uschindler commented on code in PR #13219:
URL: https://github.com/apache/lucene/pull/13219#discussion_r1539364622
##########
lucene/core/src/java21/org/apache/lucene/store/PosixNativeAccess.java:
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@@ -137,17 +136,11 @@ public void madvise(MemorySegment segment, IOContext
context) throws IOException
}
private Integer mapIOContext(IOContext ctx) {
- // Merging always wins and implies sequential access, because kernel is
advised to free pages
- // after use:
- if (ctx.context() == Context.MERGE) {
- return POSIX_MADV_SEQUENTIAL;
- }
- if (ctx.randomAccess()) {
- return POSIX_MADV_RANDOM;
- }
- if (ctx.readOnce()) {
- return POSIX_MADV_SEQUENTIAL;
- }
- return null;
+ return switch (ctx.readAdvice()) {
Review Comment:
I think we can remove the context from the signature and change it to
`madvise(MemorySegment, ReadAdvice)`. `MemorySegmentIndexInputProvider` would
just pass `context.readAdvice()` to `madvise()` then.
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