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Btrfs: show subvol= and subvolid= in /proc/mounts

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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.

Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Omar Sandoval
2015-05-18 02:16:31 -07:00
committed by Chris Mason
parent 05dbe6837b
commit c8d3fe028f
2 changed files with 5 additions and 0 deletions
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fs/seq_file.c
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@@ -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)
{