On Thu, 2016-01-07 at 16:46 +0100, Stanislav Kinsburskiy wrote: > Good day, gentlemen. > > Could you update, what's the status with this patch? > Without it it's impossible to match process pipe with kernel pipe, > while > this is "must have" to be able to migrate AutoFS via CRIU. Right, I did mean to reply to this mail but have been distracted by family stuff. I don't know what CRIU is and people looking at changelog entries shouldn't need to do a web search to find out. Could you change it a little. I'm also not sure whether to forward this (assuming the description is updated a little) to Al or to include it in the series to rename autofs4 to autofs that I'm hoping to ask be included in linux-next fairly soon. Passing it on to Al will likely interfere with the series coming from linux-next so that could be bit of a hassle. Another thing I'm wondering about is the order this entry will appear at in the options. You order choice is sensible though and autofs shouldn't have a problem with the inserted option but other applications might. Finally, and perhaps most importantly, I don't get what your trying to do, you also haven't given any clues to that in the patch dscription. IOW how do you expect to use this. > > > 16.12.2015 13:02, Stanislav Kinsburskiy пишет: > > This is required for CRIU to migrate a mount point, when write end > > in user > > space is closed. Like I said what does this mean. autofs doesn't need this when it re-constructs a mount tree from existing mounts on re-start or after a SIGKILL on the automount process. How is this different and how will it be used? The question to be answered here is "is this the best way to do it and will it work for the autofs mount types you expect it to"? > > To be able to migrate such mount, read end of the pipe have to be > > searched > > within autofs master process, and pipe inode will be used as a key. > > > > Signed-off-by: Stanislav Kinsburskiy <skinsbursky@xxxxxxxxxxxxx> > > --- > > fs/autofs4/inode.c | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c > > index a3ae0b2..16f875a 100644 > > --- a/fs/autofs4/inode.c > > +++ b/fs/autofs4/inode.c > > @@ -77,6 +77,10 @@ static int autofs4_show_options(struct seq_file > > *m, struct dentry *root) > > return 0; > > > > seq_printf(m, ",fd=%d", sbi->pipefd); > > + if (sbi->pipe) > > + seq_printf(m, ",pipe_ino=%ld", sbi->pipe->f_inode > > ->i_ino); > > + else > > + seq_printf(m, ",pipe_ino=-1"); > > if (!uid_eq(root_inode->i_uid, GLOBAL_ROOT_UID)) > > seq_printf(m, ",uid=%u", > > from_kuid_munged(&init_user_ns, > > root_inode->i_uid)); > > > -- To unsubscribe from this list: send the line "unsubscribe autofs" in
