From: Oleg Nesterov Date: Mon, 6 Aug 2012 12:13:23 +0000 (+0200) Subject: uprobes: Kill dup_mmap()->uprobe_mmap(), simplify uprobe_mmap/munmap X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~97^2~20 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f1a45d023193f7d8e55e384090b645d609325393;p=pandora-kernel.git uprobes: Kill dup_mmap()->uprobe_mmap(), simplify uprobe_mmap/munmap 1. Kill dup_mmap()->uprobe_mmap(), it was only needed to calculate new_mm->uprobes_state.count removed by the previous patch. If the forking process has a pending uprobe (int3) in vma, it will be copied by copy_page_range(), note that it checks vma->anon_vma so "Don't copy ptes" is not possible after install_breakpoint() which does anon_vma_prepare(). 2. Remove is_swbp_at_addr() and "int count" in uprobe_mmap(). Again, this was needed for uprobes_state.count. As a side effect this fixes the bug pointed out by Srikar, this code lacked the necessary put_uprobe(). 3. uprobe_munmap() becomes a nop after the previous patch. Remove the meaningless code but do not remove the helper, we will need it. Signed-off-by: Oleg Nesterov Acked-by: Srikar Dronamraju --- Reading git-diff-tree failed