LU-4588 code: replace semaphores with mutexes

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

diff --git a/lustre/osd-ldiskfs/osd_iam.c b/lustre/osd-ldiskfs/osd_iam.c
index 1524e61..009ec9a 100644 (file)
--- a/lustre/osd-ldiskfs/osd_iam.c
+++ b/lustre/osd-ldiskfs/osd_iam.c
@@ -173,7 +173,7 @@ iam_load_idle_blocks(struct iam_container *c, iam_ptr_t blk)
        struct buffer_head *bh;
        int err;
 
-       LASSERT(down_trylock(&c->ic_idle_sem) != 0);
+       LASSERT(mutex_is_locked(&c->ic_idle_mutex));
 
        if (blk == 0)
                return NULL;
@@ -237,13 +237,13 @@ static int iam_format_guess(struct iam_container *c)
                idle_blocks = (__u32 *)(c->ic_root_bh->b_data +
                                        c->ic_descr->id_root_gap +
                                        sizeof(struct dx_countlimit));
-               down(&c->ic_idle_sem);
+               mutex_lock(&c->ic_idle_mutex);
                bh = iam_load_idle_blocks(c, le32_to_cpu(*idle_blocks));
                if (bh != NULL && IS_ERR(bh))
                        result = PTR_ERR(bh);
                else
                        c->ic_idle_bh = bh;
-               up(&c->ic_idle_sem);
+               mutex_unlock(&c->ic_idle_mutex);
        }
 
        return result;
@@ -260,7 +260,7 @@ int iam_container_init(struct iam_container *c,
        c->ic_object = inode;
        init_rwsem(&c->ic_sem);
        dynlock_init(&c->ic_tree_lock);
-       sema_init(&c->ic_idle_sem, 1);
+       mutex_init(&c->ic_idle_mutex);
        return 0;
 }
 EXPORT_SYMBOL(iam_container_init);
@@ -1665,9 +1665,9 @@ iam_new_node(handle_t *h, struct iam_container *c, iam_ptr_t *b, int *e)
        if (c->ic_idle_bh == NULL)
                goto newblock;
 
-       down(&c->ic_idle_sem);
+       mutex_lock(&c->ic_idle_mutex);
        if (unlikely(c->ic_idle_bh == NULL)) {
-               up(&c->ic_idle_sem);
+               mutex_unlock(&c->ic_idle_mutex);
                goto newblock;
        }
 
@@ -1685,7 +1685,7 @@ iam_new_node(handle_t *h, struct iam_container *c, iam_ptr_t *b, int *e)
                if (*e != 0)
                        goto fail;
 
-               up(&c->ic_idle_sem);
+               mutex_unlock(&c->ic_idle_mutex);
                bh = ldiskfs_bread(NULL, inode, *b, 0, e);
                if (bh == NULL)
                        return NULL;
@@ -1723,7 +1723,7 @@ iam_new_node(handle_t *h, struct iam_container *c, iam_ptr_t *b, int *e)
        }
 
        c->ic_idle_bh = idle;
-       up(&c->ic_idle_sem);
+       mutex_unlock(&c->ic_idle_mutex);
 
 got:
        /* get write access for the found buffer head */
@@ -1744,7 +1744,7 @@ newblock:
        return bh;
 
 fail:
-       up(&c->ic_idle_sem);
+       mutex_unlock(&c->ic_idle_mutex);
        ldiskfs_std_error(inode->i_sb, *e);
        return NULL;
 }
@@ -2382,7 +2382,7 @@ static void iam_recycle_leaf(handle_t *h, struct iam_path *p,
        int count;
        int rc;
 
-       down(&c->ic_idle_sem);
+       mutex_lock(&c->ic_idle_mutex);
        if (unlikely(c->ic_idle_failed)) {
                rc = -EFAULT;
                goto unlock;
@@ -2415,7 +2415,7 @@ static void iam_recycle_leaf(handle_t *h, struct iam_path *p,
        rc = iam_txn_dirty(h, p, c->ic_idle_bh);
 
 unlock:
-       up(&c->ic_idle_sem);
+       mutex_unlock(&c->ic_idle_mutex);
        if (rc != 0)
                CWARN("%.16s: idle blocks failed, will lose the blk %u\n",
                      LDISKFS_SB(inode->i_sb)->s_es->s_volume_name, blk);