LU-14994 kernel: kernel update RHEL7.9 [3.10.0-1160.42.2.el7]

[fs/lustre-release.git] / lustre / osd-ldiskfs / osd_iam.h

diff --git a/lustre/osd-ldiskfs/osd_iam.h b/lustre/osd-ldiskfs/osd_iam.h
index aeccdbc..c0e60a9 100644 (file)
--- a/lustre/osd-ldiskfs/osd_iam.h
+++ b/lustre/osd-ldiskfs/osd_iam.h
@@ -14,12 +14,8 @@
  * in the LICENSE file that accompanied this code).
  *
  * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see [sun.com URL with a
- * copy of GPLv2].
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2012, Intel Corporation.
+ * Copyright (c) 2011, 2015, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -92,7 +88,6 @@ enum {
         DX_FMT_NAME_LEN    = 16,
 };
 
-#ifdef __KERNEL__
 
 /*
  * Debugging.
@@ -485,10 +480,8 @@ struct iam_container {
          */
        struct rw_semaphore     ic_sem;
        struct dynlock       ic_tree_lock;
-       /*
-        * Protect ic_idle_bh
-        */
-       struct semaphore        ic_idle_sem;
+       /* Protect ic_idle_bh */
+       struct mutex         ic_idle_mutex;
        /*
         * BH for idle blocks
         */
@@ -1023,7 +1016,7 @@ int iam_lvar_create(struct inode *obj,
 #define dxtrace(command) 
 #endif
 
-#define BH_DXLock        25
+#define BH_DXLock        (BH_BITMAP_UPTODATE + 1)
 #define DX_DEBUG (0)
 #if DX_DEBUG
 static struct iam_lock_stats {
@@ -1041,7 +1034,7 @@ static inline void iam_lock_bh(struct buffer_head volatile *bh)
 {
         DX_DEVAL(iam_lock_stats.dls_bh_lock++);
 #ifdef CONFIG_SMP
-       while (test_and_set_bit(BH_DXLock, &bh->b_state)) {
+       while (test_and_set_bit_lock(BH_DXLock, &bh->b_state)) {
                DX_DEVAL(iam_lock_stats.dls_bh_busy++);
                while (test_bit(BH_DXLock, &bh->b_state))
                         cpu_relax();
@@ -1052,8 +1045,7 @@ static inline void iam_lock_bh(struct buffer_head volatile *bh)
 static inline void iam_unlock_bh(struct buffer_head *bh)
 {
 #ifdef CONFIG_SMP
-        smp_mb__before_clear_bit();
-        clear_bit(BH_DXLock, &bh->b_state);
+       clear_bit_unlock(BH_DXLock, &bh->b_state);
 #endif
 }
 
@@ -1079,31 +1071,12 @@ struct iam_leaf_operations *iam_leaf_ops(const struct iam_leaf *leaf);
 int iam_node_read(struct iam_container *c, iam_ptr_t ptr,
                   handle_t *h, struct buffer_head **bh);
 
-/*
- * Container format.
- */
-struct iam_format {
-        /*
-         * Method called to recognize container format. Should return true iff
-         * container @c conforms to this format. This method may do IO to read
-         * container pages.
-         *
-         * If container is recognized, this method sets operation vectors
-         * ->id_ops and ->id_leaf_ops in container description (c->ic_descr),
-         * and fills other description fields.
-         */
-        int (*if_guess)(struct iam_container *c);
-        /*
-         * Linkage into global list of container formats.
-         */
-        cfs_list_t if_linkage;
-};
-
-void iam_format_register(struct iam_format *fmt);
 int iam_root_limit(int rootgap, int blocksize, int size);
 
 void iam_lfix_format_init(void);
 void iam_lvar_format_init(void);
+int iam_lfix_guess(struct iam_container *c);
+int iam_lvar_guess(struct iam_container *c);
 void iam_htree_format_init(void);
 
 int iam_lfix_create(struct inode *obj,
@@ -1133,7 +1106,6 @@ static inline int ldiskfs_check_dir_entry(const char * function,
 */
 
 /* __KERNEL__ */
-#endif
 
 /*
  * User level API. Copy exists in lustre/lustre/tests/iam_ut.c