Hi T.J., On 3/20/23 23:20, T.J. Alumbaugh wrote: > POSIX_FADV_NOREUSE is now supported in Linux[1]. > Updates text regarding former no op behavior. Indicates the readahead > policy and treatment of file pages read with this flag. > > [1]: https://lore.kernel.org/linux-mm/20221230215252.2628425-2-yuzhao@xxxxxxxxxx/ > > Signed-off-by: T.J. Alumbaugh <talumbau@xxxxxxxxxx> > --- > man2/posix_fadvise.2 | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/man2/posix_fadvise.2 b/man2/posix_fadvise.2 > index 57c65c810..9e562f74d 100644 > --- a/man2/posix_fadvise.2 > +++ b/man2/posix_fadvise.2 > @@ -64,7 +64,10 @@ The specified data will be accessed only once. > .IP > Before Linux 2.6.18, \fBPOSIX_FADV_NOREUSE\fP had the > same semantics as \fBPOSIX_FADV_WILLNEED\fP. > -This was probably a bug; since Linux 2.6.18, this flag is a no-op. > +This was probably a bug; from Linux 2.6.18 until Linux 6.2 this flag was > +a no-op. From Linux 6.3 and beyond, \fBPOSIX_FADV_NOREUSE\fP signals Please use semantic newlines. See man-pages(7): Use semantic newlines In the source of a manual page, new sentences should be started on new lines, long sentences should be split into lines at clause breaks (commas, semicolons, colons, and so on), and long clauses should be split at phrase boundaries. This convention, sometimes known as "semantic newlines", makes it easier to see the effect of patches, which often operate at the level of in‐ dividual sentences, clauses, or phrases. Also, please format with macros such as: .B POSIX_FADV_NOREUSE instead of inline with \f. Thanks, Alex > +that the LRU algorithm can ignore access to mapped page cache marked > +by this flag. This is useful, for example, while streaming large files. > .TP > .B POSIX_FADV_WILLNEED > The specified data will be accessed in the near future. > @@ -154,6 +157,7 @@ in POSIX.1-2001 TC1. > Under Linux, \fBPOSIX_FADV_NORMAL\fP sets the readahead window to the > default size for the backing device; \fBPOSIX_FADV_SEQUENTIAL\fP doubles > this size, and \fBPOSIX_FADV_RANDOM\fP disables file readahead entirely. > +\fBPOSIX_FADV_NOREUSE\fP does not modify the readahead window size. > These changes affect the entire file, not just the specified region > (but other open file handles to the same file are unaffected). > .PP -- <http://www.alejandro-colomar.es/> GPG key fingerprint: A9348594CE31283A826FBDD8D57633D441E25BB5
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