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099dc5c29d
Add support to darray for preallocating some number of elements. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
25 lines
522 B
C
25 lines
522 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/log2.h>
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#include <linux/slab.h>
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#include "darray.h"
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int __bch2_darray_resize(darray_char *d, size_t element_size, size_t new_size, gfp_t gfp)
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{
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if (new_size > d->size) {
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new_size = roundup_pow_of_two(new_size);
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void *data = kvmalloc_array(new_size, element_size, gfp);
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if (!data)
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return -ENOMEM;
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memcpy(data, d->data, d->size * element_size);
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if (d->data != d->preallocated)
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kvfree(d->data);
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d->data = data;
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d->size = new_size;
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}
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return 0;
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}
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