flex_array: export symbols to modules

Alex said:

  I want to use flex_array to store a sparse array of ATM cell
  re-assembly buffers for my ATM over Ethernet driver.  Using the per-vcc
  user_back structure causes problems when stacked with things like
  br2684.

Add EXPORT_SYMBOL() for all publically accessible flex array functions
and move to obj-y so that modules may use this library.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Reported-by: Alex Bennee <kernel-hacker@bennee.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/flex_array.c b/lib/flex_array.c
index 77a6fea7481e..c0ea40ba2082 100644
--- a/lib/flex_array.c
+++ b/lib/flex_array.c
@@ -23,6 +23,7 @@
 #include <linux/flex_array.h>
 #include <linux/slab.h>
 #include <linux/stddef.h>
+#include <linux/module.h>
 
 struct flex_array_part {
         char elements[FLEX_ARRAY_PART_SIZE];
@@ -103,6 +104,7 @@ struct flex_array *flex_array_alloc(int element_size, unsigned int total,
                                                 FLEX_ARRAY_BASE_BYTES_LEFT);
         return ret;
 }
+EXPORT_SYMBOL(flex_array_alloc);
 
 static int fa_element_to_part_nr(struct flex_array *fa,
                                         unsigned int element_nr)
@@ -126,12 +128,14 @@ void flex_array_free_parts(struct flex_array *fa)
         for (part_nr = 0; part_nr < FLEX_ARRAY_NR_BASE_PTRS; part_nr++)
                 kfree(fa->parts[part_nr]);
 }
+EXPORT_SYMBOL(flex_array_free_parts);
 
 void flex_array_free(struct flex_array *fa)
 {
         flex_array_free_parts(fa);
         kfree(fa);
 }
+EXPORT_SYMBOL(flex_array_free);
 
 static unsigned int index_inside_part(struct flex_array *fa,
                                         unsigned int element_nr)
@@ -196,6 +200,7 @@ int flex_array_put(struct flex_array *fa, unsigned int element_nr, void *src,
         memcpy(dst, src, fa->element_size);
         return 0;
 }
+EXPORT_SYMBOL(flex_array_put);
 
 /**
  * flex_array_clear - clear element in array at @element_nr
@@ -223,6 +228,7 @@ int flex_array_clear(struct flex_array *fa, unsigned int element_nr)
         memset(dst, FLEX_ARRAY_FREE, fa->element_size);
         return 0;
 }
+EXPORT_SYMBOL(flex_array_clear);
 
 /**
  * flex_array_prealloc - guarantee that array space exists
@@ -259,6 +265,7 @@ int flex_array_prealloc(struct flex_array *fa, unsigned int start,
         }
         return 0;
 }
+EXPORT_SYMBOL(flex_array_prealloc);
 
 /**
  * flex_array_get - pull data back out of the array
@@ -288,6 +295,7 @@ void *flex_array_get(struct flex_array *fa, unsigned int element_nr)
         }
         return &part->elements[index_inside_part(fa, element_nr)];
 }
+EXPORT_SYMBOL(flex_array_get);
 
 /**
  * flex_array_get_ptr - pull a ptr back out of the array
@@ -308,6 +316,7 @@ void *flex_array_get_ptr(struct flex_array *fa, unsigned int element_nr)
 
         return *tmp;
 }
+EXPORT_SYMBOL(flex_array_get_ptr);
 
 static int part_is_free(struct flex_array_part *part)
 {
@@ -348,3 +357,4 @@ int flex_array_shrink(struct flex_array *fa)
         }
         return ret;
 }
+EXPORT_SYMBOL(flex_array_shrink);