[PATCH 10/13] Monitor, Incremental: use device policies

[Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>]

spare_criteria is expanded to contain policies which will be generated
by handler's get_spare_criteria() function. It provides a way to
test device for metadata specific policies earlier than during
add_do_super(), when device is already removed from previous
array/container for Monitor.

For Incremental, it ensures that all criteria are tested when trying
spare. It is not tested when device contains valid metadata.

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
---
 Incremental.c |  2 +-
 Monitor.c     |  3 ++-
 mdadm.h       |  5 +++--
 util.c        | 13 +++++++++----
 4 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/Incremental.c b/Incremental.c
index 66c2cc86dc5a..958ba9ba7851 100644
--- a/Incremental.c
+++ b/Incremental.c
@@ -865,7 +865,7 @@ mdadm_status_t incremental_external_test_spare_criteria(struct supertype *st, ch
 		goto out;
 	}
 
-	if (!disk_fd_matches_criteria(disk_fd, &sc)) {
+	if (!disk_fd_matches_criteria(dup, disk_fd, &sc)) {
 		if (verbose > 1)
 			pr_err("Disk does not match spare criteria for %s\n", container_devname);
 		goto out;
diff --git a/Monitor.c b/Monitor.c
index 2167523ca3e2..caf6e79f1066 100644
--- a/Monitor.c
+++ b/Monitor.c
@@ -1042,7 +1042,7 @@ static dev_t choose_spare(struct state *from, struct state *to,
 			    test_partition_from_id(from->devid[d]))
 				continue;
 
-			if (devid_matches_criteria(from->devid[d], sc) == false)
+			if (devid_matches_criteria(to->metadata, from->devid[d], sc) == false)
 				continue;
 
 			pol = devid_policy(from->devid[d]);
@@ -1190,6 +1190,7 @@ static void try_spare_migration(struct state *statelist)
 				}
 			}
 			domain_free(domlist);
+			dev_policy_free(sc.pols);
 		}
 }
 
diff --git a/mdadm.h b/mdadm.h
index af2bc714bacb..cfa11391415a 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -433,6 +433,7 @@ struct spare_criteria {
 	bool criteria_set;
 	unsigned long long min_size;
 	unsigned int sector_size;
+	struct dev_policy *pols;
 };
 
 typedef enum mdadm_status {
@@ -1734,8 +1735,8 @@ extern int assemble_container_content(struct supertype *st, int mdfd,
 #define	INCR_ALREADY	4
 #define	INCR_YES	8
 
-extern bool devid_matches_criteria(dev_t devid, struct spare_criteria *sc);
-extern bool disk_fd_matches_criteria(int disk_fd, struct spare_criteria *sc);
+extern bool devid_matches_criteria(struct supertype *st, dev_t devid, struct spare_criteria *sc);
+extern bool disk_fd_matches_criteria(struct supertype *st, int disk_fd, struct spare_criteria *sc);
 extern struct mdinfo *container_choose_spares(struct supertype *st,
 					      struct spare_criteria *criteria,
 					      struct domainlist *domlist,
diff --git a/util.c b/util.c
index 041e78cf5426..05ad33436dfe 100644
--- a/util.c
+++ b/util.c
@@ -2056,12 +2056,13 @@ unsigned int __invalid_size_argument_for_IOC = 0;
 
 /**
  * disk_fd_matches_criteria() - check if device matches spare criteria.
+ * @st: supertype, not NULL.
  * @disk_fd: file descriptor of the disk.
  * @sc: criteria to test.
  *
  * Return: true if disk matches criteria, false otherwise.
  */
-bool disk_fd_matches_criteria(int disk_fd, struct spare_criteria *sc)
+bool disk_fd_matches_criteria(struct supertype *st, int disk_fd, struct spare_criteria *sc)
 {
 	unsigned int dev_sector_size = 0;
 	unsigned long long dev_size = 0;
@@ -2076,17 +2077,21 @@ bool disk_fd_matches_criteria(int disk_fd, struct spare_criteria *sc)
 	    sc->sector_size != dev_sector_size)
 		return false;
 
+	if (drive_test_and_add_policies(st, &sc->pols, disk_fd, 0))
+		return false;
+
 	return true;
 }
 
 /**
  * devid_matches_criteria() - check if device referenced by devid matches spare criteria.
+ * @st: supertype, not NULL.
  * @devid: devid of the device to check.
  * @sc: criteria to test.
  *
  * Return: true if disk matches criteria, false otherwise.
  */
-bool devid_matches_criteria(dev_t devid, struct spare_criteria *sc)
+bool devid_matches_criteria(struct supertype *st, dev_t devid, struct spare_criteria *sc)
 {
 	char buf[NAME_MAX];
 	bool ret;
@@ -2102,7 +2107,7 @@ bool devid_matches_criteria(dev_t devid, struct spare_criteria *sc)
 		return false;
 
 	/* Error code inherited */
-	ret = disk_fd_matches_criteria(fd, sc);
+	ret = disk_fd_matches_criteria(st, fd, sc);
 
 	close(fd);
 	return ret;
@@ -2137,7 +2142,7 @@ struct mdinfo *container_choose_spares(struct supertype *st,
 		if (d->disk.state == 0) {
 			dev_t dev = makedev(d->disk.major,d->disk.minor);
 
-			found = devid_matches_criteria(dev, criteria);
+			found = devid_matches_criteria(st, dev, criteria);
 
 			/* check if domain matches */
 			if (found && domlist) {
-- 
2.35.3