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0e94ed3368
The hctx_busy_show method in debugfs is currently unprotected. This method iterates over all started requests in a tagset and prints them. However, the tags can be updated concurrently via the sysfs attributes 'nr_requests' or 'scheduler' (elevator switch), leading to potential race conditions. Since sysfs attributes 'nr_requests' and 'scheduler' are already protected using q->elevator_lock, extend this protection to the debugfs 'busy' attribute as well to ensure consistency. Signed-off-by: Nilay Shroff <nilay@linux.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250313115235.3707600-4-nilay@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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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.