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| author | Tejun Heo <tj@kernel.org> | 2009-08-14 07:41:02 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-08-14 07:45:31 +0200 |
| commit | 384be2b18a5f9475eab9ca2bdfa95cc1a04ef59c (patch) | |
| tree | 04c93f391a1b65c8bf8d7ba8643c07d26c26590a /fs/block_dev.c | |
| parent | percpu: add dummy pcpu_lpage_remapped() for !CONFIG_SMP (diff) | |
| parent | percpu: use the right flag for get_vm_area() (diff) | |
| download | linux-384be2b18a5f9475eab9ca2bdfa95cc1a04ef59c.tar.xz linux-384be2b18a5f9475eab9ca2bdfa95cc1a04ef59c.zip | |
Merge branch 'percpu-for-linus' into percpu-for-next
Conflicts:
arch/sparc/kernel/smp_64.c
arch/x86/kernel/cpu/perf_counter.c
arch/x86/kernel/setup_percpu.c
drivers/cpufreq/cpufreq_ondemand.c
mm/percpu.c
Conflicts in core and arch percpu codes are mostly from commit
ed78e1e078dd44249f88b1dd8c76dafb39567161 which substituted many
num_possible_cpus() with nr_cpu_ids. As for-next branch has moved all
the first chunk allocators into mm/percpu.c, the changes are moved
from arch code to mm/percpu.c.
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 3a6d4fb2a329..94dfda24c06e 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -564,6 +564,16 @@ struct block_device *bdget(dev_t dev) EXPORT_SYMBOL(bdget); +/** + * bdgrab -- Grab a reference to an already referenced block device + * @bdev: Block device to grab a reference to. + */ +struct block_device *bdgrab(struct block_device *bdev) +{ + atomic_inc(&bdev->bd_inode->i_count); + return bdev; +} + long nr_blockdev_pages(void) { struct block_device *bdev; |