mirror of
https://git.openafs.org/openafs.git
synced 2025-01-31 05:27:44 +00:00
5076dfc14b
The two stanzas for HAVE_DCACHE_LOCK are now functionally identical; remove the preprocessor conditionals and duplicate code. Minor functional change is incurrred for very old (before 2.6.38) Linux versions that have dcache_lock; we are now obtaining the d_lock as well. This is safe because d_lock is also quite old (pre-git, 2.6.12), and it is a spinlock that's only held for checking d_unhashed. Therefore, it should have negligible performance impact. It cannot cause deadlocks or violate locking order, because spinlocks can't be held across sleeps. Change-Id: I08faf204e6bd82c4401cdf6048d12cd551dd18fc Reviewed-on: https://gerrit.openafs.org/12792 Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Reviewed-by: Andrew Deason <adeason@dson.org> Tested-by: BuildBot <buildbot@rampaginggeek.com>
AFS is a distributed file system that enables users to share and access all of the files stored in a network of computers as easily as they access the files stored on their local machines. The file system is called distributed for this exact reason: files can reside on many different machines, but are available to users on every machine. OpenAFS 1.0 was originally released by IBM under the terms of the IBM Public License 1.0 (IPL10). For details on IPL10 see the LICENSE file in this directory. The current OpenAFS distribution is licensed under a combination of the IPL10 and many other licenses as granted by the relevant copyright holders. The LICENSE file in this directory contains more details, thought it is not a comprehensive statement. See INSTALL for information about building and installing OpenAFS on various platforms. See CODING for developer information and guidelines. See NEWS for recent changes to OpenAFS.