diff --git a/src/gallium/drivers/iris/iris_bufmgr.c b/src/gallium/drivers/iris/iris_bufmgr.c
index 158ed8ff3fd..088f34f1e28 100644
--- a/src/gallium/drivers/iris/iris_bufmgr.c
+++ b/src/gallium/drivers/iris/iris_bufmgr.c
@@ -179,8 +179,6 @@ struct iris_memregion {
 struct iris_slab {
    struct pb_slab base;
 
-   unsigned entry_size;
-
    /** The BO representing the entire slab */
    struct iris_bo *bo;
 
@@ -795,7 +793,6 @@ iris_slab_alloc(void *priv,
    slab->base.num_free = slab->base.num_entries;
    slab->base.group_index = group_index;
    slab->base.entry_size = entry_size;
-   slab->entry_size = entry_size;
    slab->entries = calloc(slab->base.num_entries, sizeof(*slab->entries));
    if (!slab->entries)
       goto fail_bo;
diff --git a/src/gallium/drivers/zink/zink_bo.c b/src/gallium/drivers/zink/zink_bo.c
index eedfa2c9002..65b37ce3801 100644
--- a/src/gallium/drivers/zink/zink_bo.c
+++ b/src/gallium/drivers/zink/zink_bo.c
@@ -69,7 +69,6 @@ struct zink_sparse_commitment {
 
 struct zink_slab {
    struct pb_slab base;
-   unsigned entry_size;
    struct zink_bo *buffer;
    struct zink_bo *entries;
 };
@@ -174,7 +173,7 @@ bo_slab_free(struct zink_screen *screen, struct pb_slab *pslab)
    struct zink_slab *slab = zink_slab(pslab);
    ASSERTED unsigned slab_size = slab->buffer->base.size;
 
-   assert(slab->base.num_entries * slab->entry_size <= slab_size);
+   assert(slab->base.num_entries * slab->base.entry_size <= slab_size);
    FREE(slab->entries);
    zink_bo_unref(screen, slab->buffer);
    FREE(slab);
@@ -1244,7 +1243,6 @@ bo_slab_alloc(void *priv, unsigned mem_type_idx, unsigned entry_size, unsigned g
    slab->base.num_free = slab->base.num_entries;
    slab->base.group_index = group_index;
    slab->base.entry_size = entry_size;
-   slab->entry_size = entry_size;
    slab->entries = CALLOC(slab->base.num_entries, sizeof(*slab->entries));
    if (!slab->entries)
       goto fail_buffer;
diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
index 7807980f154..e7412c32152 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.c
@@ -746,7 +746,6 @@ struct pb_slab *amdgpu_bo_slab_alloc(void *priv, unsigned heap, unsigned entry_s
    slab->base.num_free = slab->base.num_entries;
    slab->base.group_index = group_index;
    slab->base.entry_size = entry_size;
-   slab->entry_size = entry_size;
    slab->entries = CALLOC(slab->base.num_entries, sizeof(*slab->entries));
    if (!slab->entries)
       goto fail_buffer;
@@ -799,11 +798,11 @@ void amdgpu_bo_slab_free(struct amdgpu_winsys *ws, struct pb_slab *pslab)
    struct amdgpu_slab *slab = amdgpu_slab(pslab);
    unsigned slab_size = slab->buffer->base.size;
 
-   assert(slab->base.num_entries * slab->entry_size <= slab_size);
+   assert(slab->base.num_entries * slab->base.entry_size <= slab_size);
    if (slab->buffer->base.placement & RADEON_DOMAIN_VRAM)
-      ws->slab_wasted_vram -= slab_size - slab->base.num_entries * slab->entry_size;
+      ws->slab_wasted_vram -= slab_size - slab->base.num_entries * slab->base.entry_size;
    else
-      ws->slab_wasted_gtt -= slab_size - slab->base.num_entries * slab->entry_size;
+      ws->slab_wasted_gtt -= slab_size - slab->base.num_entries * slab->base.entry_size;
 
    for (unsigned i = 0; i < slab->base.num_entries; ++i)
       amdgpu_bo_remove_fences(&slab->entries[i].b);
diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.h b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.h
index 5b23b89b9d3..e0959e03da0 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_bo.h
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_bo.h
@@ -126,7 +126,6 @@ struct amdgpu_bo_slab {
 
 struct amdgpu_slab {
    struct pb_slab base;
-   unsigned entry_size;
    struct amdgpu_winsys_bo *buffer;
    struct amdgpu_bo_slab *entries;
 };