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PR: 241534 Submitted by: Teemu Ollakka <teemu.ollakka@galeracluster.com> Relnotes: http://releases.galeracluster.com/mysql-wsrep-5.7.28-25.20/release-notes-mysql-wsrep-5.7.28-25.20.txt
23 lines
997 B
C
23 lines
997 B
C
--- storage/myisam/mi_dynrec.c.orig 2019-10-21 05:21:41 UTC
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+++ storage/myisam/mi_dynrec.c
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@@ -72,18 +72,13 @@ my_bool mi_dynmap_file(MI_INFO *info, my_off_t size)
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DBUG_RETURN(1);
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}
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/*
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- I wonder if it is good to use MAP_NORESERVE. From the Linux man page:
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- MAP_NORESERVE
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- Do not reserve swap space for this mapping. When swap space is
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- reserved, one has the guarantee that it is possible to modify the
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- mapping. When swap space is not reserved one might get SIGSEGV
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- upon a write if no physical memory is available.
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+ MAP_NORESERVE is unimplemented in FreeBSD
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*/
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info->s->file_map= (uchar*)
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my_mmap(0, (size_t) size,
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info->s->mode==O_RDONLY ? PROT_READ :
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PROT_READ | PROT_WRITE,
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- MAP_SHARED | MAP_NORESERVE,
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+ MAP_SHARED,
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info->dfile, 0L);
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if (info->s->file_map == (uchar*) MAP_FAILED)
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{
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