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If the LLDD resets or detaches from an fc port, the LLDD will deregister all remoteports seen by the fc port and deregister the localport associated with the fc port. The teardown of the localport structure will be held off due to reference counting until all the remoteports are removed (and they are held off until all controllers/associations to terminated). Currently, if the fc port is reinit/reattached and registered again as a localport it is treated as an independent entity from the prior localport and all prior remoteports and controllers cannot be revived. They are created as new and separate entities. This patch changes the localport registration to look at the known localports that are waiting to be torndown. If they are the same port based on wwn's, the local port is transitioned out of the teardown state. This allows the remote ports and controller connections to be reestablished and resumed as long as the localport can also be reregistered within the timeout windows. The patch adds a new routine nvme_fc_attach_to_unreg_lport() with the functionality and moves the lport get/put routines to avoid forward references. Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Christoph Hellwig <hch@lst.de> |
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| README | ||
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.