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tmpfs.5: Document 'huge' mount options 

Based on text from Documentation/vm/transhuge.txt.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2018-02-04 09:25:26 +01:00
parent e121158211
commit b230d246b2
1 changed files with 12 additions and 6 deletions
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@ -144,22 +144,28 @@ value is one of the following:
.RS
.TP
.B never
Do not allocate huge pages.
This is the default.
.TP
.B always
Attempt to allocate huge pages every time a new page is needed.
.TP
.B within_size
Only allocate huge page if it will be fully within
.IR i_size .
Also respect
.BR fadvise (2)/ madvise (2)
hints
.TP
.B advise
Only allocate huge pages if requested with
.BR fadvise (2)/ madvise (2).
.TP
.B deny
For use in emergencies, to force the huge option off from all mounts.
.TP
.B force
Force the huge option on for all mounts; useful for testing.
.RE
.TP
.BR mpol "=\fImpol_option\fR (since Linux 2.6.15)"