xfs: make mem_to_page available outside of xfs_buf.c

Rename the function to kmem_to_page and move it to kmem.h together
with our kmem_large allocator that may either return kmalloced or
vmalloc pages.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

2 files changed, 9 insertions, 12 deletions

diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h
index 8e6b3ba81c03..267655acd426 100644
--- a/fs/xfs/kmem.h
+++ b/fs/xfs/kmem.h
@@ -124,4 +124,12 @@ kmem_zone_zalloc(kmem_zone_t *zone, xfs_km_flags_t flags)
         return kmem_zone_alloc(zone, flags | KM_ZERO);
 }
 
+static inline struct page *
+kmem_to_page(void *addr)
+{
+        if (is_vmalloc_addr(addr))
+                return vmalloc_to_page(addr);
+        return virt_to_page(addr);
+}
+
 #endif /* __XFS_SUPPORT_KMEM_H__ */
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index e860114e8c9b..f455995f9278 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -934,17 +934,6 @@ xfs_buf_set_empty(
         bp->b_maps[0].bm_len = bp->b_length;
 }
 
-static inline struct page *
-mem_to_page(
-        void                    *addr)
-{
-        if ((!is_vmalloc_addr(addr))) {
-                return virt_to_page(addr);
-        } else {
-                return vmalloc_to_page(addr);
-        }
-}
-
 int
 xfs_buf_associate_memory(
         xfs_buf_t               *bp,
@@ -977,7 +966,7 @@ xfs_buf_associate_memory(
         bp->b_offset = offset;
 
         for (i = 0; i < bp->b_page_count; i++) {
-                bp->b_pages[i] = mem_to_page((void *)pageaddr);
+                bp->b_pages[i] = kmem_to_page((void *)pageaddr);
                 pageaddr += PAGE_SIZE;
         }