X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flclient.h;h=8124254c773b4941d301562d962b0547f9d99935;hb=30ef0334bcda45c822a41ff50f2d0aa97b95a69a;hp=1883df6437712085185a2dd6532b798cea6c32ff;hpb=0fabe8d4962e93a0bf0207edb7c0ffe87ba21be7;p=fs%2Flustre-release.git

diff --git a/lustre/include/lclient.h b/lustre/include/lclient.h
index 1883df6..8124254 100644
--- a/lustre/include/lclient.h
+++ b/lustre/include/lclient.h
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -28,6 +26,8 @@
 /*
  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -43,9 +43,21 @@
 #ifndef LCLIENT_H
 #define LCLIENT_H
 
-int cl_glimpse_size(struct inode *inode);
+blkcnt_t dirty_cnt(struct inode *inode);
+
+int cl_glimpse_size0(struct inode *inode, int agl);
 int cl_glimpse_lock(const struct lu_env *env, struct cl_io *io,
-                    struct inode *inode, struct cl_object *clob);
+                    struct inode *inode, struct cl_object *clob, int agl);
+
+static inline int cl_glimpse_size(struct inode *inode)
+{
+        return cl_glimpse_size0(inode, 0);
+}
+
+static inline int cl_agl(struct inode *inode)
+{
+        return cl_glimpse_size0(inode, 1);
+}
 
 /**
  * Locking policy for setattr.
@@ -95,6 +107,10 @@ struct ccc_io {
          * True iff io is processing glimpse right now.
          */
         int                  cui_glimpse;
+	/**
+	 * Layout version when this IO is initialized
+	 */
+	__u32                cui_layout_gen;
         /**
          * File descriptor against which IO is done.
          */
@@ -135,6 +151,13 @@ static inline struct cl_attr *ccc_env_thread_attr(const struct lu_env *env)
         return attr;
 }
 
+static inline struct cl_io *ccc_env_thread_io(const struct lu_env *env)
+{
+        struct cl_io *io = &ccc_env_info(env)->cti_io;
+        memset(io, 0, sizeof(*io));
+        return io;
+}
+
 struct ccc_session {
         struct ccc_io cs_ios;
 };
@@ -181,6 +204,18 @@ struct ccc_object {
          * \see ll_vm_open(), ll_vm_close().
          */
         cfs_atomic_t            cob_mmap_cnt;
+
+	/**
+	 * various flags
+	 * cob_discard_page_warned
+	 *     if pages belonging to this object are discarded when a client
+	 * is evicted, some debug info will be printed, this flag will be set
+	 * during processing the first discarded page, then avoid flooding
+	 * debug message for lots of discarded pages.
+	 *
+	 * \see ll_dirty_page_discard_warn.
+	 */
+	int			cob_discard_page_warned:1;
 };
 
 /**
@@ -322,8 +357,7 @@ void ccc_io_advance(const struct lu_env *env, const struct cl_io_slice *ios,
 void ccc_io_update_iov(const struct lu_env *env, struct ccc_io *cio,
                        struct cl_io *io);
 int ccc_prep_size(const struct lu_env *env, struct cl_object *obj,
-                  struct cl_io *io, loff_t start, size_t count, int vfslock,
-                  int *exceed);
+                  struct cl_io *io, loff_t start, size_t count, int *exceed);
 void ccc_req_completion(const struct lu_env *env,
                         const struct cl_req_slice *slice, int ioret);
 void ccc_req_attr_set(const struct lu_env *env,const struct cl_req_slice *slice,
@@ -349,13 +383,12 @@ int cl_setattr_ost(struct inode *inode, const struct iattr *attr,
 
 struct cl_page *ccc_vmpage_page_transient(cfs_page_t *vmpage);
 int ccc_object_invariant(const struct cl_object *obj);
-int cl_inode_init(struct inode *inode, struct lustre_md *md);
+int cl_file_inode_init(struct inode *inode, struct lustre_md *md);
 void cl_inode_fini(struct inode *inode);
 int cl_local_size(struct inode *inode);
 
 __u16 ll_dirent_type_get(struct lu_dirent *ent);
-__u64 cl_fid_build_ino(const struct lu_fid *fid);
-__u32 cl_fid_build_ino32(const struct lu_fid *fid);
+__u64 cl_fid_build_ino(const struct lu_fid *fid, int api32);
 __u32 cl_fid_build_gen(const struct lu_fid *fid);
 
 #ifdef INVARIANT_CHECK
@@ -378,6 +411,7 @@ int cl_ocd_update(struct obd_device *host,
 
 struct ccc_grouplock {
         struct lu_env   *cg_env;
+        struct cl_io    *cg_io;
         struct cl_lock  *cg_lock;
         unsigned long    cg_gid;
 };
@@ -386,4 +420,31 @@ int  cl_get_grouplock(struct cl_object *obj, unsigned long gid, int nonblock,
                       struct ccc_grouplock *cg);
 void cl_put_grouplock(struct ccc_grouplock *cg);
 
+/**
+ * New interfaces to get and put lov_stripe_md from lov layer. This violates
+ * layering because lov_stripe_md is supposed to be a private data in lov.
+ *
+ * NB: If you find you have to use these interfaces for your new code, please
+ * think about it again. These interfaces may be removed in the future for
+ * better layering. */
+struct lov_stripe_md *lov_lsm_get(struct cl_object *clobj);
+void lov_lsm_put(struct cl_object *clobj, struct lov_stripe_md *lsm);
+int lov_read_and_clear_async_rc(struct cl_object *clob);
+
+struct lov_stripe_md *ccc_inode_lsm_get(struct inode *inode);
+void ccc_inode_lsm_put(struct inode *inode, struct lov_stripe_md *lsm);
+
+/**
+ * Data structure managing a client's cached clean pages. An LRU of
+ * pages is maintained, along with other statistics.
+ */
+struct cl_client_cache {
+	cfs_atomic_t	ccc_users;    /* # of users (OSCs) of this data */
+	cfs_list_t	ccc_lru;      /* LRU list of cached clean pages */
+	spinlock_t	ccc_lru_lock; /* lock for list */
+	cfs_atomic_t	ccc_lru_left; /* # of LRU entries available */
+	unsigned long	ccc_lru_max;  /* Max # of LRU entries possible */
+	unsigned int	ccc_lru_shrinkers; /* # of threads reclaiming */
+};
+
 #endif /*LCLIENT_H */