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Fuse uring will allocate queue memory using this new function. Signed-off-by: Bernd Schubert cc: Andrew Morton cc: linux-mm@kvack.org Acked-by: Andrew Morton --- include/linux/vmalloc.h | 1 + mm/nommu.c | 6 ++++++ mm/vmalloc.c | 41 +++++++++++++++++++++++++++++++++++++---- 3 files changed, 44 insertions(+), 4 deletions(-) diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 98ea90e90439..e7645702074e 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -141,6 +141,7 @@ static inline unsigned long vmalloc_nr_pages(void) { return 0; } extern void *vmalloc(unsigned long size) __alloc_size(1); extern void *vzalloc(unsigned long size) __alloc_size(1); extern void *vmalloc_user(unsigned long size) __alloc_size(1); +extern void *vmalloc_node_user(unsigned long size, int node) __alloc_size(1); extern void *vmalloc_node(unsigned long size, int node) __alloc_size(1); extern void *vzalloc_node(unsigned long size, int node) __alloc_size(1); extern void *vmalloc_32(unsigned long size) __alloc_size(1); diff --git a/mm/nommu.c b/mm/nommu.c index 5ec8f44e7ce9..207ddf639aa9 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -185,6 +185,12 @@ void *vmalloc_user(unsigned long size) } EXPORT_SYMBOL(vmalloc_user); +void *vmalloc_node_user(unsigned long size, int node) +{ + return __vmalloc_user_flags(size, GFP_KERNEL | __GFP_ZERO); +} +EXPORT_SYMBOL(vmalloc_node_user); + struct page *vmalloc_to_page(const void *addr) { return virt_to_page(addr); diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 68fa001648cc..0ac2f44b2b1f 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -3958,6 +3958,25 @@ void *vzalloc(unsigned long size) } EXPORT_SYMBOL(vzalloc); +/** + * _vmalloc_node_user - allocate zeroed virtually contiguous memory for userspace + * on the given numa node + * @size: allocation size + * @node: numa node + * + * The resulting memory area is zeroed so it can be mapped to userspace + * without leaking data. + * + * Return: pointer to the allocated memory or %NULL on error + */ +static void *_vmalloc_node_user(unsigned long size, int node) +{ + return __vmalloc_node_range(size, SHMLBA, VMALLOC_START, VMALLOC_END, + GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL, + VM_USERMAP, node, + __builtin_return_address(0)); +} + /** * vmalloc_user - allocate zeroed virtually contiguous memory for userspace * @size: allocation size @@ -3969,13 +3988,27 @@ EXPORT_SYMBOL(vzalloc); */ void *vmalloc_user(unsigned long size) { - return __vmalloc_node_range(size, SHMLBA, VMALLOC_START, VMALLOC_END, - GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL, - VM_USERMAP, NUMA_NO_NODE, - __builtin_return_address(0)); + return _vmalloc_node_user(size, NUMA_NO_NODE); } EXPORT_SYMBOL(vmalloc_user); +/** + * vmalloc_user - allocate zeroed virtually contiguous memory for userspace on + * a numa node + * @size: allocation size + * @node: numa node + * + * The resulting memory area is zeroed so it can be mapped to userspace + * without leaking data. + * + * Return: pointer to the allocated memory or %NULL on error + */ +void *vmalloc_node_user(unsigned long size, int node) +{ + return _vmalloc_node_user(size, node); +} +EXPORT_SYMBOL(vmalloc_node_user); + /** * vmalloc_node - allocate memory on a specific node * @size: allocation size -- 2.40.1