* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2012, Whamcloud, Inc.
+ * Copyright (c) 2011, 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define __LUSTRE_LU_OBJECT_H
#include <stdarg.h>
-
-/*
- * struct lu_fid
- */
#include <libcfs/libcfs.h>
-
#include <lustre/lustre_idl.h>
-
#include <lu_ref.h>
struct seq_file;
void (*ldto_stop)(struct lu_device_type *t);
};
+static inline int lu_device_is_md(const struct lu_device *d)
+{
+ return ergo(d != NULL, d->ld_type->ldt_tags & LU_DEVICE_MD);
+}
+
/**
* Flags for the object layers.
*/
* Depth. Top level layer depth is 0.
*/
int lo_depth;
- /**
- * Flags from enum lu_object_flags.
- */
- unsigned long lo_flags;
+ /**
+ * Flags from enum lu_object_flags.
+ */
+ __u32 lo_flags;
/**
* Link to the device, for debugging.
*/
};
enum lu_object_header_flags {
- /**
- * Don't keep this object in cache. Object will be destroyed as soon
- * as last reference to it is released. This flag cannot be cleared
- * once set.
- */
- LU_OBJECT_HEARD_BANSHEE = 0
+ /**
+ * Don't keep this object in cache. Object will be destroyed as soon
+ * as last reference to it is released. This flag cannot be cleared
+ * once set.
+ */
+ LU_OBJECT_HEARD_BANSHEE = 0,
+ /**
+ * Mark this object has already been taken out of cache.
+ */
+ LU_OBJECT_UNHASHED = 1
};
enum lu_object_header_attr {
* lu_site stats
*/
struct lprocfs_stats *ls_stats;
- struct lprocfs_stats *ls_time_stats;
/**
* XXX: a hack! fld has to find md_site via site, remove when possible
*/
- struct md_site *ld_md_site;
+ struct seq_server_site *ld_seq_site;
};
static inline struct lu_site_bkt_data *
void lu_object_put(const struct lu_env *env, struct lu_object *o);
void lu_object_put_nocache(const struct lu_env *env, struct lu_object *o);
+void lu_object_unhash(const struct lu_env *env, struct lu_object *o);
int lu_site_purge(const struct lu_env *env, struct lu_site *s, int nr);
/**
- * \retval 1 iff object \a o exists on stable storage,
- * \retval 0 iff object \a o not exists on stable storage.
- * \retval -1 iff object \a o is on remote server.
+ * Check whether object exists, no matter on local or remote storage.
+ * Note: LOHA_EXISTS will be set once some one created the object,
+ * and it does not needs to be committed to storage.
*/
-static inline int lu_object_exists(const struct lu_object *o)
-{
- __u32 attr;
-
- attr = o->lo_header->loh_attr;
- if (attr & LOHA_REMOTE)
- return -1;
- else if (attr & LOHA_EXISTS)
- return +1;
- else
- return 0;
-}
+#define lu_object_exists(o) ((o)->lo_header->loh_attr & LOHA_EXISTS)
+
+/**
+ * Check whether object on the remote storage.
+ */
+#define lu_object_remote(o) unlikely((o)->lo_header->loh_attr & LOHA_REMOTE)
static inline int lu_object_assert_exists(const struct lu_object *o)
{
- return lu_object_exists(o) != 0;
+ return lu_object_exists(o);
}
static inline int lu_object_assert_not_exists(const struct lu_object *o)
{
- return lu_object_exists(o) <= 0;
+ return !lu_object_exists(o);
}
/**
*/
static inline __u32 lu_object_attr(const struct lu_object *o)
{
- LASSERT(lu_object_exists(o) > 0);
+ LASSERT(lu_object_exists(o) != 0);
return o->lo_header->loh_attr;
}
/** @} lu_context */
-struct lu_ucred {
- __u32 uc_valid;
- __u32 uc_o_uid;
- __u32 uc_o_gid;
- __u32 uc_o_fsuid;
- __u32 uc_o_fsgid;
- __u32 uc_uid;
- __u32 uc_gid;
- __u32 uc_fsuid;
- __u32 uc_fsgid;
- __u32 uc_suppgids[2];
- cfs_cap_t uc_cap;
- __u32 uc_umask;
- cfs_group_info_t *uc_ginfo;
- struct md_identity *uc_identity;
-};
-struct lu_ucred *lu_ucred(const struct lu_env *env);
-struct lu_ucred *lu_ucred_check(const struct lu_env *env);
-struct lu_ucred *lu_ucred_assert(const struct lu_env *env);
-
/**
* Output site statistical counters into a buffer. Suitable for
* ll_rd_*()-style functions.
ssize_t lb_len;
};
-/** null buffer */
-extern struct lu_buf LU_BUF_NULL;
-
#define DLUBUF "(%p %zu)"
#define PLUBUF(buf) (buf)->lb_buf, (buf)->lb_len
/**
*/
void lu_global_fini(void);
-enum {
- LU_TIME_FIND_LOOKUP,
- LU_TIME_FIND_ALLOC,
- LU_TIME_FIND_INSERT,
- LU_TIME_NR
-};
-
-extern const char *lu_time_names[LU_TIME_NR];
-
struct lu_kmem_descr {
cfs_mem_cache_t **ckd_cache;
const char *ckd_name;
struct lu_device *dev,
const struct lu_object_conf *conf);
+/** null buffer */
+extern struct lu_buf LU_BUF_NULL;
+
+void lu_buf_free(struct lu_buf *buf);
+void lu_buf_alloc(struct lu_buf *buf, int size);
+void lu_buf_realloc(struct lu_buf *buf, int size);
+
+int lu_buf_check_and_grow(struct lu_buf *buf, int len);
+struct lu_buf *lu_buf_check_and_alloc(struct lu_buf *buf, int len);
+
/** @} lu */
#endif /* __LUSTRE_LU_OBJECT_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff