diff options
Diffstat (limited to 'target/linux/generic/hack-4.19/550-loop-Report-EOPNOTSUPP-properly.patch')
| -rw-r--r-- | target/linux/generic/hack-4.19/550-loop-Report-EOPNOTSUPP-properly.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/target/linux/generic/hack-4.19/550-loop-Report-EOPNOTSUPP-properly.patch b/target/linux/generic/hack-4.19/550-loop-Report-EOPNOTSUPP-properly.patch new file mode 100644 index 0000000000..023de0078d --- /dev/null +++ b/target/linux/generic/hack-4.19/550-loop-Report-EOPNOTSUPP-properly.patch @@ -0,0 +1,41 @@ +From 2e864386e62e702a343be2507062ee08d5dfc810 Mon Sep 17 00:00:00 2001 +From: Evan Green <evgreen@chromium.org> +Date: Thu, 14 Nov 2019 15:50:07 -0800 +Subject: loop: Report EOPNOTSUPP properly + +Properly plumb out EOPNOTSUPP from loop driver operations, which may +get returned when for instance a discard operation is attempted but not +supported by the underlying block device. Before this change, everything +was reported in the log as an I/O error, which is scary and not +helpful in debugging. + +Signed-off-by: Evan Green <evgreen@chromium.org> +Reviewed-by: Gwendal Grignou <gwendal@chromium.org> +Reviewed-by: Bart Van Assche <bvanassche@acm.org> +--- + drivers/block/loop.c | 7 +++++-- + 1 file changed, 5 insertions(+), 2 deletions(-) + +--- a/drivers/block/loop.c ++++ b/drivers/block/loop.c +@@ -460,7 +460,7 @@ static void lo_complete_rq(struct reques + if (!cmd->use_aio || cmd->ret < 0 || cmd->ret == blk_rq_bytes(rq) || + req_op(rq) != REQ_OP_READ) { + if (cmd->ret < 0) +- ret = BLK_STS_IOERR; ++ ret = errno_to_blk_status(cmd->ret); + goto end_io; + } + +@@ -1904,7 +1904,10 @@ static void loop_handle_cmd(struct loop_ + failed: + /* complete non-aio request */ + if (!cmd->use_aio || ret) { +- cmd->ret = ret ? -EIO : 0; ++ if (ret == -EOPNOTSUPP) ++ cmd->ret = ret; ++ else ++ cmd->ret = ret ? -EIO : 0; + blk_mq_complete_request(rq); + } + } |