5 use core::alloc::{GlobalAlloc, Layout};
18 unsafe fn krealloc_aligned(ptr: *mut u8, new_layout: Layout, flags: bindings::gfp_t) -> *mut u8 {  in krealloc_aligned()  argument
19     // Customized layouts from `Layout::from_size_align()` can have size < align, so pad first.  in krealloc_aligned()
20     let layout = new_layout.pad_to_align();  in krealloc_aligned()  localVariable
22     let mut size = layout.size();  in krealloc_aligned()
24     if layout.align() > bindings::BINDINGS_ARCH_SLAB_MINALIGN {  in krealloc_aligned()
29         // Note that `layout.size()` (after padding) is guaranteed to be a multiple of  in krealloc_aligned()
30         // `layout.align()`, so `next_power_of_two` gives enough alignment guarantee.  in krealloc_aligned()
37     // - `size` is greater than 0 since it's either a `layout.size()` (which cannot be zero  in krealloc_aligned()
43     unsafe fn alloc(&self, layout: Layout) -> *mut u8 {  in alloc()
44         // SAFETY: `ptr::null_mut()` is null and `layout` has a non-zero size by the function safety  in alloc()
46         unsafe { krealloc_aligned(ptr::null_mut(), layout, bindings::GFP_KERNEL) }  in alloc()
49     unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {  in dealloc()  argument
55     unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {  in realloc()  argument
57         // - `new_size`, when rounded up to the nearest multiple of `layout.align()`, will not  in realloc()
59         // - `layout.align()` is a proper alignment (i.e. not zero and must be a power of two).  in realloc()
60         let layout = unsafe { Layout::from_size_align_unchecked(new_size, layout.align()) };  in realloc()  localVariable
65         // - the size of `layout` is not zero because `new_size` is not zero by the function safety  in realloc()
67         unsafe { krealloc_aligned(ptr, layout, bindings::GFP_KERNEL) }  in realloc()
70     unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {  in alloc_zeroed()
71         // SAFETY: `ptr::null_mut()` is null and `layout` has a non-zero size by the function safety  in alloc_zeroed()
76                 layout,  in alloc_zeroed()