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cc1ffe61c0
Since the purpose of call flush_workqueue in new_dev_store is to ensure md_delayed_delete() has completed, so we should check rdev->del_work is pending or not. To suppress lockdep warning, we have to check mddev->del_work while md_delayed_delete is attached to rdev->del_work, so it is not aligned to the purpose of flush workquee. So a new workqueue is needed to avoid the awkward situation, and introduce a new func flush_rdev_wq to flush the new workqueue after check if there was pending work. Also like new_dev_store, ADD_NEW_DISK ioctl has the same purpose to flush workqueue while it holds bdev->bd_mutex, so make the same change applies to the ioctl to avoid similar lock issue. And md_delayed_delete actually wants to delete rdev, so rename the function to rdev_delayed_delete. Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.com> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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 Restructured Text 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.