Messages in this thread Patch in this message | | | From | Christoph Hellwig <> | Subject | [PATCH 09/16] net/9p: switch p9_fd_read to kernel_write | Date | Wed, 30 Aug 2017 17:00:00 +0200 |
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Instead of playing with the addressing limits.
Signed-off-by: Christoph Hellwig <hch@lst.de> --- net/9p/trans_fd.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c index f12815777beb..903a190319b9 100644 --- a/net/9p/trans_fd.c +++ b/net/9p/trans_fd.c @@ -422,8 +422,7 @@ static void p9_read_work(struct work_struct *work) static int p9_fd_write(struct p9_client *client, void *v, int len) { - int ret; - mm_segment_t oldfs; + ssize_t ret; struct p9_trans_fd *ts = NULL; if (client && client->status != Disconnected) @@ -435,12 +434,7 @@ static int p9_fd_write(struct p9_client *client, void *v, int len) if (!(ts->wr->f_flags & O_NONBLOCK)) p9_debug(P9_DEBUG_ERROR, "blocking write ...\n"); - oldfs = get_fs(); - set_fs(get_ds()); - /* The cast to a user pointer is valid due to the set_fs() */ - ret = vfs_write(ts->wr, (__force void __user *)v, len, &ts->wr->f_pos); - set_fs(oldfs); - + ret = kernel_write(ts->wr, v, len, &ts->wr->f_pos); if (ret <= 0 && ret != -ERESTARTSYS && ret != -EAGAIN) client->status = Disconnected; return ret; -- 2.11.0
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