powerpc/mm/hash: Rename get_ea_context to get_user_context

We will be adding get_kernel_context later. Update function name to indicate
this handle context allocation user space address.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/include/asm/book3s/64/mmu.h

@@ -208,7 +208,7 @@ extern void radix_init_pseries(void);
 static inline void radix_init_pseries(void) { };
 #endif
 
-static inline int get_ea_context(mm_context_t *ctx, unsigned long ea)
+static inline int get_user_context(mm_context_t *ctx, unsigned long ea)
 {
 	int index = ea >> MAX_EA_BITS_PER_CONTEXT;
 
@@ -223,7 +223,7 @@ static inline int get_ea_context(mm_context_t *ctx, unsigned long ea)
 static inline unsigned long get_user_vsid(mm_context_t *ctx,
 					  unsigned long ea, int ssize)
 {
-	unsigned long context = get_ea_context(ctx, ea);
+	unsigned long context = get_user_context(ctx, ea);
 
 	return get_vsid(context, ea, ssize);
 }

arch/powerpc/include/asm/mmu_context.h

@@ -81,7 +81,7 @@ static inline bool need_extra_context(struct mm_struct *mm, unsigned long ea)
 {
 	int context_id;
 
-	context_id = get_ea_context(&mm->context, ea);
+	context_id = get_user_context(&mm->context, ea);
 	if (!context_id)
 		return true;
 	return false;

arch/powerpc/mm/slb.c

@@ -734,7 +734,7 @@ static long slb_allocate_user(struct mm_struct *mm, unsigned long ea)
 	if (ea >= mm->context.slb_addr_limit)
 		return -EFAULT;
 
-	context = get_ea_context(&mm->context, ea);
+	context = get_user_context(&mm->context, ea);
 	if (!context)
 		return -EFAULT;