mirror of
https://github.com/torvalds/linux.git
synced 2026-08-04 14:27:00 +02:00
0b31a3cef4
Let's get rid of another follow_page() user and perform the conversion under PTL: Note that this is also what follow_page_pte() ends up doing. Unfortunately we cannot currently optimize out the additional reference, because arch_make_folio_accessible() must be called with a raised refcount to protect against concurrent conversion to secure. We can just move the arch_make_folio_accessible() under the PTL, like follow_page_pte() would. We'll effectively drop the "writable" check implied by FOLL_WRITE: follow_page_pte() would also not check that when calling arch_make_folio_accessible(), so there is no good reason for doing that here. We'll lose the secretmem check from follow_page() as well, about which we shouldn't really care. Link: https://lkml.kernel.org/r/20240802155524.517137-10-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Janosch Frank <frankja@linux.ibm.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matthew Wilcox <willy@infradead.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|---|---|---|
| .. | ||
| alpha | ||
| arc | ||
| arm | ||
| arm64 | ||
| csky | ||
| hexagon | ||
| loongarch | ||
| m68k | ||
| microblaze | ||
| mips | ||
| nios2 | ||
| openrisc | ||
| parisc | ||
| powerpc | ||
| riscv | ||
| s390 | ||
| sh | ||
| sparc | ||
| um | ||
| x86 | ||
| xtensa | ||
| .gitignore | ||
| Kconfig | ||