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-rw-r--r--drivers/gpu/drm/i915/i915_gem.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index d5aad0bc71f7..f0e4c5609adb 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1973,7 +1973,19 @@ err_pages:
page_cache_release(sg_page_iter_page(&sg_iter));
sg_free_table(st);
kfree(st);
- return PTR_ERR(page);
+
+ /* shmemfs first checks if there is enough memory to allocate the page
+ * and reports ENOSPC should there be insufficient, along with the usual
+ * ENOMEM for a genuine allocation failure.
+ *
+ * We use ENOSPC in our driver to mean that we have run out of aperture
+ * space and so want to translate the error from shmemfs back to our
+ * usual understanding of ENOMEM.
+ */
+ if (PTR_ERR(page) == -ENOSPC)
+ return -ENOMEM;
+ else
+ return PTR_ERR(page);
}
/* Ensure that the associated pages are gathered from the backing storage