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Increase the minimum chunk size by a power of two (32kB --> 64kB, assuming

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4kB pages), in order to avoid dangerous rounding error when calculating
fullness limits during run promotion/demotion.

Convert a structure bitfield to a normal field in areana_run_t.  This should
have been changed along with the other fields in revision 1.120.
This commit is contained in:
jasone 2006-05-10 00:07:45 +00:00
parent c0a3325a9b
commit 2ed3ff7341
1 changed files with 2 additions and 2 deletions
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4
lib/libc/stdlib/malloc.c
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@ -521,7 +521,7 @@ struct arena_run_s {
unsigned regs_minelm;
/* Number of free regions in run. */
unsigned nfree:(RUN_MIN_REGS_2POW + 2);
unsigned nfree;
/*
* Current quartile for this run, one of: {RUN_QINIT, RUN_Q0, RUN_25,
@ -3100,7 +3100,7 @@ malloc_init_hard(void)
* enough resolution if there are too few
* regions for the largest bin size classes.
*/
if (opt_chunk_2pow > pagesize_2pow + 3)
if (opt_chunk_2pow > pagesize_2pow + 4)
opt_chunk_2pow--;
break;
case 'K':