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In order to deal with lookup races, nfsd4_free_lock_stateid() needs to be able to signal to other stateful functions that the lock stateid is no longer valid. Right now, nfsd_lock() will check whether or not an existing stateid is still hashed, but only in the "new lock" path. To ensure the stateid invalidation is also recognised by the "existing lock" path, and also by a second call to nfsd4_free_lock_stateid() itself, we can change the type to NFS4_CLOSED_STID under the stp->st_mutex. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.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.