Suren Baghdasaryan 4089eef0e6 mm: drop per-VMA lock when returning VM_FAULT_RETRY or VM_FAULT_COMPLETED ... handle_mm_fault returning VM_FAULT_RETRY or VM_FAULT_COMPLETED means mmap_lock has been released. However with per-VMA locks behavior is different and the caller should still release it. To make the rules consistent for the caller, drop the per-VMA lock when returning VM_FAULT_RETRY or VM_FAULT_COMPLETED. Currently the only path returning VM_FAULT_RETRY under per-VMA locks is do_swap_page and no path returns VM_FAULT_COMPLETED for now. [willy@infradead.org: fix riscv] Link: https://lkml.kernel.org/r/CAJuCfpE6GWEx1rPBmNpUfoD5o-gNFz9-UFywzCE2PbEGBiVz7g@mail.gmail.com Link: https://lkml.kernel.org/r/20230630211957.1341547-4-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Acked-by: Peter Xu <peterx@redhat.com> Tested-by: Conor Dooley <conor.dooley@microchip.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <brauner@kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: David Hildenbrand <david@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Hillf Danton <hdanton@sina.com> Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jan Kara <jack@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Josef Bacik <josef@toxicpanda.com> Cc: Laurent Dufour <ldufour@linux.ibm.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Lorenzo Stoakes <lstoakes@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Michel Lespinasse <michel@lespinasse.org> Cc: Minchan Kim <minchan@google.com> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Punit Agrawal <punit.agrawal@bytedance.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2023-08-24 16:20:17 -07:00
..
cacheflush.c	riscv: mm: mark CBO relate initialization funcs as __init	2023-07-06 10:32:04 -07:00
context.c	riscv: mm: Fix incorrect ASID argument when flushing TLB	2023-03-21 15:55:19 -07:00
dma-noncoherent.c	riscv: mm: mark noncoherent_supported as __ro_after_init	2023-07-06 10:32:05 -07:00
extable.c	riscv: extable: fix err reg writing in dedicated uaccess handler	2022-02-08 17:02:47 -08:00
fault.c	mm: drop per-VMA lock when returning VM_FAULT_RETRY or VM_FAULT_COMPLETED	2023-08-24 16:20:17 -07:00
hugetlbpage.c	mm: riscv: fix an unsafe pte read in huge_pte_alloc()	2023-07-05 07:24:17 -07:00
init.c	riscv: convert alloc_{pmd, pte}_late() to use ptdescs	2023-08-21 13:37:57 -07:00
kasan_init.c	riscv: Rework kasan population functions	2023-04-19 07:24:50 -07:00
Makefile	riscv: mm: stub extable related functions/macros for !MMU	2023-06-14 07:17:45 -07:00
pageattr.c	mm: enable page walking API to lock vmas during the walk	2023-08-21 13:07:20 -07:00
pgtable.c	riscv: mm: Implement pmdp_collapse_flush for THP	2023-02-01 20:52:09 -08:00
physaddr.c	riscv: Use PUD/P4D/PGD pages for the linear mapping	2023-04-18 20:43:04 -07:00
pmem.c	RISC-V: Implement arch specific PMEM APIs	2022-12-08 15:43:59 -08:00
ptdump.c	riscv: Fix ptdump when KASAN is enabled	2023-04-19 07:24:53 -07:00
tlbflush.c	RISC-V: Use IPIs for remote TLB flush when possible	2023-04-08 11:26:24 +01:00