Some overlayfs mount options cannot be changed via remount, but current remount does not validate options even if specifying unrecognized options. This patch series adjust option parsing to support remount, Considering backward compatibility, in current stage we only print warning message but not return error when detecting unchangeable options in remount. However, if user specify unrecognized or invalid options then return -EINVAL. This is also a starting point to exploring how to change options (e.g. ro->rw with specifying workdir&upperdir) in remount. Thanks, Chengguang. --- Chengguang Xu (3): ovl: adjust option parsing for supporting remount ovl: move the code of ovl_remount() to behind ovl_parse_opt() ovl: print warning when specifying unchangeable options in remount fs/overlayfs/super.c | 151 ++++++++++++++++++++++++++++++++++++--------------- 1 file changed, 108 insertions(+), 43 deletions(-) -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
