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* [PATCH] block: use bd{grab,put}() instead of open-coding
@ 2015-11-20 21:18 Ilya Dryomov
  2016-01-12 15:18 ` Ilya Dryomov
  0 siblings, 1 reply; 3+ messages in thread
From: Ilya Dryomov @ 2015-11-20 21:18 UTC (permalink / raw)
  To: Alexander Viro; +Cc: linux-fsdevel

- bd_acquire() and bd_forget() open-code bdgrab() and bdput()
- raw driver uses igrab() but never checks its return value and always
  holds another ref from bind_set() while calling it, so it's
  equivalent to bdgrab()

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
---
 drivers/char/raw.c | 2 +-
 fs/block_dev.c     | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 60316fbaf295..9b9809b709a5 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -71,7 +71,7 @@ static int raw_open(struct inode *inode, struct file *filp)
 	err = -ENODEV;
 	if (!bdev)
 		goto out;
-	igrab(bdev->bd_inode);
+	bdgrab(bdev);
 	err = blkdev_get(bdev, filp->f_mode | FMODE_EXCL, raw_open);
 	if (err)
 		goto out;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 6f8dd407c533..42ebf7b675c0 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -682,7 +682,7 @@ static struct block_device *bd_acquire(struct inode *inode)
 	spin_lock(&bdev_lock);
 	bdev = inode->i_bdev;
 	if (bdev) {
-		ihold(bdev->bd_inode);
+		bdgrab(bdev);
 		spin_unlock(&bdev_lock);
 		return bdev;
 	}
@@ -698,7 +698,7 @@ static struct block_device *bd_acquire(struct inode *inode)
 			 * So, we can access it via ->i_mapping always
 			 * without igrab().
 			 */
-			ihold(bdev->bd_inode);
+			bdgrab(bdev);
 			inode->i_bdev = bdev;
 			inode->i_mapping = bdev->bd_inode->i_mapping;
 			list_add(&inode->i_devices, &bdev->bd_inodes);
@@ -721,7 +721,7 @@ void bd_forget(struct inode *inode)
 	spin_unlock(&bdev_lock);
 
 	if (bdev)
-		iput(bdev->bd_inode);
+		bdput(bdev);
 }
 
 /**
-- 
2.4.3


^ permalink raw reply related	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2016-01-13 17:25 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2015-11-20 21:18 [PATCH] block: use bd{grab,put}() instead of open-coding Ilya Dryomov
2016-01-12 15:18 ` Ilya Dryomov
2016-01-13 17:25   ` Jens Axboe

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