diff options
| author | Ira Weiny <ira.weiny@intel.com> | 2019-05-13 17:17:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 09:47:46 -0700 |
| commit | 73b0140bf0fe9df90fb267c00673c4b9bf285430 (patch) | |
| tree | 2076056c96b291bc875064b4e45ee4a6228f79b8 /drivers/misc | |
| parent | b798bec4741bdd80224214fdd004c8e52698e425 (diff) | |
mm/gup: change GUP fast to use flags rather than a write 'bool'
To facilitate additional options to get_user_pages_fast() change the
singular write parameter to be gup_flags.
This patch does not change any functionality. New functionality will
follow in subsequent patches.
Some of the get_user_pages_fast() call sites were unchanged because they
already passed FOLL_WRITE or 0 for the write parameter.
NOTE: It was suggested to change the ordering of the get_user_pages_fast()
arguments to ensure that callers were converted. This breaks the current
GUP call site convention of having the returned pages be the final
parameter. So the suggestion was rejected.
Link: http://lkml.kernel.org/r/20190328084422.29911-4-ira.weiny@intel.com
Link: http://lkml.kernel.org/r/20190317183438.2057-4-ira.weiny@intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Mike Marshall <hubcap@omnibond.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/genwqe/card_utils.c | 2 | ||||
| -rw-r--r-- | drivers/misc/vmw_vmci/vmci_host.c | 2 | ||||
| -rw-r--r-- | drivers/misc/vmw_vmci/vmci_queue_pair.c | 6 |
3 files changed, 6 insertions, 4 deletions
diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c index 25265fd0fd6e..89cff9d1012b 100644 --- a/drivers/misc/genwqe/card_utils.c +++ b/drivers/misc/genwqe/card_utils.c @@ -603,7 +603,7 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, void *uaddr, /* pin user pages in memory */ rc = get_user_pages_fast(data & PAGE_MASK, /* page aligned addr */ m->nr_pages, - m->write, /* readable/writable */ + m->write ? FOLL_WRITE : 0, /* readable/writable */ m->page_list); /* ptrs to pages */ if (rc < 0) goto fail_get_user_pages; diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c index 997f92543dd4..422d08da3244 100644 --- a/drivers/misc/vmw_vmci/vmci_host.c +++ b/drivers/misc/vmw_vmci/vmci_host.c @@ -242,7 +242,7 @@ static int vmci_host_setup_notify(struct vmci_ctx *context, /* * Lock physical page backing a given user VA. */ - retval = get_user_pages_fast(uva, 1, 1, &context->notify_page); + retval = get_user_pages_fast(uva, 1, FOLL_WRITE, &context->notify_page); if (retval != 1) { context->notify_page = NULL; return VMCI_ERROR_GENERIC; diff --git a/drivers/misc/vmw_vmci/vmci_queue_pair.c b/drivers/misc/vmw_vmci/vmci_queue_pair.c index f5f1aac9d163..1174735f003d 100644 --- a/drivers/misc/vmw_vmci/vmci_queue_pair.c +++ b/drivers/misc/vmw_vmci/vmci_queue_pair.c @@ -659,7 +659,8 @@ static int qp_host_get_user_memory(u64 produce_uva, int err = VMCI_SUCCESS; retval = get_user_pages_fast((uintptr_t) produce_uva, - produce_q->kernel_if->num_pages, 1, + produce_q->kernel_if->num_pages, + FOLL_WRITE, produce_q->kernel_if->u.h.header_page); if (retval < (int)produce_q->kernel_if->num_pages) { pr_debug("get_user_pages_fast(produce) failed (retval=%d)", @@ -671,7 +672,8 @@ static int qp_host_get_user_memory(u64 produce_uva, } retval = get_user_pages_fast((uintptr_t) consume_uva, - consume_q->kernel_if->num_pages, 1, + consume_q->kernel_if->num_pages, + FOLL_WRITE, consume_q->kernel_if->u.h.header_page); if (retval < (int)consume_q->kernel_if->num_pages) { pr_debug("get_user_pages_fast(consume) failed (retval=%d)", |