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![]() probe_kernel_address() is basically the same as the (later added) probe_kernel_read(). The return value on EFAULT is a bit different: probe_kernel_address() returns number-of-bytes-not-copied whereas probe_kernel_read() returns -EFAULT. All callers have been checked, none cared. probe_kernel_read() can be overridden by the architecture whereas probe_kernel_address() cannot. parisc, blackfin and um do this, to insert additional checking. Hence this patch possibly fixes obscure bugs, although there are only two probe_kernel_address() callsites outside arch/. My first attempt involved removing probe_kernel_address() entirely and converting all callsites to use probe_kernel_read() directly, but that got tiresome. This patch shrinks mm/slab_common.o by 218 bytes. For a single probe_kernel_address() callsite. Cc: Steven Miao <realmz6@gmail.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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.. | ||
ge | ||
qe_lib | ||
xics | ||
6xx-suspend.S | ||
axonram.c | ||
cpm1.c | ||
cpm2.c | ||
cpm2_pic.c | ||
cpm2_pic.h | ||
cpm_common.c | ||
dart.h | ||
dart_iommu.c | ||
dcr-low.S | ||
dcr.c | ||
ehv_pic.c | ||
fsl_85xx_cache_ctlr.h | ||
fsl_85xx_cache_sram.c | ||
fsl_85xx_l2ctlr.c | ||
fsl_gtm.c | ||
fsl_lbc.c | ||
fsl_mpic_err.c | ||
fsl_mpic_timer_wakeup.c | ||
fsl_msi.c | ||
fsl_msi.h | ||
fsl_pci.c | ||
fsl_pci.h | ||
fsl_pmc.c | ||
fsl_rio.c | ||
fsl_rio.h | ||
fsl_rmu.c | ||
fsl_soc.c | ||
fsl_soc.h | ||
grackle.c | ||
i8259.c | ||
indirect_pci.c | ||
ipic.c | ||
ipic.h | ||
Kconfig | ||
Makefile | ||
micropatch.c | ||
mmio_nvram.c | ||
mpc5xxx_clocks.c | ||
mpc8xx_pic.c | ||
mpc8xx_pic.h | ||
mpic.c | ||
mpic.h | ||
mpic_msgr.c | ||
mpic_msi.c | ||
mpic_timer.c | ||
mpic_u3msi.c | ||
msi_bitmap.c | ||
mv64x60.h | ||
mv64x60_dev.c | ||
mv64x60_pci.c | ||
mv64x60_pic.c | ||
mv64x60_udbg.c | ||
of_rtc.c | ||
pmi.c | ||
ppc4xx_cpm.c | ||
ppc4xx_gpio.c | ||
ppc4xx_hsta_msi.c | ||
ppc4xx_msi.c | ||
ppc4xx_ocm.c | ||
ppc4xx_pci.c | ||
ppc4xx_pci.h | ||
ppc4xx_soc.c | ||
rtc_cmos_setup.c | ||
scom.c | ||
simple_gpio.c | ||
simple_gpio.h | ||
tsi108_dev.c | ||
tsi108_pci.c | ||
udbg_memcons.c | ||
uic.c | ||
xilinx_intc.c | ||
xilinx_pci.c |