| Message ID | 229b56bc5f19138a74e92869c22934224575216f.1428614837.git.osandov@osandov.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
On Thu, Apr 09, 2015 at 02:34:56PM -0700, Omar Sandoval wrote: > Now that we're guaranteed to have a meaningful root dentry, we can just > export seq_dentry() and use it in btrfs_show_options(). The subvolume ID > is easy to get and can also be useful, so put that in there, too. > > Signed-off-by: Omar Sandoval <osandov@osandov.com> Reviewed-by: David Sterba <dsterba@suse.cz> -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 80a8047..f334cc4 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1193,6 +1193,10 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry) seq_puts(seq, ",fatal_errors=panic"); if (info->commit_interval != BTRFS_DEFAULT_COMMIT_INTERVAL) seq_printf(seq, ",commit=%d", info->commit_interval); + seq_printf(seq, ",subvolid=%llu", + BTRFS_I(d_inode(dentry))->root->root_key.objectid); + seq_puts(seq, ",subvol="); + seq_dentry(seq, dentry, " \t\n\\"); return 0; } diff --git a/fs/seq_file.c b/fs/seq_file.c index 555f821..52b4927 100644 --- a/fs/seq_file.c +++ b/fs/seq_file.c @@ -538,6 +538,7 @@ int seq_dentry(struct seq_file *m, struct dentry *dentry, const char *esc) return res; } +EXPORT_SYMBOL(seq_dentry); static void *single_start(struct seq_file *p, loff_t *pos) {
Now that we're guaranteed to have a meaningful root dentry, we can just export seq_dentry() and use it in btrfs_show_options(). The subvolume ID is easy to get and can also be useful, so put that in there, too. Signed-off-by: Omar Sandoval <osandov@osandov.com> --- fs/btrfs/super.c | 4 ++++ fs/seq_file.c | 1 + 2 files changed, 5 insertions(+)