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rtld_malloc: remove outdated comments

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The ovu_magic is not neccessary overlaps with low byte of the ov_next,
for the big endian machines.

There is no range checking in the allocator.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D41150
This commit is contained in:
Konstantin Belousov 2023-07-22 07:13:58 +03:00
parent 4ef1c6f75d
commit a24726a6f3
1 changed files with 0 additions and 4 deletions
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4
libexec/rtld-elf/rtld_malloc.c
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@ -68,10 +68,6 @@ static caddr_t pagepool_start, pagepool_end;
* contains a pointer to the next free block, and the bottom two bits must
* be zero. When in use, the first byte is set to MAGIC, and the second
* byte is the size index. The remaining bytes are for alignment.
* If range checking is enabled then a second word holds the size of the
* requested block, less 1, rounded up to a multiple of sizeof(RMAGIC).
* The order of elements is critical: ov_magic must overlay the low order
* bits of ov_next, and ov_magic can not be a valid ov_next bit pattern.
*/
union overhead {
union overhead *ov_next; /* when free */