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Commit 213b24c9 authored by Greg Ungerer's avatar Greg Ungerer Committed by Linus Torvalds
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[PATCH] uclinux: use MAP_PRIVATE when mmaping code regions in flat binary loader 



Use MAP_PRIVATE when calling mmap to get memory for the code region.
The flat loader was using MAP_SHARED, but underlying changes to the
MMUless mmap means this is now wrong.

Signed-off-by: default avatarGreg Ungerer <gerg@uclinux.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 03a002e7

fs/binfmt_flat.c

+1 −1
Original line number Diff line number Diff line
@@ -520,7 +520,7 @@ static int load_flat_file(struct linux_binprm * bprm, 
		DBG_FLT("BINFMT_FLAT: ROM mapping of file (we hope)\n");



		down_write(&current->mm->mmap_sem);

		textpos = do_mmap(bprm->file, 0, text_len, PROT_READ|PROT_EXEC, MAP_SHARED, 0);

		textpos = do_mmap(bprm->file, 0, text_len, PROT_READ|PROT_EXEC, MAP_PRIVATE, 0);

		up_write(&current->mm->mmap_sem);

		if (!textpos  || textpos >= (unsigned long) -4096) {

			if (!textpos)