In one test, when modprobe zram, no zram device was found in the /dev.
But don't see any errors printed in jouranls/dmesg. Later we found out
that the reason was that device_add() did not check its return value when
calling devtmpfs_create_node(). So we hope to turn devtmpfs_*_node() &
devtmpfs_submit_req() into a function with no return value, and add some
debug info in the handle() that actually processes the request to let the
user know why the creation was not successful.
Patch [1] devtmpfs: convert to pr_fmt.
Patch [2] devtmpfs: add debug info to handle().
Patch [3] devtmpfs: Remove return value of devtmpfs_*_node() &
devtmpfs_submit_req().
Longlong Xia (3):
devtmpfs: convert to pr_fmt
devtmpfs: add debug info to handle()
devtmpfs: remove return value of devtmpfs_*_node() &
devtmpfs_submit_req()
drivers/base/base.h | 8 +++----
drivers/base/devtmpfs.c | 48 +++++++++++++++++++++++------------------
2 files changed, 31 insertions(+), 25 deletions(-)
--
2.25.1
