linux-kernel - [PATCH 9/9] block: remove revalidate

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Date:   Tue,  1 Sep 2020 17:57:48 +0200
From:   Christoph Hellwig <hch@....de>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Josef Bacik <josef@...icpanda.com>,
        Dan Williams <dan.j.williams@...el.com>, dm-devel@...hat.com,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        nbd@...er.debian.org, ceph-devel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-raid@...r.kernel.org, linux-nvdimm@...ts.01.org,
        linux-nvme@...ts.infradead.org, linux-scsi@...r.kernel.org,
        linux-fsdevel@...r.kernel.org
Subject: [PATCH 9/9] block: remove revalidate_disk()

Remove the now unused helper.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/md/md.h       |  2 +-
 fs/block_dev.c        | 19 -------------------
 include/linux/genhd.h |  1 -
 3 files changed, 1 insertion(+), 21 deletions(-)

diff --git a/drivers/md/md.h b/drivers/md/md.h
index d9c4e6b7e9398d..f9e2ccdd22c478 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -397,7 +397,7 @@ struct mddev {
 	 * These locks are separate due to conflicting interactions
 	 * with bdev->bd_mutex.
 	 * Lock ordering is:
-	 *  reconfig_mutex -> bd_mutex : e.g. do_md_run -> revalidate_disk
+	 *  reconfig_mutex -> bd_mutex
 	 *  bd_mutex -> open_mutex:  e.g. __blkdev_get -> md_open
 	 */
 	struct mutex			open_mutex;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 85f013315d48b3..0771836d0220bd 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1339,25 +1339,6 @@ void revalidate_disk_size(struct gendisk *disk, bool verbose)
 }
 EXPORT_SYMBOL(revalidate_disk_size);
 
-/**
- * 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);
-	revalidate_disk_size(disk, ret == 0);
-	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 --git a/include/linux/genhd.h b/include/linux/genhd.h
index c340b392452ce6..2cdc41a3fb6a57 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -372,7 +372,6 @@ extern void blk_unregister_region(dev_t devt, unsigned long range);
 int register_blkdev(unsigned int major, const char *name);
 void unregister_blkdev(unsigned int major, const char *name);
 
-int revalidate_disk(struct gendisk *disk);
 void revalidate_disk_size(struct gendisk *disk, bool verbose);
 int check_disk_change(struct block_device *bdev);
 int __invalidate_device(struct block_device *bdev, bool kill_dirty);
-- 
2.28.0