From: majianpeng <majianpeng@gmail.com>
To: axboe <axboe@kernel.dk>, viro <viro@zeniv.linux.org.uk>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: [PATCH V2 1/2] block: Set inode of block_device size to zero when delete gendisk.
Date: Tue, 17 Sep 2013 11:22:01 +0800 [thread overview]
Message-ID: <201309171121587796647@gmail.com> (raw)
When remove gendisk, set the size of inode of block_device to zero.
This is mainly let the vfs know disk removed.
Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
---
block/genhd.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/block/genhd.c b/block/genhd.c
index dadf42b..9a4c245 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1369,6 +1369,12 @@ int invalidate_partition(struct gendisk *disk, int partno)
if (bdev) {
fsync_bdev(bdev);
res = __invalidate_device(bdev, true);
+ /*
+ * When used buffer-mode on raw blockdevice,the disk removed.
+ * But the vfs don't know.So tell the vfs size of disk
+ * became zero, the buffer write can return
+ */
+ i_size_write(bdev->bd_inode, 0);
bdput(bdev);
}
return res;
--
1.8.4-rc0
next reply other threads:[~2013-09-17 3:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-17 3:22 majianpeng [this message]
2013-09-25 15:56 ` [PATCH V2 1/2] block: Set inode of block_device size to zero when delete gendisk Jeff Moyer
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