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mdbx: backport - lmdb.h Caveats: Reserved vs. actual mem/disk usage.

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Change-Id: Ia7c250e14bd5a59c8600f74c5843ad0bb37ebd33
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Hallvard Furuseth 2016-01-12 23:18:06 +01:00 committed by Leo Yuriev
parent 4ad241b864
commit 2477997658
1 changed files with 5 additions and 0 deletions
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lmdb.h
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@ -76,6 +76,11 @@
* access to locks and lock file. Exceptions: On read-only filesystems
* or with the #MDB_NOLOCK flag described under #mdb_env_open().
*
* - An LMDB configuration will often reserve considerable \b unused
* memory address space and maybe file size for future growth.
* This does not use actual memory or disk space, but users may need
* to understand the difference so they won't be scared off.
*
* - By default, in versions before 0.9.10, unused portions of the data
* file might receive garbage data from memory freed by other code.
* (This does not happen when using the #MDB_WRITEMAP flag.) As of