637989b5d7
Currently devlink instance is searched on all doit() operations. But it is optionally stored into user_ptr[0]. This requires rediscovering devlink again doing post_doit(). Few devlink commands related to port shared buffers needs 3 pointers (devlink, devlink_port, and devlink_sb) while executing doit commands. Though devlink pointer can be derived from the devlink_port during post_doit() operation when doit() callback has acquired devlink instance lock, relying on such scheme to access devlik pointer makes code very fragile. Hence, to avoid ambiguity in post_doit() and to avoid searching devlink instance again, simplify code by always storing devlink instance in user_ptr[0] and derive devlink_sb pointer in their respective callback routines. Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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.