[PATCH] fixup! mm: Rename __thp_get_unmapped_area to mm_get_unmapped_area_aligned

[Peter Xu]

Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
---
 mm/huge_memory.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 52f13a70562f..5cbe45405623 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1088,6 +1088,24 @@ static inline bool is_transparent_hugepage(const struct folio *folio)
 		folio_test_large_rmappable(folio);
 }
 
+/**
+ * mm_get_unmapped_area_aligned - Allocate an aligned virtual address
+ * @filp: file target of the mmap() request
+ * @addr: hint address from mmap() request
+ * @len: len of the mmap() request
+ * @off: file offset of the mmap() request
+ * @flags: flags of the mmap() request
+ * @size: the size of alignment the caller requests
+ * @vm_flags: the vm_flags passed from get_unmapped_area() caller
+ *
+ * This function should normally be used by a driver's specific
+ * get_unmapped_area() handler to provide a properly aligned virtual
+ * address for a specific mmap() request.  The caller should pass in most
+ * of the parameters from the get_unmapped_area() request, but properly
+ * specify @size as the alignment needed.
+ *
+ * Return: non-zero if a valid virtual address is found, zero if fails
+ */
 unsigned long mm_get_unmapped_area_aligned(struct file *filp,
 		unsigned long addr, unsigned long len,
 		loff_t off, unsigned long flags, unsigned long size,
@@ -1104,7 +1122,7 @@ unsigned long mm_get_unmapped_area_aligned(struct file *filp,
 		return 0;
 
 	len_pad = len + size;
-	if (len_pad < len || (off + len_pad) < off)
+	if (len_pad < len || (off + len_pad) < off || off_align < off)
 		return 0;
 
 	ret = mm_get_unmapped_area_vmflags(current->mm, filp, addr, len_pad,
-- 
2.49.0


-- 
Peter Xu