[PATCH v2 1/5] qemu-img.c: Move IO_BUF_SIZE to the top of the file

[Nir Soffer]

This macro is used by various commands (compare, convert, rebase) but it
is defined somewhere in the middle of the file. I'm going to use it in
the new checksum command so lets clean up a bit before that.
---
 qemu-img.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/qemu-img.c b/qemu-img.c
index a9b3a8103c..c03d6b4b31 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -49,20 +49,21 @@
 #include "block/block_int.h"
 #include "block/blockjob.h"
 #include "block/qapi.h"
 #include "crypto/init.h"
 #include "trace/control.h"
 #include "qemu/throttle.h"
 #include "block/throttle-groups.h"
 
 #define QEMU_IMG_VERSION "qemu-img version " QEMU_FULL_VERSION \
                           "\n" QEMU_COPYRIGHT "\n"
+#define IO_BUF_SIZE (2 * MiB)
 
 typedef struct img_cmd_t {
     const char *name;
     int (*handler)(int argc, char **argv);
 } img_cmd_t;
 
 enum {
     OPTION_OUTPUT = 256,
     OPTION_BACKING_CHAIN = 257,
     OPTION_OBJECT = 258,
@@ -1281,22 +1282,20 @@ static int compare_buffers(const uint8_t *buf1, const 
uint8_t *buf2,
         if (!!memcmp(buf1 + i, buf2 + i, len) != res) {
             break;
         }
         i += len;
     }
 
     *pnum = i;
     return res;
 }
 
-#define IO_BUF_SIZE (2 * MiB)
-
 /*
  * Check if passed sectors are empty (not allocated or contain only 0 bytes)
  *
  * Intended for use by 'qemu-img compare': Returns 0 in case sectors are
  * filled with 0, 1 if sectors contain non-zero data (this is a comparison
  * failure), and 4 on error (the exit status for read errors), after emitting
  * an error message.
  *
  * @param blk:  BlockBackend for the image
  * @param offset: Starting offset to check
-- 
2.38.1