b=21551 Ensure visible pages are sane.

[fs/lustre-release.git] / lustre / include / cl_object.h

diff --git a/lustre/include/cl_object.h b/lustre/include/cl_object.h
index 7536f80..47db8b2 100644 (file)
--- a/lustre/include/cl_object.h
+++ b/lustre/include/cl_object.h
@@ -1301,6 +1301,11 @@ struct cl_lock_descr {
         __u64             cld_gid;
         /** Lock mode. */
         enum cl_lock_mode cld_mode;
+        /**
+         * flags to enqueue lock. A combination of bit-flags from
+         * enum cl_enq_flags.
+         */
+        __u32             cld_enq_flags;
 };
 
 #define DDESCR "%s(%d):[%lu, %lu]"
@@ -1414,7 +1419,7 @@ enum cl_lock_state {
          * state, it must wait for the lock.
          * See state diagram for details.
          */
-         CLS_INTRANSIT,
+        CLS_INTRANSIT,
         /**
          * Lock granted, not used.
          */
@@ -1565,6 +1570,10 @@ struct cl_lock {
          */
         struct list_head      cll_inclosure;
         /**
+         * Confict lock at queuing time.
+         */
+        struct cl_lock       *cll_conflict;
+        /**
          * A list of references to this lock, for debugging.
          */
         struct lu_ref         cll_reference;
@@ -1666,8 +1675,9 @@ struct cl_lock_operations {
          * usual return values of lock state-machine methods, this can return
          * -ESTALE to indicate that lock cannot be returned to the cache, and
          * has to be re-initialized.
+         * unuse is a one-shot operation, so it must NOT return CLO_WAIT.
          *
-         * \see ccc_lock_unlock(), lov_lock_unlock(), osc_lock_unlock()
+         * \see ccc_lock_unuse(), lov_lock_unuse(), osc_lock_unuse()
          */
         int  (*clo_unuse)(const struct lu_env *env,
                           const struct cl_lock_slice *slice);
@@ -2156,11 +2166,6 @@ struct cl_io_lock_link {
         struct list_head     cill_linkage;
         struct cl_lock_descr cill_descr;
         struct cl_lock      *cill_lock;
-        /**
-         * flags to enqueue lock for this IO. A combination of bit-flags from
-         * enum cl_enq_flags.
-         */
-        __u32                cill_enq_flags;
         /** optional destructor */
         void               (*cill_fini)(const struct lu_env *env,
                                         struct cl_io_lock_link *link);
@@ -2223,6 +2228,7 @@ struct cl_io_rw_common {
         int         crw_nonblock;
 };
 
+
 /**
  * State for io.
  *
@@ -2258,7 +2264,6 @@ struct cl_io {
         union {
                 struct cl_rd_io {
                         struct cl_io_rw_common rd;
-                        int                    rd_is_sendfile;
                 } ci_rd;
                 struct cl_wr_io {
                         struct cl_io_rw_common wr;
@@ -2661,6 +2666,10 @@ struct cl_page *cl_page_find        (const struct lu_env *env,
                                      struct cl_object *obj,
                                      pgoff_t idx, struct page *vmpage,
                                      enum cl_page_type type);
+struct cl_page *cl_page_find_sub    (const struct lu_env *env,
+                                     struct cl_object *obj,
+                                     pgoff_t idx, struct page *vmpage,
+                                     struct cl_page *parent);
 void            cl_page_get         (struct cl_page *page);
 void            cl_page_put         (const struct lu_env *env,
                                      struct cl_page *page);
@@ -2763,7 +2772,6 @@ struct cl_lock *cl_lock_peek(const struct lu_env *env, const struct cl_io *io,
                              const char *scope, const void *source);
 struct cl_lock *cl_lock_request(const struct lu_env *env, struct cl_io *io,
                                 const struct cl_lock_descr *need,
-                                __u32 enqflags,
                                 const char *scope, const void *source);
 struct cl_lock *cl_lock_at_page(const struct lu_env *env, struct cl_object *obj,
                                 struct cl_page *page, struct cl_lock *except,
@@ -2783,8 +2791,6 @@ void  cl_lock_release   (const struct lu_env *env, struct cl_lock *lock,
                          const char *scope, const void *source);
 void  cl_lock_user_add  (const struct lu_env *env, struct cl_lock *lock);
 int   cl_lock_user_del  (const struct lu_env *env, struct cl_lock *lock);
-int   cl_lock_compatible(const struct cl_lock *lock1,
-                         const struct cl_lock *lock2);
 
 enum cl_lock_state cl_lock_intransit(const struct lu_env *env,
                                      struct cl_lock *lock);
@@ -2901,7 +2907,7 @@ void  cl_io_end          (const struct lu_env *env, struct cl_io *io);
 int   cl_io_lock_add     (const struct lu_env *env, struct cl_io *io,
                           struct cl_io_lock_link *link);
 int   cl_io_lock_alloc_add(const struct lu_env *env, struct cl_io *io,
-                           struct cl_lock_descr *descr, int enqflags);
+                           struct cl_lock_descr *descr);
 int   cl_io_read_page    (const struct lu_env *env, struct cl_io *io,
                           struct cl_page *page);
 int   cl_io_prepare_write(const struct lu_env *env, struct cl_io *io,
@@ -2928,8 +2934,6 @@ static inline int cl_io_is_append(const struct cl_io *io)
         return io->ci_type == CIT_WRITE && io->u.ci_wr.wr_append;
 }
 
-int cl_io_is_sendfile(const struct cl_io *io);
-
 struct cl_io *cl_io_top(struct cl_io *io);
 
 void cl_io_print(const struct lu_env *env, void *cookie,