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fstab-generator: document why we copy the root device into the usr device if unset 

Let's a comment about this, to avoid questions popping up like in #2344.
This commit is contained in:
Lennart Poettering 2016-06-24 21:00:11 +02:00
parent e34e72fb18
commit 40472036cf
1 changed files with 1 additions and 3 deletions
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4
src/fstab-generator/fstab-generator.c
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@ -548,22 +548,20 @@ static int add_sysroot_usr_mount(void) {
return 0;
if (arg_root_what && !arg_usr_what) {
/* Copy over the root device, in case the /usr mount just differs in a mount option (consider btrfs subvolumes) */
arg_usr_what = strdup(arg_root_what);
if (!arg_usr_what)
return log_oom();
}
if (arg_root_fstype && !arg_usr_fstype) {
arg_usr_fstype = strdup(arg_root_fstype);
if (!arg_usr_fstype)
return log_oom();
}
if (arg_root_options && !arg_usr_options) {
arg_usr_options = strdup(arg_root_options);
if (!arg_usr_options)
return log_oom();
}