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From:   Christoph Hellwig <hch@lst.de>
To:     Andrew Morton <akpm@linux-foundation.org>,
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        Haiyang Zhang <haiyangz@microsoft.com>,
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        Christophe Leroy <christophe.leroy@c-s.fr>,
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Subject: [PATCH 14/28] mm: don't return the number of pages from map_kernel_range{,_noflush}
Date:   Wed,  8 Apr 2020 13:59:12 +0200
Message-Id: <20200408115926.1467567-15-hch@lst.de>
In-Reply-To: <20200408115926.1467567-1-hch@lst.de>
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None of the callers needs the number of pages, and a 0 / -errno return
value is a lot more intuitive.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 mm/vmalloc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index a3d810def567..ca8dc5d42580 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -249,7 +249,7 @@ static int vmap_p4d_range(pgd_t *pgd, unsigned long addr,
  * function.
  *
  * RETURNS:
- * The number of pages mapped on success, -errno on failure.
+ * 0 on success, -errno on failure.
  */
 int map_kernel_range_noflush(unsigned long addr, unsigned long size,
 			     pgprot_t prot, struct page **pages)
@@ -269,7 +269,7 @@ int map_kernel_range_noflush(unsigned long addr, unsigned long size,
 			return err;
 	} while (pgd++, addr = next, addr != end);
 
-	return nr;
+	return 0;
 }
 
 static int map_kernel_range(unsigned long start, unsigned long size,
-- 
2.25.1