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| author |   Ilya Dryomov <idryomov@gmail.com> | 2018-09-28 15:38:34 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2018-10-22 10:28:21 +0200 |
| commit | 33165d472310262d8c79c7e4d1a17dc60cea7e35 (patch) | |
| tree | bf498d59251d10a2f8c603ef28200d7d42d6bee4 /net/ceph/pagelist.c | |
| parent | libceph: osd_req_op_cls_init() doesn't need to take opcode (diff) | |
| download | wireguard-linux-33165d472310262d8c79c7e4d1a17dc60cea7e35.tar.xz wireguard-linux-33165d472310262d8c79c7e4d1a17dc60cea7e35.zip | |
libceph: introduce ceph_pagelist_alloc()
struct ceph_pagelist cannot be embedded into anything else because it
has its own refcount. Merge allocation and initialization together.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'net/ceph/pagelist.c')
| -rw-r--r-- | net/ceph/pagelist.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/net/ceph/pagelist.c b/net/ceph/pagelist.c index 2ea0564771d2..65e34f78b05d 100644 --- a/net/ceph/pagelist.c +++ b/net/ceph/pagelist.c @@ -6,6 +6,26 @@ #include <linux/highmem.h> #include <linux/ceph/pagelist.h> +struct ceph_pagelist *ceph_pagelist_alloc(gfp_t gfp_flags) +{ + struct ceph_pagelist *pl; + + pl = kmalloc(sizeof(*pl), gfp_flags); + if (!pl) + return NULL; + + INIT_LIST_HEAD(&pl->head); + pl->mapped_tail = NULL; + pl->length = 0; + pl->room = 0; + INIT_LIST_HEAD(&pl->free_list); + pl->num_pages_free = 0; + refcount_set(&pl->refcnt, 1); + + return pl; +} +EXPORT_SYMBOL(ceph_pagelist_alloc); + static void ceph_pagelist_unmap_tail(struct ceph_pagelist *pl) { if (pl->mapped_tail) { |