ubifs: Import atomic_long operations from Linux
This commit is a preperation for a subsequent UBIFS commit
which needs atomic_long operations.
Therefor "include/asm-generic/atomic-long.h" is imported
from 1860e37 Linux 3.15
Signed-off-by: Anton Habegger <anton.habegger@gmail.com>
diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c
index 49e6f46..6dd6174 100644
--- a/fs/ubifs/ubifs.c
+++ b/fs/ubifs/ubifs.c
@@ -150,6 +150,12 @@
return 0;
}
+
+/* from shrinker.c */
+
+/* Global clean znode counter (for all mounted UBIFS instances) */
+atomic_long_t ubifs_clean_zn_cnt;
+
#endif
/**
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index c120261..a51b237 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -31,6 +31,8 @@
#include <linux/backing-dev.h>
#include "ubifs-media.h"
#else
+#include <asm/atomic.h>
+#include <asm-generic/atomic-long.h>
#include <ubi_uboot.h>
#include <linux/ctype.h>
@@ -63,16 +65,6 @@
void iput(struct inode *inode);
-/*
- * The atomic operations are used for budgeting etc which is not
- * needed for the read-only U-Boot implementation:
- */
-#define atomic_long_inc(a)
-#define atomic_long_dec(a)
-#define atomic_long_sub(a, b)
-
-typedef unsigned long atomic_long_t;
-
/* linux/include/time.h */
#define NSEC_PER_SEC 1000000000L
#define get_seconds() 0