diff options
Diffstat (limited to 'Documentation/fb')
| -rw-r--r-- | Documentation/fb/deferred_io.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/fb/deferred_io.txt b/Documentation/fb/deferred_io.txt index 63883a8..7483283 100644 --- a/Documentation/fb/deferred_io.txt +++ b/Documentation/fb/deferred_io.txt @@ -7,10 +7,10 @@ IO. The following example may be a useful explanation of how one such setup works: - userspace app like Xfbdev mmaps framebuffer -- deferred IO and driver sets up nopage and page_mkwrite handlers +- deferred IO and driver sets up fault and page_mkwrite handlers - userspace app tries to write to mmaped vaddress -- we get pagefault and reach nopage handler -- nopage handler finds and returns physical page +- we get pagefault and reach fault handler +- fault handler finds and returns physical page - we get page_mkwrite where we add this page to a list - schedule a workqueue task to be run after a delay - app continues writing to that page with no additional cost. this is |
