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(parent: 4fdccaa) | patch
gup: Introduce FOLL_NOFAULT flag to disable page faults
authorAndreas Gruenbacher <agruenba@redhat.com>
Tue, 17 Aug 2021 20:52:08 +0000 (22:52 +0200)
committerAndreas Gruenbacher <agruenba@redhat.com>
Sun, 24 Oct 2021 13:26:05 +0000 (15:26 +0200)
commit55b8fe703bc51200d4698596c90813453b35ae63
tree9a7f9a0bcf98aea2fe8f3c7dcf483c75ffd6f6eatree | snapshot
parent4fdccaa0d184c202f98d73b24e3ec8eeee88ab8dcommit | diff
gup: Introduce FOLL_NOFAULT flag to disable page faults

Introduce a new FOLL_NOFAULT flag that causes get_user_pages to return
-EFAULT when it would otherwise trigger a page fault.  This is roughly
similar to FOLL_FAST_ONLY but available on all architectures, and less
fragile.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
include/linux/mm.h diff | blob | history
mm/gup.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git