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| author | todd stecher <todd.stecher@gmail.com> | 2009-02-17 16:16:35 -0800 |
|---|---|---|
| committer | Steven Danneman <steven.danneman@isilon.com> | 2009-02-18 18:08:32 -0800 |
| commit | c441f58dedc465f59060296815a0bc7f9aeb743f (patch) | |
| tree | f6443ed770146ba26e9c09370c1a9bddc22252fe /source3/configure.in | |
| parent | cdcd525a05ce851dcb338dfa8c9be3009194aa96 (diff) | |
| download | samba-c441f58dedc465f59060296815a0bc7f9aeb743f.tar.gz samba-c441f58dedc465f59060296815a0bc7f9aeb743f.tar.bz2 samba-c441f58dedc465f59060296815a0bc7f9aeb743f.zip | |
S3: Allow SMBD processes to survive in low memory condidtions
This commit adds a configure argument which allows for setting MADV_PROTECT
in the madvise() API. With this enabled the kernel won't kill SMBD when
it's running low on memory.
Diffstat (limited to 'source3/configure.in')
| -rw-r--r-- | source3/configure.in | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/source3/configure.in b/source3/configure.in index 691d0a80bc..57d475fcc5 100644 --- a/source3/configure.in +++ b/source3/configure.in @@ -4718,6 +4718,34 @@ SMB_LIBRARY(lua, 0) SMB_LIBRARY(addns, 0, no, [undefined API]) +################################################# +# check to see if we should set the protected madvise flag, +# which will keep smbd alive in low memory conditions +AC_MSG_CHECKING(whether to protect smbd from being killed in low memory) +AC_ARG_WITH(madvise-protect, +[AS_HELP_STRING([--with-madvise-protect], [Include low memory madvise protection (default=no)])], +[ case "$withval" in + yes) + AC_TRY_COMPILE([ + #include <sys/mman.h> + ],[ + int a = MADV_PROTECT; + ], + [samba_cv_madvise_protect=yes], + [samba_cv_madvise_protect=no]) + if test x"$samba_cv_madvise_protect" = x"yes"; then + AC_MSG_RESULT(yes) + AC_DEFINE(WITH_MADVISE_PROTECTED,1,[Whether to include low memory protection support]) + else + AC_MSG_ERROR(Low memory protection supporte requires availability of MADVISE_PROTECT flag.) + fi + ;; + *) + AC_MSG_RESULT(no) + ;; + esac ], + AC_MSG_RESULT(no) +) ################################################# # these tests are taken from the GNU fileutils package |