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WHATSNEW. Add text for Open File Description (OFD) locks.

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Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Fri Jul 22 14:13:52 CEST 2016 on sn-devel-144
This commit is contained in:
Jeremy Allison 2016-07-21 16:24:59 -07:00 committed by Ralph Boehme
parent 95e3d185ba
commit c8f2bb12eb
1 changed files with 11 additions and 0 deletions
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WHATSNEW.txt
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@ -135,6 +135,17 @@ by SMB 1 oplocks. This feature was disabled in previous releases, but
the SMB2 leasing code is now considered mature and stable enough to be the SMB2 leasing code is now considered mature and stable enough to be
enabled by default. enabled by default.
Open File Description (OFD) Locks
---------------------------------
On systems that support them (currently only Linux), the fileserver now
uses Open File Description (OFD) locks instead of POSIX locks to implement
client byte range locks. As these locks are associated with a specific
file descriptor on a file this allows more efficient use when multiple
descriptors having file locks are opened onto the same file. An internal
tunable "smbd:force process locks = true" may be used to turn off OFD
locks if there appear to be problems with them.
REMOVED FEATURES REMOVED FEATURES
================ ================