weiping zhang f680474345 blk-sysfs: remove NULL pointer checking in queue_wb_lat_store
wbt_init doesn't set q->rq_wb to NULL, if wbt_init return 0,
so check return value is enough, remove NULL checking.

Signed-off-by: weiping zhang <zhangweiping@didichuxing.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-11-23 22:00:17 -07:00
2017-11-18 11:22:04 -08:00
2017-11-18 11:22:04 -08:00
2017-11-18 11:22:04 -08:00
2017-11-15 20:30:12 -08:00
2017-11-17 17:51:33 -08:00
2017-11-15 13:46:33 -08:00
2017-11-14 18:01:46 -08:00
2017-11-18 10:26:57 -08:00
2017-11-17 17:51:33 -08:00
2017-11-17 17:45:29 -08:00
2017-11-18 10:26:57 -08:00
2017-11-17 17:45:29 -08:00

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
Description
Linux kernel source tree
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