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9d2a6211a7Symlink handling is already marked as unlikely and pushing out some of it into pick_link() reduces register spillage on entry to step_into() with gcc 14.2. The compiler needed additional convincing that handle_mounts() is unlikely to fail. At the same time neither clang nor gcc could be convinced to tail-call into pick_link(). While pick_link() takes an address of stack-based object as an argument (which definitely prevents the optimization), splitting it into separate <dentry, mount> tuple did not help. The issue persists even when compiled without stack protector. As such nothing was done about this for the time being to not grow the diff. Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Link: https://patch.msgid.link/20251120003803.2979978-1-mjguzik@gmail.com Signed-off-by: Christian Brauner <brauner@kernel.org> |
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| kernel | ||
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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 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.