Updates to the VFS SHM locking documentation.

FossilOrigin-Name: 9927ce421090ac20285cf05768b38e1f91826a68

doc/vfs-shm.txt

@@ -115,9 +115,6 @@ The following are the allowed lock transitions:
 (11n)  CHECKPOINT         UNLOCK          UNLOCK
 (11o)  RECOVER            READ            READ
 
-These 17 transitions are all that needs to be supported.  The lock
-manager implementation can assert that fact.  The other 25 possible
+These 15 transitions are all that needs to be supported.  The lock
+manager implementation can assert that fact.  The other 27 possible
 transitions among the 7 locking states will never occur.
-
-The rules above are sufficient for correctness.  For maximum concurrency,
-the following additional considerations apply:

manifest

@@ -1,5 +1,8 @@
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-D 2010-05-06T18:48:28
+-----BEGIN PGP SIGNED MESSAGE-----
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+C Updates\sto\sthe\sVFS\sSHM\slocking\sdocumentation.
+D 2010-05-06T19:04:49
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@@ -24,7 +27,7 @@ F configure.ac 14740970ddb674d92a9f5da89083dff1179014ff
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manifest.uuid

@@ -1 +1 @@
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