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Zhihao Cheng
d5240fa65d
The dax is only supported on pfn type pmem devices since commitf467fee48d("block: move the dax flag to queue_limits"). Trying to mount DAX filesystem fails with this error: mount: : wrong fs type, bad option, bad superblock on /dev/pmem7, missing codepage or helper program, or other error. dmesg(1) may have more information after failed mount system call. dmesg: EXT4-fs (pmem7): DAX unsupported by block device. Fix the problem by adding dax flag setting for the missed case. Fixes:f467fee48d("block: move the dax flag to queue_limits") Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Tested-by: Ira Weiny <ira.weiny@intel.com> Tested-by: Alison Schofield <alison.schofield@intel.com> Link: https://patch.msgid.link/20240809031155.2837271-1-chengzhihao1@huawei.com Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
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.