Linus Torvalds 2f77d10705 Fix incorrect user space access locking in mincore() ... Doug Chapman noticed that mincore() will doa "copy_to_user()" of the result while holding the mmap semaphore for reading, which is a big no-no. While a recursive read-lock on a semaphore in the case of a page fault happens to work, we don't actually allow them due to deadlock schenarios with writers due to fairness issues. Doug and Marcel sent in a patch to fix it, but I decided to just rewrite the mess instead - not just fixing the locking problem, but making the code smaller and (imho) much easier to understand. Cc: Doug Chapman <dchapman@redhat.com> Cc: Marcel Holtmann <holtmann@redhat.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-12-16 09:44:32 -08:00
..
allocpercpu.c	[PATCH] Allow NULL pointers in percpu_free	2006-12-07 08:39:22 -08:00
backing-dev.c	[PATCH] separate bdi congestion functions from queue congestion functions	2006-10-20 10:26:35 -07:00
bootmem.c	[PATCH] remove EXPORT_UNUSED_SYMBOL'ed symbols	2006-12-07 08:39:44 -08:00
bounce.c
fadvise.c	[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path	2006-12-08 08:28:43 -08:00
filemap_xip.c	[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path	2006-12-08 08:28:43 -08:00
filemap.c	[PATCH] dio: only call aio_complete() after returning -EIOCBQUEUED	2006-12-10 09:57:21 -08:00
filemap.h
fremap.c	[PATCH] kill install_file_pte's pte_val	2006-12-07 08:39:23 -08:00
highmem.c
hugetlb.c	[PATCH] Pass vma argument to copy_user_highpage().	2006-12-13 09:27:08 -08:00
internal.h
Kconfig
madvise.c
Makefile	[PATCH] separate bdi congestion functions from queue congestion functions	2006-10-20 10:26:35 -07:00
memory_hotplug.c	[PATCH] Get rid of zone_table[]	2006-12-07 08:39:20 -08:00
memory.c	[PATCH] Pass vma argument to copy_user_highpage().	2006-12-13 09:27:08 -08:00
mempolicy.c	[PATCH] struct path: convert mm	2006-12-08 08:28:47 -08:00
mempool.c
migrate.c	[PATCH] radix-tree: RCU lockless readside	2006-12-07 08:39:25 -08:00
mincore.c	Fix incorrect user space access locking in mincore()	2006-12-16 09:44:32 -08:00
mlock.c	[PATCH] mlock cleanup	2006-12-07 08:39:22 -08:00
mmap.c	[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path	2006-12-08 08:28:43 -08:00
mmzone.c	[PATCH] remove EXPORT_UNUSED_SYMBOL'ed symbols	2006-12-07 08:39:44 -08:00
mprotect.c
mremap.c
msync.c
nommu.c	[PATCH] struct path: convert mm	2006-12-08 08:28:47 -08:00
oom_kill.c	[PATCH] cpuset: rework cpuset_zone_allowed api	2006-12-13 09:05:49 -08:00
page_alloc.c	[PATCH] cpuset: rework cpuset_zone_allowed api	2006-12-13 09:05:49 -08:00
page_io.c	[PATCH] swsusp: use block device offsets to identify swap locations	2006-12-07 08:39:27 -08:00
page-writeback.c	[PATCH] io-accounting: write accounting	2006-12-10 09:55:41 -08:00
pdflush.c	[PATCH] Add include/linux/freezer.h and move definitions from sched.h	2006-12-07 08:39:27 -08:00
prio_tree.c
readahead.c	[PATCH] io-accounting-read-accounting nfs fix	2006-12-10 09:55:41 -08:00
rmap.c	[PATCH] mm: more commenting on lock ordering	2006-10-20 10:26:44 -07:00
shmem_acl.c
shmem.c	[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path	2006-12-08 08:28:43 -08:00
slab.c	[PATCH] SLAB: use a multiply instead of a divide in obj_to_index()	2006-12-13 09:05:49 -08:00
slob.c	[PATCH] More slab.h cleanups	2006-12-13 09:05:49 -08:00
sparse.c	[PATCH] numa node ids are int, page_to_nid and zone_to_nid should return int	2006-12-07 08:39:23 -08:00
swap_state.c
swap.c	[PATCH] hotplug CPU: clean up hotcpu_notifier() use	2006-12-07 08:39:39 -08:00
swapfile.c	[PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path	2006-12-08 08:28:43 -08:00
thrash.c	[PATCH] make mm/thrash.c:global_faults static	2006-12-07 08:39:22 -08:00
tiny-shmem.c	[PATCH] struct path: convert mm	2006-12-08 08:28:47 -08:00
truncate.c	[PATCH] io-accounting: write-cancel accounting	2006-12-10 09:55:41 -08:00
util.c
vmalloc.c	[PATCH] Fix strange size check in __get_vm_area_node()	2006-11-16 11:43:38 -08:00
vmscan.c	[PATCH] cpuset: rework cpuset_zone_allowed api	2006-12-13 09:05:49 -08:00
vmstat.c	[PATCH] struct seq_operations and struct file_operations constification	2006-12-07 08:39:46 -08:00