lkml.org 
[lkml]   [2013]   [Sep]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 2/2] block_dev: Add size check before doing async write on block device.
For async-write on block device,when disk removed,the vfs don't know.
It will continue do async-write.Add this check it will stop async-write
when disk removed.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
---
fs/block_dev.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 1173a4e..e308b52 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1514,6 +1514,10 @@ ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov,
struct file *file = iocb->ki_filp;
struct blk_plug plug;
ssize_t ret;
+ loff_t size = i_size_read(file->f_mapping->host);
+
+ if (pos >= size)
+ return 0;

BUG_ON(iocb->ki_pos != pos);

--
1.8.4-rc0
\
 
 \ /
  Last update: 2013-09-11 13:21    [W:0.120 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site