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| author | Seth Jennings | 2012-07-02 23:15:51 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2012-07-09 20:34:59 +0200 |
| commit | 166cfda752ca22eb6912614993b85f9a997dbd8f (patch) | |
| tree | 77a446849a0fe4e9511e5ba8c71c742e846589ca /drivers/staging/zsmalloc/zsmalloc-main.c | |
| parent | staging: zsmalloc: add single-page object fastpath in unmap (diff) | |
| download | kernel-qcow2-linux-166cfda752ca22eb6912614993b85f9a997dbd8f.tar.gz kernel-qcow2-linux-166cfda752ca22eb6912614993b85f9a997dbd8f.tar.xz kernel-qcow2-linux-166cfda752ca22eb6912614993b85f9a997dbd8f.zip | |
staging: zsmalloc: add details to zs_map_object boiler plate
Add information on the usage limits of zs_map_object()
Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/zsmalloc/zsmalloc-main.c')
| -rw-r--r-- | drivers/staging/zsmalloc/zsmalloc-main.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/staging/zsmalloc/zsmalloc-main.c b/drivers/staging/zsmalloc/zsmalloc-main.c index 4942d419074b..abf7c13c89c8 100644 --- a/drivers/staging/zsmalloc/zsmalloc-main.c +++ b/drivers/staging/zsmalloc/zsmalloc-main.c @@ -747,7 +747,12 @@ EXPORT_SYMBOL_GPL(zs_free); * * Before using an object allocated from zs_malloc, it must be mapped using * this function. When done with the object, it must be unmapped using - * zs_unmap_object + * zs_unmap_object. + * + * Only one object can be mapped per cpu at a time. There is no protection + * against nested mappings. + * + * This function returns with preemption and page faults disabled. */ void *zs_map_object(struct zs_pool *pool, unsigned long handle) { |