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authorLennart Poettering <lennart@poettering.net>2015-07-24 01:55:45 +0200
committerLennart Poettering <lennart@poettering.net>2015-07-24 01:55:45 +0200
commitdade37d403f1b8c1d7bb2efbe2361f2a3e999613 (patch)
tree854ef27f7463a0e56cf03c5acffab76b28a03b40 /factory/etc
parent45c047b227d96e98e7076c15ae774ff6390dc403 (diff)
journal: avoid mapping empty data and field hash tables
When a new journal file is created we write the header first, then sync and only then create the data and field hash tables in them. That means to other processes it might appear that the files have a valid header but not data and field hash tables. Our reader code should be able to deal with this. With this change we'll not map the two hash tables right-away after opening a file for reading anymore (because that will of course fail if the objects are missing), but delay this until the first time we access them. On top of that, when we want to look something up in the hash tables and we notice they aren't initialized yet, we consider them empty. This improves handling of some journal files reported in #487.
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