev(struct ccw_device *cdev) return device; } +void dasd_add_link_to_gendisk(struct gendisk *gdp, struct dasd_device *device) +{ + struct dasd_devmap *devmap; + + devmap = dasd_find_busid(dev_name(&device->cdev->dev)); + if (IS_ERR(devmap)) + return; + spin_lock(&dasd_devmap_lock); + gdp->private_data = devmap; + spin_unlock(&dasd_devmap_lock); +} + +struct dasd_device *dasd_device_from_gendisk(struct gendisk *gdp) +{ + struct dasd_device *device; + struct dasd_devmap *devmap; + + if (!gdp->private_data) + return NULL; + device = NULL; + spin_lock(&dasd_devmap_lock); + devmap = gdp->private_data; + if (devmap && devmap->device) { + device = devmap->device; + dasd_get_device(device); + } + spin_unlock(&dasd_devmap_lock); + return device; +} + /* * SECTION: files in sysfs */ |