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mdbx: backport - More MDB_node doc.

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Change-Id: I2a4d2596af8d2c551d891b567e4d3366b2d6ad8c
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Hallvard Furuseth 2016-12-21 21:40:14 +01:00 committed by Leo Yuriev
parent ef00ee6095
commit 5bed0413f3
1 changed files with 5 additions and 0 deletions
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mdb.c
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@ -619,6 +619,11 @@ typedef struct MDB_page {
* pgno on branch nodes. On 64 bit platforms, #mn_flags is also used * pgno on branch nodes. On 64 bit platforms, #mn_flags is also used
* for pgno. (Branch nodes have no flags). Lo and hi are in host byte * for pgno. (Branch nodes have no flags). Lo and hi are in host byte
* order in case some accesses can be optimized to 32-bit word access. * order in case some accesses can be optimized to 32-bit word access.
*
* Leaf node flags describe node contents. #F_BIGDATA says the node's
* data part is the page number of an overflow page with actual data.
* #F_DUPDATA and #F_SUBDATA can be combined giving duplicate data in
* a sub-page/sub-database, and named databases (just #F_SUBDATA).
*/ */
typedef struct MDB_node { typedef struct MDB_node {
/** part of data size or pgno /** part of data size or pgno