On 2020-06-12 12:24, Matthew Wilcox wrote:
On Fri, May 29, 2020 at 04:43:08PM -0700, John Hubbard wrote:
+CASE 5: Pinning in order to write to the data within the page
+-
+Even though neither DMA nor Direct IO is involved, just a simple
On Fri, May 29, 2020 at 04:43:08PM -0700, John Hubbard wrote:
> +CASE 5: Pinning in order to write to the data within the page
> +-
> +Even though neither DMA nor Direct IO is involved, just a simple case of
> "pin,
> +access page's data,
On 2020-05-31 00:11, Souptick Joarder wrote:
...
diff --git a/Documentation/core-api/pin_user_pages.rst
b/Documentation/core-api/pin_user_pages.rst
index 4675b04e8829..b9f2688a2c67 100644
--- a/Documentation/core-api/pin_user_pages.rst
+++ b/Documentation/core-api/pin_user_pages.rst
@@ -171,6 +1
On Sat, May 30, 2020 at 5:13 AM John Hubbard wrote:
>
> There are four cases listed in pin_user_pages.rst. These are
> intended to help developers figure out whether to use
> get_user_pages*(), or pin_user_pages*(). However, the four cases
> do not cover all the situations. For example, drivers/vh
There are four cases listed in pin_user_pages.rst. These are
intended to help developers figure out whether to use
get_user_pages*(), or pin_user_pages*(). However, the four cases
do not cover all the situations. For example, drivers/vhost/vhost.c
has a "pin, write to page, set page dirty, unpin" c
