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NeilBrown 7c12d81134 [PATCH] Make copy_from_user_inatomic NOT zero the tail on i386 ... As described in a previous patch and documented in mm/filemap.h, copy_from_user_inatomic* shouldn't zero out the tail of the buffer after an incomplete copy. This patch implements that change for i386. For the _nocache version, a new __copy_user_intel_nocache is defined similar to copy_user_zeroio_intel_nocache, and this is ultimately used for the copy. For the regular version, __copy_from_user_ll_nozero is defined which uses __copy_user and __copy_user_intel - the later needs casts to reposition the __user annotations. If copy_from_user_atomic is given a constant length of 1, 2, or 4, then we do still zero the destintion on failure. This didn't seem worth the effort of fixing as the places where it is used really don't care. Signed-off-by: Neil Brown <neilb@suse.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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alpha	…
arm	[PATCH] kernel/sys.c: cleanups	19 years ago
arm26	…
cris	[PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHM	19 years ago
frv	[PATCH] More BUG_ON conversion	19 years ago
h8300	…
i386	[PATCH] Make copy_from_user_inatomic NOT zero the tail on i386	19 years ago
ia64	[PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHM	19 years ago
m32r	[PATCH] m32r: update switch_to macro for tuning	19 years ago
m68k	[PATCH] m68k: convert VME irq code	19 years ago
m68knommu	…
mips	[PATCH] kernel/sys.c: cleanups	19 years ago
parisc	…
powerpc	[PATCH] Rewritten backlight infrastructure for portable Apple computers	19 years ago
ppc	[PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHM	19 years ago
s390	…
sh	…
sh64	…
sparc	[SBUS]: Rewrite and plug into of_device framework.	19 years ago
sparc64	…
um	[PATCH] kernel/sys.c: cleanups	19 years ago
v850	…
x86_64	…
xtensa	[PATCH] mm: remove VM_LOCKED before remap_pfn_range and drop VM_SHM	19 years ago