Small cleanup: don't do anything if on resync_size command size of the device remaine...

git-svn-id: https://scst.svn.sourceforge.net/svnroot/scst/trunk@1091 d57e44dd-8a1f-0410-8b47-8ef2f437770f

diff --git a/scst/src/dev_handlers/scst_vdisk.c b/scst/src/dev_handlers/scst_vdisk.c
index 2ad342a..fb2a257 100644 (file)
--- a/scst/src/dev_handlers/scst_vdisk.c
+++ b/scst/src/dev_handlers/scst_vdisk.c
@@ -426,7 +426,7 @@ static struct file *vdisk_open(const struct scst_vdisk_dev *virt_dev)
  *
  *  Description:
  *************************************************************/
-static int vdisk_get_check_file_size(const char *file_name, bool blockio,
+static int vdisk_get_file_size(const char *file_name, bool blockio,
        loff_t *file_size)
 {
        struct inode *inode;
@@ -543,7 +543,7 @@ static int vdisk_attach(struct scst_device *dev)
                if (virt_dev->nullio)
                        err = VDISK_NULLIO_SIZE;
                else {
-                       res = vdisk_get_check_file_size(virt_dev->file_name,
+                       res = vdisk_get_file_size(virt_dev->file_name,
                                virt_dev->blockio, &err);
                        if (res != 0)
                                goto out;
@@ -2839,22 +2839,28 @@ static void vdisk_report_registering(const char *type,
 /* scst_vdisk_mutex supposed to be held */
 static int vdisk_resync_size(struct scst_vdisk_dev *virt_dev)
 {
-       loff_t err;
+       loff_t file_size;
        int res = 0;
 
        if (!virt_dev->nullio) {
-               res = vdisk_get_check_file_size(virt_dev->file_name,
-                               virt_dev->blockio, &err);
+               res = vdisk_get_file_size(virt_dev->file_name,
+                               virt_dev->blockio, &file_size);
                if (res != 0)
                        goto out;
        } else
-               err = VDISK_NULLIO_SIZE;
+               file_size = VDISK_NULLIO_SIZE;
+
+       if (file_size == virt_dev->file_size) {
+               PRINT_INFO("Size of virtual disk %s remained the same",
+                       virt_dev->name);
+               goto out;
+       }
 
        res = scst_suspend_activity(true);
        if (res != 0)
                goto out;
 
-       virt_dev->file_size = err;
+       virt_dev->file_size = file_size;
        virt_dev->nblocks = virt_dev->file_size >> virt_dev->block_shift;
 
        scst_dev_del_all_thr_data(virt_dev->dev);
@@ -3340,7 +3346,7 @@ static int vcdrom_change(char *p, char *name)
                strncpy(fn, file_name, len);
                virt_dev->file_name = fn;
 
-               res = vdisk_get_check_file_size(virt_dev->file_name,
+               res = vdisk_get_file_size(virt_dev->file_name,
                                virt_dev->blockio, &err);
                if (res != 0)
                        goto out_free;