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The indication for a UMR WQE in progress is needed only within the NAPI context, and hence no races possible and no need for the use of atomic operations. The only place the flag is read outside of NAPI context is in closure flow, after RQ is disabled flag is no more accessed in NAPI. Use a boolean instead of a bit in ring state, so that its non-atomic set operations do not race with the atomic sets of the other bits. Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.