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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>		18 years ago
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Kconfig	…
Makefile	…
allocpercpu.c	…
backing-dev.c	…
bootmem.c	…
bounce.c	…
fadvise.c	…
filemap.c	[PATCH] dio: only call aio_complete() after returning -EIOCBQUEUED	18 years ago
filemap.h	…
filemap_xip.c	…
fremap.c	…
highmem.c	…
hugetlb.c	[PATCH] Pass vma argument to copy_user_highpage().	18 years ago
internal.h	…
madvise.c	…
memory.c	[PATCH] Pass vma argument to copy_user_highpage().	18 years ago
memory_hotplug.c	…
mempolicy.c	…
mempool.c	…
migrate.c	…
mincore.c	Fix incorrect user space access locking in mincore()	18 years ago
mlock.c	…
mmap.c	…
mmzone.c	…
mprotect.c	…
mremap.c	…
msync.c	…
nommu.c	…
oom_kill.c	[PATCH] cpuset: rework cpuset_zone_allowed api	18 years ago
page-writeback.c	[PATCH] io-accounting: write accounting	18 years ago
page_alloc.c	[PATCH] cpuset: rework cpuset_zone_allowed api	18 years ago
page_io.c	…
pdflush.c	…
prio_tree.c	…
readahead.c	[PATCH] io-accounting-read-accounting nfs fix	18 years ago
rmap.c	…
shmem.c	…
shmem_acl.c	…
slab.c	[PATCH] SLAB: use a multiply instead of a divide in obj_to_index()	18 years ago
slob.c	[PATCH] More slab.h cleanups	18 years ago
sparse.c	…
swap.c	…
swap_state.c	…
swapfile.c	…
thrash.c	…
tiny-shmem.c	…
truncate.c	[PATCH] io-accounting: write-cancel accounting	18 years ago
util.c	…
vmalloc.c	…
vmscan.c	[PATCH] cpuset: rework cpuset_zone_allowed api	18 years ago
vmstat.c	…