diff options
| author | Matthew Wilcox (Oracle) <[email protected]> | 2023-07-24 18:54:10 +0000 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2023-08-18 17:12:53 +0000 |
| commit | 063e60d806151f3733acabccb62a463d55fac469 (patch) | |
| tree | 67db5dafc4d71cc8e29641f2091d15534f59f504 /mm/debug_vm_pgtable.c | |
| parent | mm: handle swap and NUMA PTE faults under the VMA lock (diff) | |
| download | kernel-063e60d806151f3733acabccb62a463d55fac469.tar.gz kernel-063e60d806151f3733acabccb62a463d55fac469.zip | |
mm: handle faults that merely update the accessed bit under the VMA lock
Move FAULT_FLAG_VMA_LOCK check out of handle_pte_fault(). This should
have a significant performance improvement for mmaped files. Write faults
(on read-only shared pages) still take the mmap lock as we do not want to
audit all the implementations of ->pfn_mkwrite() and ->page_mkwrite().
However write-faults on private mappings are handled under the VMA lock.
[[email protected]: address "suspicious RCU usage" warning]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Cc: Arjun Roy <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Punit Agrawal <[email protected]>
Cc: Suren Baghdasaryan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'mm/debug_vm_pgtable.c')
0 files changed, 0 insertions, 0 deletions