diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-31 20:20:29 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-31 20:20:29 +1000 |
| commit | bb272221e9db79f13d454e1f3fb6b05013be985e (patch) | |
| tree | 36f4acc50e3fabac71fadd34c720c0a6011db470 /mm/vmalloc.c | |
| parent | 253fd51e2f533552ae35a0c661705da6c4842c1b (diff) | |
| parent | 5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff) | |
Merge tag 'v4.13-rc1' into fixes
The fixes branch is based off a random pre-rc1 commit, because we had
some fixes that needed to go in before rc1 was released.
However we now need to fix some code that went in after that point, but
before rc1, so merge rc1 to get that code into fixes so we can fix it!
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 6211a807cb31..8698c1c86c4d 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -325,6 +325,7 @@ EXPORT_SYMBOL(vmalloc_to_pfn); /*** Global kva allocator ***/ +#define VM_LAZY_FREE 0x02 #define VM_VM_AREA 0x04 static DEFINE_SPINLOCK(vmap_area_lock); @@ -1497,6 +1498,7 @@ struct vm_struct *remove_vm_area(const void *addr) spin_lock(&vmap_area_lock); va->vm = NULL; va->flags &= ~VM_VM_AREA; + va->flags |= VM_LAZY_FREE; spin_unlock(&vmap_area_lock); vmap_debug_free_range(va->va_start, va->va_end); @@ -1793,7 +1795,7 @@ fail: * allocator with @gfp_mask flags. Map them into contiguous * kernel virtual space, using a pagetable protection of @prot. * - * Reclaim modifiers in @gfp_mask - __GFP_NORETRY, __GFP_REPEAT + * Reclaim modifiers in @gfp_mask - __GFP_NORETRY, __GFP_RETRY_MAYFAIL * and __GFP_NOFAIL are not supported * * Any use of gfp flags outside of GFP_KERNEL should be consulted @@ -2704,8 +2706,14 @@ static int s_show(struct seq_file *m, void *p) * s_show can encounter race with remove_vm_area, !VM_VM_AREA on * behalf of vmap area is being tear down or vm_map_ram allocation. */ - if (!(va->flags & VM_VM_AREA)) + if (!(va->flags & VM_VM_AREA)) { + seq_printf(m, "0x%pK-0x%pK %7ld %s\n", + (void *)va->va_start, (void *)va->va_end, + va->va_end - va->va_start, + va->flags & VM_LAZY_FREE ? "unpurged vm_area" : "vm_map_ram"); + return 0; + } v = va->vm; |