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posix_fadvice advice parameter change

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With a bit of manual rereading and thinking I came to conclusion
that users will most likely fetch same data over and over again.
Advicing to kernel to keep pages into cache seems to be correct
thing to do.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2011-01-22 22:05:53 +01:00
parent f32e023ecf
commit 10488b0a04
1 changed files with 10 additions and 10 deletions
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20
src/getdata.c
View file

@ -76,16 +76,16 @@ int parse_leases(void)
err(EXIT_FAILURE, "parse_leases: %s",
config.dhcpdlease_file);
}
#ifdef POSIX_FADV_NOREUSE
posix_fadvise((long) dhcpd_leases, 0, 0, POSIX_FADV_NOREUSE);
#ifdef POSIX_FADV_WILLNEED
posix_fadvise((long) dhcpd_leases, 0, 0, POSIX_FADV_WILLNEED);
if (errno) {
err(EXIT_FAILURE, "parse_leases: fadvise noreuse");
err(EXIT_FAILURE, "parse_leases: fadvise %s", config.dhcpdlease_file);
}
#endif /* POSIX_FADV_NOREUSE */
#endif /* POSIX_FADV_WILLNEED */
#ifdef POSIX_FADV_SEQUENTIAL
posix_fadvise((long) dhcpd_leases, 0, 0, POSIX_FADV_SEQUENTIAL);
if (errno) {
err(EXIT_FAILURE, "parse_leases: fadvise sequential");
err(EXIT_FAILURE, "parse_leases: fadvise %s", config.dhcpdlease_file);
}
#endif /* POSIX_FADV_SEQUENTIAL */
@ -228,16 +228,16 @@ char *parse_config(int is_include, char *config_file,
if (dhcpd_config == NULL) {
err(EXIT_FAILURE, "parse_config: %s", config_file);
}
#ifdef POSIX_FADV_NOREUSE
posix_fadvise((long) dhcpd_config, 0, 0, POSIX_FADV_NOREUSE);
#ifdef POSIX_FADV_WILLNEED
posix_fadvise((long) dhcpd_config, 0, 0, POSIX_FADV_WILLNEED);
if (errno) {
err(EXIT_FAILURE, "parse_config: fadvise noreuse");
err(EXIT_FAILURE, "parse_config: fadvise %s", config_file);
}
#endif /* POSIX_FADV_NOREUSE */
#endif /* POSIX_FADV_WILLNEED */
#ifdef POSIX_FADV_SEQUENTIAL
posix_fadvise((long) dhcpd_config, 0, 0, POSIX_FADV_SEQUENTIAL);
if (errno) {
err(EXIT_FAILURE, "parse_config: fadvise sequential");
err(EXIT_FAILURE, "parse_config: fadvise %s", config_file);
}
#endif /* POSIX_FADV_SEQUENTIAL */