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-rw-r--r--libbb/read.c4
-rw-r--r--modutils/insmod.c13
2 files changed, 10 insertions, 7 deletions
diff --git a/libbb/read.c b/libbb/read.c
index fb903c18a..fa9874d31 100644
--- a/libbb/read.c
+++ b/libbb/read.c
@@ -203,8 +203,8 @@ ssize_t open_read_close(const char *filename, void *buf, size_t size)
return read_close(fd, buf, size);
}
-// Read (potentially big) files in one go. File size is estimated by
-// lseek to end.
+// Read (potentially big) files in one go. File size is estimated
+// by stat.
void *xmalloc_open_read_close(const char *filename, size_t *sizep)
{
char *buf;
diff --git a/modutils/insmod.c b/modutils/insmod.c
index f45a59465..3fbb02b75 100644
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -4235,12 +4235,15 @@ static int insmod_ng_main(int argc ATTRIBUTE_UNUSED, char **argv)
}
#if 0
- /* Any special reason why mmap? It isn't performace critical... */
-
- /* yes, xmalloc'ing can use *alot* of RAM. Don't forget that there are
+ /* Any special reason why mmap? It isn't performance critical. -vda */
+ /* Yes, xmalloc'ing can use *alot* of RAM. Don't forget that there are
* modules out there that are half a megabyte! mmap()ing is way nicer
- * for small mem boxes, i guess.
- */
+ * for small mem boxes, i guess. */
+ /* But after load, these modules will take up that 0.5mb in kernel
+ * anyway. Using malloc here causes only a transient spike to 1mb,
+ * after module is loaded, we go back to normal 0.5mb usage
+ * (in kernel). Also, mmap isn't magic - when we touch mapped data,
+ * we use memory. -vda */
int fd;
struct stat st;
unsigned long len;