Attachment 317386 Details for Bug 454872 – wrapper for lower level revalidate_disk routines

[patch] wrapper for lower level revalidate_disk routines

1-wrapper-for-lower-level-revalidate-disk-routines.patch (text/plain), 1.83 KB, created by Jeff Moyer on 2008-09-22 17:36:19 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Jeff Moyer

Created: 2008-09-22 17:36:19 UTC

Size: 1.83 KB

patch

obsolete

>Wrapper for lower-level revalidate_disk routines.
>
>This is a wrapper for the lower-level revalidate_disk call-backs such
>as sd_revalidate_disk(). It allows us to perform pre and post
>operations when calling them.
>
>We will use this wrapper in a later patch to adjust block device sizes
>after an online resize (a _post_ operation).
>
>diff -up linux-2.6.9/fs/block_dev.c.orig linux-2.6.9/fs/block_dev.c
>--- linux-2.6.9/fs/block_dev.c.orig	2008-09-02 17:08:36.387333102 -0400
>+++ linux-2.6.9/fs/block_dev.c	2008-09-22 11:23:34.515735843 -0400
>@@ -511,6 +511,27 @@ struct block_device *open_by_devnum(dev_
> 
> EXPORT_SYMBOL(open_by_devnum);
> 
>+/**
>+ * revalidate_disk - wrapper for lower-level driver's revalidate_disk
>+ *                   call-back
>+ *
>+ * @disk: struct gendisk to be revalidated
>+ *
>+ * This routine is a wrapper for lower-level driver's revalidate_disk
>+ * call-backs.  It is used to do common pre and post operations needed
>+ * for all revalidate_disk operations.
>+ */
>+int revalidate_disk(struct gendisk *disk)
>+{
>+	int ret = 0;
>+
>+	if (disk->fops->revalidate_disk)
>+		ret = disk->fops->revalidate_disk(disk);
>+
>+	return ret;
>+}
>+EXPORT_SYMBOL(revalidate_disk);
>+
> /*
>  * This routine checks whether a removable media has been changed,
>  * and invalidates all buffer-cache-entries in that case. This
>diff -up linux-2.6.9/include/linux/fs.h.orig linux-2.6.9/include/linux/fs.h
>--- linux-2.6.9/include/linux/fs.h.orig	2008-09-02 17:08:41.254332835 -0400
>+++ linux-2.6.9/include/linux/fs.h	2008-09-22 11:23:34.536730084 -0400
>@@ -1373,6 +1373,7 @@ extern int fs_may_remount_ro(struct supe
>  */
> #define bio_data_dir(bio)	((bio)->bi_rw & 1)
> 
>+extern int revalidate_disk(struct gendisk *);
> extern int check_disk_change(struct block_device *);
> extern int invalidate_inodes(struct super_block *);
> extern int __invalidate_device(struct block_device *, int);

Actions: View | Diff

Attachments on bug 454872: 317386 | 317387 | 317388 | 317389 | 317390 | 317391