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madvise.2: Explain MADV_REMOVE in terms of file hole punching 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2015-02-03 16:21:13 +01:00
parent c73c7130f7
commit 49170db521
1 changed files with 6 additions and 0 deletions
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@ -138,6 +138,12 @@ interface available on other implementations:
.\" commit f6b3ec238d12c8cc6cc71490c6e3127988460349
Free up a given range of pages
and its associated backing store.
This is equivalent to punching a hole in the corresponding byte
range of the backing store (see
.BR fallocate (2)).
Subsequent accesses in the specified address range will see
bytes containing zero.
Currently,
.\" 2.6.18-rc5
only shmfs/tmpfs supports this; other filesystems return with the