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md: rename ->stop to ->free

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Now that the ->stop function only frees the private data,
rename is accordingly.

Also pass in the private pointer as an arg rather than using
mddev->private.  This flexibility will be useful in level_store().

Finally, don't clear ->private.  It doesn't make sense to clear
it seeing that isn't what we free, and it is no longer necessary
to clear ->private (it was some time ago before  ->to_remove was
introduced).

Setting ->to_remove in ->free() is a bit of a wart, but not a
big problem at the moment.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown
2014-12-15 12:56:58 +11:00
parent 5aa61f427e
commit afa0f557cb
9 changed files with 35 additions and 50 deletions
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10
drivers/md/multipath.c
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@@ -399,7 +399,7 @@ static int multipath_run (struct mddev *mddev)
/*
* copy the already verified devices into our private MULTIPATH
* bookkeeping area. [whatever we allocate in multipath_run(),
* should be freed in multipath_stop()]
* should be freed in multipath_free()]
*/
conf = kzalloc(sizeof(struct mpconf), GFP_KERNEL);
@@ -500,15 +500,13 @@ out:
return -EIO;
}
static int multipath_stop (struct mddev *mddev)
static void multipath_free(struct mddev *mddev, void *priv)
{
struct mpconf *conf = mddev->private;
struct mpconf *conf = priv;
mempool_destroy(conf->pool);
kfree(conf->multipaths);
kfree(conf);
mddev->private = NULL;
return 0;
}
static struct md_personality multipath_personality =
@@ -518,7 +516,7 @@ static struct md_personality multipath_personality =
.owner = THIS_MODULE,
.make_request = multipath_make_request,
.run = multipath_run,
.stop = multipath_stop,
.free = multipath_free,
.status = multipath_status,
.error_handler = multipath_error,
.hot_add_disk = multipath_add_disk,