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| author | DJ Delorie <dj@delorie.com> | 2017-05-03 16:25:15 -0400 |
|---|---|---|
| committer | DJ Delorie <dj@delorie.com> | 2017-05-03 16:28:01 -0400 |
| commit | 3b5f801ddb838311b5b05c218caac3bdb00d7c95 (patch) | |
| tree | f118416450a44fd2ab445b16acb639d1a4dacaf9 | |
| parent | e35ac97cc887a89f27c0a4ceb789cf4a7d433556 (diff) | |
| download | glibc-3b5f801ddb838311b5b05c218caac3bdb00d7c95.tar.gz | |
Tweak realloc/MREMAP comment to be more accurate.
MMap'd memory isn't shrunk without MREMAP, but IIRC this is intentional for
performance reasons. Regardless, this patch tweaks the existing comment to
be more accurate wrt the existing code.
[BZ #21411]
* malloc/malloc.c: Tweak realloc/MREMAP comment to be more accurate.
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | malloc/malloc.c | 6 |
2 files changed, 8 insertions, 3 deletions
@@ -1,3 +1,8 @@ +2017-05-03 DJ Delorie <dj@redhat.com> + + [BZ #21411] + * malloc/malloc.c: Tweak realloc/MREMAP comment to be more accurate. + 2017-05-03 Phil Blundell <pb@pbcl.net> * inet/netinet/in.h (struct ip_mreq_source): Correct misplaced diff --git a/malloc/malloc.c b/malloc/malloc.c index 068ffc1684..aa45626093 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -514,9 +514,9 @@ void* __libc_calloc(size_t, size_t); REALLOC_ZERO_BYTES_FREES is set, realloc with a size argument of zero (re)allocates a minimum-sized chunk. - Large chunks that were internally obtained via mmap will always - be reallocated using malloc-copy-free sequences unless - the system supports MREMAP (currently only linux). + Large chunks that were internally obtained via mmap will always be + grown using malloc-copy-free sequences unless the system supports + MREMAP (currently only linux). The old unix realloc convention of allowing the last-free'd chunk to be used as an argument to realloc is not supported. |