2 #include "ceph_debug.h"
4 #include <linux/slab.h>
9 struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp)
11 struct ceph_buffer *b;
13 b = kmalloc(sizeof(*b), gfp);
17 b->vec.iov_base = kmalloc(len, gfp | __GFP_NOWARN);
18 if (b->vec.iov_base) {
19 b->is_vmalloc = false;
21 b->vec.iov_base = __vmalloc(len, gfp, PAGE_KERNEL);
22 if (!b->vec.iov_base) {
32 dout("buffer_new %p\n", b);
36 void ceph_buffer_release(struct kref *kref)
38 struct ceph_buffer *b = container_of(kref, struct ceph_buffer, kref);
40 dout("buffer_release %p\n", b);
41 if (b->vec.iov_base) {
43 vfree(b->vec.iov_base);
45 kfree(b->vec.iov_base);
50 int ceph_buffer_alloc(struct ceph_buffer *b, int len, gfp_t gfp)
52 b->vec.iov_base = kmalloc(len, gfp | __GFP_NOWARN);
53 if (b->vec.iov_base) {
54 b->is_vmalloc = false;
56 b->vec.iov_base = __vmalloc(len, gfp, PAGE_KERNEL);
66 int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end)
70 ceph_decode_need(p, end, sizeof(u32), bad);
71 len = ceph_decode_32(p);
72 dout("decode_buffer len %d\n", (int)len);
73 ceph_decode_need(p, end, len, bad);
74 *b = ceph_buffer_new(len, GFP_NOFS);
77 ceph_decode_copy(p, (*b)->vec.iov_base, len);