Skip to main content

Browse the archive

https://github.com/torvalds/linux
23 October 2021, 00:29:24 UTC
Revision 701270fa193aadf00bdcf607738f64997275d4c7 authored by Hugh Dickins on 30 November 2018, 22:10:25 UTC, committed by Linus Torvalds on 30 November 2018, 22:56:15 UTC 
mm/khugepaged: collapse_shmem() stop if punched or truncated
 
Huge tmpfs testing showed that although collapse_shmem() recognizes a
concurrently truncated or hole-punched page correctly, its handling of
holes was liable to refill an emptied extent.  Add check to stop that.

Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1811261522040.2275@eggly.anvils
Fixes: f3f0e1d2150b2 ("khugepaged: add support of collapse for tmpfs/shmem pages")
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Matthew Wilcox <willy@infradead.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: <stable@vger.kernel.org>	[4.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 006d3ff
History
Tip revision: 701270fa193aadf00bdcf607738f64997275d4c7 authored by Hugh Dickins on 30 November 2018, 22:10:25 UTC
mm/khugepaged: collapse_shmem() stop if punched or truncated
Tip revision: 701270f
File Mode Size
alloc
debugfs
atomic_as_refcounter.cocci -rw-r--r-- 2.2 KB
check_bq27xxx_data.cocci -rw-r--r-- 3.4 KB
d_find_alias.cocci -rw-r--r-- 1.3 KB
drm-get-put.cocci -rw-r--r-- 1.5 KB
err_cast.cocci -rw-r--r-- 1.1 KB
kstrdup.cocci -rw-r--r-- 2.4 KB
memdup.cocci -rw-r--r-- 1.3 KB
memdup_user.cocci -rw-r--r-- 1.3 KB
platform_no_drv_owner.cocci -rw-r--r-- 3.8 KB
pm_runtime.cocci -rw-r--r-- 2.3 KB
ptr_ret.cocci -rw-r--r-- 1.8 KB
resource_size.cocci -rw-r--r-- 2.1 KB
simple_open.cocci -rw-r--r-- 1.2 KB
vma_pages.cocci -rw-r--r-- 1.5 KB
back to top