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madvise.2: Clarifications for MADV_DONTNEED 

Reported-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-02-04 20:22:09 +01:00
parent 711c9c034f
commit cd15218ee1
1 changed files with 4 additions and 5 deletions
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man2/madvise.2
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@ -120,11 +120,10 @@ After a successful
operation,
the semantics of memory access in the specified region are changed:
subsequent accesses of pages in the range will succeed, but will result
either in reloading of the memory contents from the underlying mapped file
(see
.BR mmap (2))
or zero-fill-on-demand pages for mappings
without an underlying file.
in either reloading of the memory contents from the underlying mapped file
(for shared file mappings, shared anonymous mappings,
and shmem-based techniques such as System V shared memory segments)
or zero-fill-on-demand pages for anonymous private mappings.
.B MADV_DONTNEED
cannot be applied to locked pages or Huge TLB pages.