[PATCH 4/7] libxcmd: fix mount option parsing to find rt/log devices

[Christoph Hellwig]

On Tue, Aug 23, 2016 at 07:24:50PM -0700, Darrick J. Wong wrote:
> It turns out that glibc's hasmntopt implementation returns NULL
> if the opt parameter ends with an equals ('=').  Therefore, we
> cannot directly search for the option 'rtdev='; we must instead
> have hasmntopt look for 'rtdev' and look for the trailing equals
> sign ourselves.  This fixes xfs_info's reporting of external
> log and realtime device paths, and xfs_scrub will need it for
> data block scrubbing of realtime extents.

Looks good,

Reviewed-by: Christoph Hellwig <hch at lst.de>