diff options
| author |   Ilya Dryomov <ilya.dryomov@inktank.com> | 2014-01-09 20:08:21 +0200 |
|---|---|---|
| committer | Ilya Dryomov <ilya.dryomov@inktank.com> | 2014-01-26 12:34:23 +0200 |
| commit | eeb0bed5572b1282009dfc2635604df5a35d1a02 (patch) | |
| tree | 6b90792affac20b326daa59a59227766f746ee2f /include/linux/ceph | |
| parent | libceph: support CEPH_FEATURE_EXPORT_PEER (diff) | |
| download | linux-dev-eeb0bed5572b1282009dfc2635604df5a35d1a02.tar.xz linux-dev-eeb0bed5572b1282009dfc2635604df5a35d1a02.zip | |
libceph: add ceph_kv{malloc,free}() and switch to them
Encapsulate kmalloc vs vmalloc memory allocation and freeing logic into
two helpers, ceph_kvmalloc() and ceph_kvfree(), and switch to them.
ceph_kvmalloc() kmalloc()'s a maximum of 8 pages, anything bigger is
vmalloc()'ed with __GFP_HIGHMEM set. This changes the existing
behaviour:
- for buffers (ceph_buffer_new()), from trying to kmalloc() everything
and using vmalloc() just as a fallback
- for messages (ceph_msg_new()), from going to vmalloc() for anything
bigger than a page
- for messages (ceph_msg_new()), from disallowing vmalloc() to use high
memory
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'include/linux/ceph')
| -rw-r--r-- | include/linux/ceph/buffer.h | 1 | ||||
| -rw-r--r-- | include/linux/ceph/libceph.h | 11 | ||||
| -rw-r--r-- | include/linux/ceph/messenger.h | 1 |
3 files changed, 7 insertions, 6 deletions
diff --git a/include/linux/ceph/buffer.h b/include/linux/ceph/buffer.h index 58d19014068f..07ad423cc37f 100644 --- a/include/linux/ceph/buffer.h +++ b/include/linux/ceph/buffer.h @@ -17,7 +17,6 @@ struct ceph_buffer { struct kref kref; struct kvec vec; size_t alloc_len; - bool is_vmalloc; }; extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp); diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 7d704db60cbb..2f49aa4c4f7f 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -173,15 +173,18 @@ static inline int calc_pages_for(u64 off, u64 len) (off >> PAGE_CACHE_SHIFT); } +extern struct kmem_cache *ceph_inode_cachep; +extern struct kmem_cache *ceph_cap_cachep; +extern struct kmem_cache *ceph_dentry_cachep; +extern struct kmem_cache *ceph_file_cachep; + /* ceph_common.c */ extern bool libceph_compatible(void *data); extern const char *ceph_msg_type_name(int type); extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid); -extern struct kmem_cache *ceph_inode_cachep; -extern struct kmem_cache *ceph_cap_cachep; -extern struct kmem_cache *ceph_dentry_cachep; -extern struct kmem_cache *ceph_file_cachep; +extern void *ceph_kvmalloc(size_t size, gfp_t flags); +extern void ceph_kvfree(const void *ptr); extern struct ceph_options *ceph_parse_options(char *options, const char *dev_name, const char *dev_name_end, diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index 861138f7c161..20ee8b63a968 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -154,7 +154,6 @@ struct ceph_msg { struct list_head list_head; /* links for connection lists */ struct kref kref; - bool front_is_vmalloc; bool more_to_follow; bool needs_out_seq; int front_alloc_len; |