[PATCH 10/17] jbd2: replace __get_free_pages() with kmalloc()

["Mike Rapoport (Microsoft)" <rppt@kernel.org>]

jbd2_alloc() falls back from kmem_cache_alloc() to __get_free_pages() for
allocations larger than PAGE_SIZE.
But kmalloc() can handle such cases with essentially the same fallback.

Replace use of __get_free_pages() with kmalloc() and simplify
jbd2_free() as both kmem_cache_alloc() and kmalloc() allocations can be
freed with kfree().

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---
 fs/jbd2/journal.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 4f397fcdb13c..1137b471e490 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -2784,7 +2784,7 @@ void *jbd2_alloc(size_t size, gfp_t flags)
 	if (size < PAGE_SIZE)
 		ptr = kmem_cache_alloc(get_slab(size), flags);
 	else
-		ptr = (void *)__get_free_pages(flags, get_order(size));
+		ptr = kmalloc(size, flags);
 
 	/* Check alignment; SLUB has gotten this wrong in the past,
 	 * and this can lead to user data corruption! */
@@ -2795,10 +2795,7 @@ void *jbd2_alloc(size_t size, gfp_t flags)
 
 void jbd2_free(void *ptr, size_t size)
 {
-	if (size < PAGE_SIZE)
-		kmem_cache_free(get_slab(size), ptr);
-	else
-		free_pages((unsigned long)ptr, get_order(size));
+	kfree(ptr);
 };
 
 /*

-- 
2.53.0