Oleg Nesterov 9f92448cee uprobes: Clean up and document write_opcode()->lock_page(old_page) ... The comment above write_opcode()->lock_page(old_page) tells about the race with do_wp_page(). I don't really understand which exactly race it means, but afaics this lock_page() was not enough to close all races with do_wp_page(). Anyway, since: 77fc4af1b5 uprobes: Change register_for_each_vma() to take mm->mmap_sem for writing this code is always called with ->mmap_sem held for writing, so we can forget about do_wp_page(). However, we can't simply remove this lock_page(), and the only (afaics) reason is __replace_page()->try_to_free_swap(). Nothing in write_opcode() needs it, move it into __replace_page() and fix the comment. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar.vnet.ibm.com> Cc: Anton Arapov <anton@redhat.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20120729182220.GA20322@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2012-07-30 11:27:20 +02:00
..
callchain.c	perf: Don't call release_callchain_buffers() if allocation fails	2012-01-21 09:33:41 +01:00
core.c	perf: Introduce perf_pmu_migrate_context()	2012-06-18 12:13:21 +02:00
hw_breakpoint.c	Merge branch 'x86/cleanups' into perf/uprobes	2012-03-13 16:33:03 +01:00
internal.h	Merge branch 'perf/urgent' into perf/core	2011-12-06 06:43:49 +01:00
Makefile	uprobes: Move to kernel/events/	2012-02-22 11:08:00 +01:00
ring_buffer.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-01-08 13:21:22 -08:00
uprobes.c	uprobes: Clean up and document write_opcode()->lock_page(old_page)	2012-07-30 11:27:20 +02:00