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* grub-core/kern/mm.c (grub_real_malloc): Don't update the pointer to

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current memory when allocating large chunks. This significantly
	decreases memory fragmentation.
This commit is contained in:
Vladimir Serbinenko 2013-11-18 16:58:55 +01:00
parent 1bbb796799
commit 39ff43c579
2 changed files with 10 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2013-11-18 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/kern/mm.c (grub_real_malloc): Don't update the pointer to
current memory when allocating large chunks. This significantly
decreases memory fragmentation.
2013-11-18 Colin Watson <cjwatson@ubuntu.com>
* util/grub-mkrescue.c (main): Fix typo.

5
grub-core/kern/mm.c
View file

@ -298,7 +298,10 @@ grub_real_malloc (grub_mm_header_t *first, grub_size_t n, grub_size_t align)
/* Mark find as a start marker for next allocation to fasten it.
This will have side effect of fragmenting memory as small
pieces before this will be un-used. */
*first = q;
/* So do it only for chunks under 64K. */
if (n < (0x10000 >> GRUB_MM_ALIGN_LOG2)
|| *first == p)
*first = q;
return p + 1;
}