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authorSteven Whitehouse <swhiteho@redhat.com>2009-01-12 05:43:39 -0500
committerSteven Whitehouse <steve@dolmen.chygwyn.com>2009-03-24 07:21:14 -0400
commitf057f6cdf64175db1151b1f5d110e29904f119a1 (patch)
tree582dbf358e351f64977620c29ebf772d693b1948 /fs/ecryptfs
parent22077f57dec8fcbeb1112b35313961c0902ff038 (diff)
GFS2: Merge lock_dlm module into GFS2
This is the big patch that I've been working on for some time now. There are many reasons for wanting to make this change such as: o Reducing overhead by eliminating duplicated fields between structures o Simplifcation of the code (reduces the code size by a fair bit) o The locking interface is now the DLM interface itself as proposed some time ago. o Fewer lookups of glocks when processing replies from the DLM o Fewer memory allocations/deallocations for each glock o Scope to do further optimisations in the future (but this patch is more than big enough for now!) Please note that (a) this patch relates to the lock_dlm module and not the DLM itself, that is still a separate module; and (b) that we retain the ability to build GFS2 as a standalone single node filesystem with out requiring the DLM. This patch needs a lot of testing, hence my keeping it I restarted my -git tree after the last merge window. That way, this has the maximum exposure before its merged. This is (modulo a few minor bug fixes) the same patch that I've been posting on and off the the last three months and its passed a number of different tests so far. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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