On 3/19/26 19:23, Lorenzo Stoakes (Oracle) wrote: > Rather than passing arbitrary fields, pass a vm_area_desc pointer to mmap > prepare functions to mmap prepare, and an action and vma pointer to mmap > complete in order to put all the action-specific logic in the function > actually doing the work. > > Additionally, allow mmap prepare functions to return an error so we can > error out as soon as possible if there is something logically incorrect in > the input. > > Update remap_pfn_range_prepare() to properly check the input range for the > CoW case. > > Also remove io_remap_pfn_range_complete(), as we can simply set up the > fields correctly in io_remap_pfn_range_prepare() and use > remap_pfn_range_complete() for this. > > While we're here, make remap_pfn_range_prepare_vma() a little neater, and > pass mmap_action directly to call_action_complete(). > > Then, update compat_vma_mmap() to perform its logic directly, as > __compat_vma_map() is not used by anything so we don't need to export it. > > Also update compat_vma_mmap() to use vfs_mmap_prepare() rather than > calling the mmap_prepare op directly. > > Finally, update the VMA userland tests to reflect the changes. > > Signed-off-by: Lorenzo Stoakes (Oracle) <[email protected]>
Acked-by: Vlastimil Babka (SUSE) <[email protected]>
