These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / md / persistent-data / dm-block-manager.c

diff --git a/kernel/drivers/md/persistent-data/dm-block-manager.c b/kernel/drivers/md/persistent-data/dm-block-manager.c
index 087411c..f2393ba 100644 (file)
--- a/kernel/drivers/md/persistent-data/dm-block-manager.c
+++ b/kernel/drivers/md/persistent-data/dm-block-manager.c
@@ -454,7 +454,7 @@ int dm_bm_read_lock(struct dm_block_manager *bm, dm_block_t b,
        int r;
 
        p = dm_bufio_read(bm->bufio, b, (struct dm_buffer **) result);
-       if (unlikely(IS_ERR(p)))
+       if (IS_ERR(p))
                return PTR_ERR(p);
 
        aux = dm_bufio_get_aux_data(to_buffer(*result));
@@ -490,7 +490,7 @@ int dm_bm_write_lock(struct dm_block_manager *bm,
                return -EPERM;
 
        p = dm_bufio_read(bm->bufio, b, (struct dm_buffer **) result);
-       if (unlikely(IS_ERR(p)))
+       if (IS_ERR(p))
                return PTR_ERR(p);
 
        aux = dm_bufio_get_aux_data(to_buffer(*result));
@@ -523,7 +523,7 @@ int dm_bm_read_try_lock(struct dm_block_manager *bm,
        int r;
 
        p = dm_bufio_get(bm->bufio, b, (struct dm_buffer **) result);
-       if (unlikely(IS_ERR(p)))
+       if (IS_ERR(p))
                return PTR_ERR(p);
        if (unlikely(!p))
                return -EWOULDBLOCK;
@@ -559,7 +559,7 @@ int dm_bm_write_lock_zero(struct dm_block_manager *bm,
                return -EPERM;
 
        p = dm_bufio_new(bm->bufio, b, (struct dm_buffer **) result);
-       if (unlikely(IS_ERR(p)))
+       if (IS_ERR(p))
                return PTR_ERR(p);
 
        memset(p, 0, dm_bm_block_size(bm));
@@ -578,7 +578,7 @@ int dm_bm_write_lock_zero(struct dm_block_manager *bm,
 }
 EXPORT_SYMBOL_GPL(dm_bm_write_lock_zero);
 
-int dm_bm_unlock(struct dm_block *b)
+void dm_bm_unlock(struct dm_block *b)
 {
        struct buffer_aux *aux;
        aux = dm_bufio_get_aux_data(to_buffer(b));
@@ -590,8 +590,6 @@ int dm_bm_unlock(struct dm_block *b)
                bl_up_read(&aux->lock);
 
        dm_bufio_release(to_buffer(b));
-
-       return 0;
 }
 EXPORT_SYMBOL_GPL(dm_bm_unlock);
 
@@ -609,6 +607,12 @@ void dm_bm_prefetch(struct dm_block_manager *bm, dm_block_t b)
        dm_bufio_prefetch(bm->bufio, b, 1);
 }
 
+bool dm_bm_is_read_only(struct dm_block_manager *bm)
+{
+       return bm->read_only;
+}
+EXPORT_SYMBOL_GPL(dm_bm_is_read_only);
+
 void dm_bm_set_read_only(struct dm_block_manager *bm)
 {
        bm->read_only = true;