https://github.com/torvalds/linux
Revision 9956edf37e65e93fbb76dcff1236dff2323d306a authored by Hugh Dickins on 10 November 2016, 18:46:11 UTC, committed by Linus Torvalds on 11 November 2016, 16:12:37 UTC
If shmem_alloc_page() does not set PageLocked and PageSwapBacked, then shmem_replace_page() needs to do so for itself. Without this, it puts newpage on the wrong lru, re-unlocks the unlocked newpage, and system descends into "Bad page" reports and freeze; or if CONFIG_DEBUG_VM=y, it hits an earlier VM_BUG_ON_PAGE(!PageLocked), depending on config. But shmem_replace_page() is not a common path: it's only called when swapin (or swapoff) finds the page was already read into an unsuitable zone: usually all zones are suitable, but gem objects for a few drm devices (gma500, omapdrm, crestline, broadwater) require zone DMA32 if there's more than 4GB of ram. Fixes: 800d8c63b2e9 ("shmem: add huge pages support") Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1611062003510.11253@eggly.anvils Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: <stable@vger.kernel.org> [4.8.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 5e322be
Tip revision: 9956edf37e65e93fbb76dcff1236dff2323d306a authored by Hugh Dickins on 10 November 2016, 18:46:11 UTC
shmem: fix pageflags after swapping DMA32 object
shmem: fix pageflags after swapping DMA32 object
Tip revision: 9956edf
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COPYING | -rw-r--r-- | 18.3 KB |
CREDITS | -rw-r--r-- | 96.0 KB |
Kbuild | -rw-r--r-- | 2.8 KB |
Kconfig | -rw-r--r-- | 252 bytes |
MAINTAINERS | -rw-r--r-- | 373.4 KB |
Makefile | -rw-r--r-- | 57.3 KB |
README | -rw-r--r-- | 17.9 KB |
REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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