git.sesse.net Git - bcachefs-tools-debian/blob - linux/darray.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * (C) 2022-2024 Kent Overstreet <kent.overstreet@linux.dev>
   4  */
   5
   6 #include <linux/darray.h>
   7 #include <linux/log2.h>
   8 #include <linux/slab.h>
   9
  10 int __darray_resize_slowpath(darray_char *d, size_t element_size, size_t new_size, gfp_t gfp)
  11 {
  12         if (new_size > d->size) {
  13                 new_size = roundup_pow_of_two(new_size);
  14
  15                 void *data = kvmalloc_array(new_size, element_size, gfp);
  16                 if (!data)
  17                         return -ENOMEM;
  18
  19                 memcpy(data, d->data, d->size * element_size);
  20                 if (d->data != d->preallocated)
  21                         kvfree(d->data);
  22                 d->data = data;
  23                 d->size = new_size;
  24         }
  25
  26         return 0;
  27 }