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vdso/datastore: Rename data pages variable

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An upcoming change will make this a file-scoped variable, for which it
should have a clearer name.

Rename the variable to prepare for that.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Nam Cao <namcao@linutronix.de>
Link: https://patch.msgid.link/20260630-vdso-mlockall-v4-1-6c93708ce723@linutronix.de
This commit is contained in:
Thomas Weißschuh
2026-07-07 23:52:52 +02:00
committed by Thomas Gleixner
parent 02475538be
commit ff868f43eb
1 changed files with 8 additions and 8 deletions
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lib/vdso/datastore.c
+8 -8
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@@ -32,7 +32,7 @@ struct vdso_arch_data *vdso_k_arch_data __ro_after_init =
void __init vdso_setup_data_pages(void)
{
unsigned int order = get_order(VDSO_NR_PAGES * PAGE_SIZE);
struct page *pages;
struct page *vdso_data_pages;
/*
* Allocate the data pages dynamically. SPARC does not support mapping
@@ -42,24 +42,24 @@ void __init vdso_setup_data_pages(void)
* Do not use folios. In time namespaces the pages are mapped in a different order
* to userspace, which is not handled by the folio optimizations in finish_fault().
*/
pages = alloc_pages(GFP_KERNEL, order);
if (!pages)
vdso_data_pages = alloc_pages(GFP_KERNEL, order);
if (!vdso_data_pages)
panic("Unable to allocate VDSO storage pages");
/* The pages are mapped one-by-one into userspace and each one needs to be refcounted. */
split_page(pages, order);
split_page(vdso_data_pages, order);
/* Move the data already written by other subsystems to the new pages */
memcpy(page_address(pages), vdso_initdata, VDSO_NR_PAGES * PAGE_SIZE);
memcpy(page_address(vdso_data_pages), vdso_initdata, VDSO_NR_PAGES * PAGE_SIZE);
if (IS_ENABLED(CONFIG_GENERIC_GETTIMEOFDAY))
vdso_k_time_data = page_address(pages + VDSO_TIME_PAGE_OFFSET);
vdso_k_time_data = page_address(vdso_data_pages + VDSO_TIME_PAGE_OFFSET);
if (IS_ENABLED(CONFIG_VDSO_GETRANDOM))
vdso_k_rng_data = page_address(pages + VDSO_RNG_PAGE_OFFSET);
vdso_k_rng_data = page_address(vdso_data_pages + VDSO_RNG_PAGE_OFFSET);
if (IS_ENABLED(CONFIG_ARCH_HAS_VDSO_ARCH_DATA))
vdso_k_arch_data = page_address(pages + VDSO_ARCH_PAGES_START);
vdso_k_arch_data = page_address(vdso_data_pages + VDSO_ARCH_PAGES_START);
}
static vm_fault_t vvar_fault(const struct vm_special_mapping *sm,