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-rw-r--r--fs/bcachefs/darray.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/bcachefs/darray.c b/fs/bcachefs/darray.c
new file mode 100644
index 0000000000..ac35b8b705
--- /dev/null
+++ b/fs/bcachefs/darray.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/log2.h>
+#include <linux/slab.h>
+#include "darray.h"
+
+int __bch2_darray_resize(darray_char *d, size_t element_size, size_t new_size, gfp_t gfp)
+{
+ if (new_size > d->size) {
+ new_size = roundup_pow_of_two(new_size);
+
+ void *data = kvmalloc_array(new_size, element_size, gfp);
+ if (!data)
+ return -ENOMEM;
+
+ memcpy(data, d->data, d->size * element_size);
+ if (d->data != d->preallocated)
+ kvfree(d->data);
+ d->data = data;
+ d->size = new_size;
+ }
+
+ return 0;
+}