On Fri, Dec 18, 2015 at 10:50 AM, Mandeep Sandhu <mandeepsandhu.chd@xxxxxxxxx> wrote: > You've removed the strictatime option altogether. So how does that > satisfy people who _do_ want it? ...actually it looks like I was an idiot and got my diff backwards when I pulled it out of git :P Here's the correct version. diff --git a/fs/Kconfig b/fs/Kconfig index 6ce72d8..4b917eb 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -4,6 +4,17 @@ menu "File systems" +config DEFAULT_STRICTATIME + bool "Use strictatime by default" + default n + help + Use strictatime as a default mount option. + + Strictatime preserves ancient historic behavior of keeping the atime field always up to date. + However, it was changed in 2007 to relatime to reduce I/O load on block devices. + + If unsure, say N. + # Use unaligned word dcache accesses config DCACHE_WORD_ACCESS bool diff --git a/fs/namespace.c b/fs/namespace.c index 0570729..48e7c15 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -2680,9 +2680,15 @@ long do_mount(const char *dev_name, const char __user *dir_name, if (retval) goto dput_out; - /* Default to relatime unless overriden */ +#ifdef CONFIG_DEFAULT_STRICTATIME + /* Default to strictatime unless overridden */ + if (flags & MS_RELATIME) + mnt_flags |= MNT_RELATIME; +#else + /* Default to relatime unless overridden */ if (!(flags & MS_NOATIME)) mnt_flags |= MNT_RELATIME; +#endif /* Separate the per-mountpoint flags */ if (flags & MS_NOSUID) _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies