md: Fix missing unused status line of /proc/mdstat
Reading /proc/mdstat with a read buffer size that would not fit the unused status line in the first read will skip this line from the output. So 'dd if=/proc/mdstat bs=64 2>/dev/null' will not print something like: unused devices: <none> Don't return NULL immediately in start() for v=2 but call show() once to print the status line also for multiple reads. Cc: stable@vger.kernel.org Fixes: 1f4aace6 ("fs/seq_file.c: simplify seq_file iteration code and interface") Signed-off-by:Jan Glauber <jglauber@digitalocean.com> Signed-off-by:
Song Liu <songliubraving@fb.com>
parent
254c271d
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