lustre/ost/ost_internal.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  */
   4
   5 #ifndef OST_INTERNAL_H
   6 #define OST_INTERNAL_H
   7
   8 #ifdef LPROCFS
   9 extern void ost_print_req(void *seq_file, struct ptlrpc_request *req);
  10 #else
  11 # define ost_print_req NULL
  12 #endif
  13
  14 /*
  15  * tunables for per-thread page pool (bug 5137)
  16  */
  17 enum {
  18         /*
  19          * pool size in pages
  20          */
  21         OST_THREAD_POOL_SIZE = PTLRPC_MAX_BRW_PAGES,
  22         /*
  23          * GFP mask used to allocate pages for pool
  24          */
  25         OST_THREAD_POOL_GFP  = GFP_HIGHUSER
  26 };
  27
  28 struct page;
  29 struct niobuf_local;
  30 struct niobuf_remote;
  31 struct ptlrpc_request;
  32
  33 /*
  34  * struct ost_thread_local_cache is allocated and initialized for each OST
  35  * thread by ost_thread_init().
  36  */
  37 struct ost_thread_local_cache {
  38         /*
  39          * pool of pages and nio buffers used by write-path
  40          */
  41         struct page          *page  [OST_THREAD_POOL_SIZE];
  42         struct niobuf_local   local [OST_THREAD_POOL_SIZE];
  43         struct niobuf_remote  remote[OST_THREAD_POOL_SIZE];
  44 };
  45
  46 struct ost_thread_local_cache *ost_tls(struct ptlrpc_request *r);
  47
  48 #ifdef HAVE_QUOTA_SUPPORT
  49 /* Quota stuff */
  50 int ost_quotacheck(struct ptlrpc_request *req);
  51 int ost_quotactl(struct ptlrpc_request *req);
  52 #else
  53 static inline int ost_quotacheck(struct ptlrpc_request *req)
  54 {
  55         req->rq_status = -ENOTSUPP;
  56         return -ENOTSUPP;
  57 }
  58 static inline int ost_quotactl(struct ptlrpc_request *req)
  59 {
  60         req->rq_status = -ENOTSUPP;
  61         return -ENOTSUPP;
  62 }
  63 #endif
  64
  65 #endif /* OST_INTERNAL_H */