[PATCH v3 02/16] mm: add documentation for the mmap_prepare file operation callback

Vlastimil Babka (SUSE) vbabka at kernel.org
Fri Mar 20 10:23:49 PDT 2026


On 3/19/26 19:23, Lorenzo Stoakes (Oracle) wrote:
> This documentation makes it easier for a driver/file system implementer to
> correctly use this callback.
> 
> It covers the fundamentals, whilst intentionally leaving the less lovely
> possible actions one might take undocumented (for instance - the
> success_hook, error_hook fields in mmap_action).
> 
> The document also covers the new VMA flags implementation which is the
> only one which will work correctly with mmap_prepare.
> 
> Signed-off-by: Lorenzo Stoakes (Oracle) <ljs at kernel.org>

Acked-by: Vlastimil Babka (SUSE) <vbabka at kernel.org>




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