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A mirror of the official Linux kernel repository just in case
6859d1f290
Based on its name you would think that rqst_should_sleep() would be read-only, not changing anything. But in fact it will clear SP_TASK_PENDING if that was set. This is surprising, and it blurs the line between "check for work to do" and "dequeue work to do". So change the "test_and_clear" to simple "test" and clear the bit once the thread has decided to wake up and return to the caller. With this, it makes sense to *always* set SP_TASK_PENDING when asked, rather than to set it only if no thread could be woken up. [ cel: Previously TASK_PENDING indicated there is work waiting but no idle threads were found to pick up that work. After this patch, it acts as an XPT_BUSY flag for wake-ups that have no associated xprt. ] Signed-off-by: NeilBrown <neilb@suse.de> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
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| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
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| Kbuild | ||
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| 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.