Messages in this thread Patch in this message | | | Date | Wed, 11 Sep 2013 19:00:34 +0800 | From | majianpeng <> | Subject | [PATCH 2/2] block_dev: Add size check before doing async write on block device. |
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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 | |