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257e84a537
Current iov handling with recvmsg/sendmsg may be confusing. First make a rule for msg->iov: either it points to an allocated iov that have to be kfree()'d later, or it's NULL and we use fast_iov. That's much better than current 3-state (also can point to fast_iov). And rename it into free_iov for uniformity with read/write. Also, instead of after struct io_async_msghdr copy fixing up of msg.msg_iter.iov has been happening in io_recvmsg()/io_sendmsg(). Move it into io_setup_async_msg(), that's the right place. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> [axboe: add comment on NULL check before kfree()] Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
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| net | ||
| samples | ||
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| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
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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.