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-rw-r--r--mm/filemap.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 1e5e006b8557..d0cf700bf201 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2504,10 +2504,8 @@ static struct file *do_async_mmap_readahead(struct vm_fault *vmf,
*
* vma->vm_mm->mmap_sem must be held on entry.
*
- * If our return value has VM_FAULT_RETRY set, it's because
- * lock_page_or_retry() returned 0.
- * The mmap_sem has usually been released in this case.
- * See __lock_page_or_retry() for the exception.
+ * If our return value has VM_FAULT_RETRY set, it's because the mmap_sem
+ * may be dropped before doing I/O or by lock_page_maybe_drop_mmap().
*
* If our return value does not have VM_FAULT_RETRY set, the mmap_sem
* has not been released.