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authorZack Kirsch <zack.kirsch@isilon.com>2009-02-09 21:51:29 -0800
committerJeremy Allison <jra@samba.org>2009-02-13 10:08:40 -0800
commit813273c87e4f48d7d8415c8ee9a1a553ed369429 (patch)
tree2f6140e3f75d987f437ff93a291a4e8e14117d1b /source3/utils/debug2html.c
parenteb3d964f20f44deaf2b4f07adba64785875710e0 (diff)
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Add VFS ops for Windows BRL: Lock, Unlock and Cancel:
This patch adds 3 new VFS OPs for Windows byte range locking: BRL_LOCK_WINDOWS, BRL_UNLOCK_WINDOWS and BRL_CANCEL_WINDOWS. Specifically: * I renamed brl_lock_windows, brl_unlock_windows and brl_lock_cancel to *_default as the default implementations of the VFS ops. * The blocking_lock_record (BLR) is now passed into the brl_lock_windows and brl_cancel_windows paths. The Onefs implementation uses it - future implementations may find it useful too. * Created brl_lock_cancel to do what brl_lock/brl_unlock do: set up a lock_struct and call either the Posix or Windows lock function. These happen to be the same for the default implementation. * Added helper functions: increment_current_lock_count() and decrement_current_lock_count(). * Minor spelling correction in brl_timeout_fn: brl -> blr. * Changed blocking_lock_cancel() to return the BLR that it has cancelled. This allows us to assert its the lock that we wanted to cancel. If this assert ever fires, this path will need to take in the BLR to cancel, rather than choosing on its own. * Adds a small helper function: find_blocking_lock_record_by_id(). Used by the OneFS implementation, but could be useful for others.
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