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OpenCloudOS-Kernel/arch/sh/mm
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Stas Sergeev caac7e6d00 sh: get_user_pages_fast() must flush cache 
This patch avoids fuse hangs on sh4 by flushing the cache on
get_user_pages_fast().  This is not necessary a good thing to do, but
get_user_pages() does this, so get_user_pages_fast() should too.

Please note the patch for mips arch that addresses the similar problem:
  https://kernel.googlesource.com/pub/scm/linux/kernel/git/ralf/linux/+/linux-3.4.50%5E!/#F0

They basically simply disable get_user_pages_fast() at all, using a
fall-back to get_user_pages().  But my fix is different, it adds an
explicit cache flushes.

Signed-off-by: Stas Sergeev <stsp@users.sourceforge.net>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2014-09-10 15:42:12 -07:00
..
Kconfig memblock: kill "config MAX_ACTIVE_REGIONS" 2013-04-18 13:03:53 +10:00
Makefile sh64: Fix up caller-save register settings for fast-path. 2012-05-14 16:46:07 +09:00
alignment.c procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
asids-debugfs.c arch/sh/mm/asids-debugfs.c: use PTR_ERR_OR_ZERO 2014-08-06 18:01:12 -07:00
cache-debugfs.c sh: prefix sh-specific "CCR" and "CCR2" by "SH_" 2014-03-04 07:55:49 -08:00
cache-sh2.c sh: prefix sh-specific "CCR" and "CCR2" by "SH_" 2014-03-04 07:55:49 -08:00
cache-sh2a.c sh: prefix sh-specific "CCR" and "CCR2" by "SH_" 2014-03-04 07:55:49 -08:00
cache-sh3.c sh: Mass ctrl_in/outX to __raw_read/writeX conversion. 2010-01-26 12:58:40 +09:00
cache-sh4.c sh: prefix sh-specific "CCR" and "CCR2" by "SH_" 2014-03-04 07:55:49 -08:00
cache-sh5.c tree-wide: fix comment/printk typos 2010-11-01 15:38:34 -04:00
cache-sh7705.c sh: Assume new page cache pages have dirty dcache lines. 2010-12-01 15:39:51 +09:00
cache-shx3.c sh: prefix sh-specific "CCR" and "CCR2" by "SH_" 2014-03-04 07:55:49 -08:00
cache.c flush_icache_range: export symbol to fix build errors 2014-08-29 16:28:17 -07:00
consistent.c SH: adapt for dma_map_ops changes 2012-03-28 16:36:37 +02:00
extable_32.c sh: Split out extable.c _32 and _64 variants. 2008-01-28 13:18:44 +09:00
extable_64.c sh: comment tidying for sh64->sh migration. 2008-01-28 13:18:58 +09:00
fault.c arch: mm: pass userspace fault flag to generic fault handler 2013-09-12 15:38:01 -07:00
flush-sh4.c sh: fix up fallout from system.h disintegration. 2012-03-30 19:29:57 +09:00
gup.c sh: get_user_pages_fast() must flush cache 2014-09-10 15:42:12 -07:00
hugetlbpage.c hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-04 16:53:51 -07:00
init.c memory-hotplug: sh: suitable memory should go to ZONE_MOVABLE 2014-08-06 18:01:21 -07:00
ioremap.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ioremap_fixed.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
kmap.c sh: Assume new page cache pages have dirty dcache lines. 2010-12-01 15:39:51 +09:00
mmap.c Merge branch 'akpm' (Andrew's patchbomb) 2012-12-11 18:05:37 -08:00
nommu.c sh: stub __flush_tlb_global() definition for nommu. 2010-08-16 14:53:01 +09:00
numa.c lmb: rename to memblock 2010-07-14 17:14:00 +10:00
pgtable.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pmb.c Disintegrate asm/system.h for SH 2012-03-28 18:30:03 +01:00
sram.c sh: fix up fallout from system.h disintegration. 2012-03-30 19:29:57 +09:00
tlb-debugfs.c sh: provide generic arch_debugfs_dir. 2010-09-24 04:04:26 +09:00
tlb-pteaex.c Disintegrate asm/system.h for SH 2012-03-28 18:30:03 +01:00
tlb-sh3.c Disintegrate asm/system.h for SH 2012-03-28 18:30:03 +01:00
tlb-sh4.c Disintegrate asm/system.h for SH 2012-03-28 18:30:03 +01:00
tlb-sh5.c sh: delete __cpuinit usage from all sh files 2013-07-14 19:36:53 -04:00
tlb-urb.c sh: update the TLB replacement counter for entry wiring. 2010-03-26 11:37:16 +09:00
tlbex_32.c sh: Enable shared page fault handler for _32/_64. 2012-05-14 15:33:28 +09:00
tlbex_64.c sh64: Set additional fault code values. 2012-05-14 17:46:49 +09:00
tlbflush_32.c sh: Provide a global TLB flush for U/I-TLB clear. 2010-07-02 15:44:09 +09:00
tlbflush_64.c sh64: Migrate to __update_tlb() API. 2012-05-14 15:52:28 +09:00
uncached.c sh: nommu: use 32-bit phys mode. 2010-11-04 12:32:24 +09:00