On 2/4/15 9:22 PM, Enrico Mioso wrote: > Hello guys. > I noticed from some time, that I can make mount options accumulate simply continously repeating them. > By typing: > sudo mount -t ext4 -o rw,noatime,nobarrier,nobarrier,nobarrier, ... > I can get: > $ dmesg | tail > [ 216.075581] EXT4-fs (sdb): mounted filesystem without journal. Opts: nobarrier > [ 472.851105] snd_hda_intel 0000:00:1b.0: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj. > [41950.250515] EXT4-fs (sdc1): re-mounted. Opts: nobarrier,nobarrier > [42093.049879] EXT4-fs (sdc1): re-mounted. Opts: nobarrier,nobarrier > [42095.673967] EXT4-fs (sdc1): re-mounted. Opts: nobarrier,nobarrier > [42095.954595] EXT4-fs (sdc1): re-mounted. Opts: nobarrier,nobarrier > [42096.220220] EXT4-fs (sdc1): re-mounted. Opts: nobarrier,nobarrier > [42103.212371] EXT4-fs (sdc1): re-mounted. Opts: nobarrier,nobarrier,nobarrier > [42128.137609] EXT4-fs (sdc1): re-mounted. Opts: nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier > [42144.960612] EXT4-fs (sdc1): re-mounted. Opts: nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier,nobarrier Hm, yes, it's really only cosmetic in that printk. > But the problem seems limited to the filesystem messages / something like that: > $ cat /proc/mounts ... > /dev/sdc1 /mnt/trekstor ext4 rw,noatime,nobarrier 0 0 Yep, because when this is printed, it simply looks at the set option flags, and essentially prints the option name once for each (non-default) flag that is set. What we probably would want is something similar to that code (in _ext4_show_options) which is more generic, and could generate a string for use in the remount case as well. -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
