[PATCH 10/31] Add support to skip slot configuration

When managemon is signaled by monitor (using reshape_delta_disks variable), it adds new disks to md configuration.
To allow md to set slot numbers, flag SYSFS_ADD_DISK_DO_NOT_SET_SLOT was introduced to skip slot setting in sysfs_add_disk() function.

Signed-off-by: Adam Kwolek
---

mdadm/mdadm/mdadm.h | 1 +
mdadm/mdadm/sysfs.c | 4 +++-
2 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/mdadm/mdadm/mdadm.h b/mdadm/mdadm/mdadm.h index 3a8115a..d967057 100644
--- a/mdadm/mdadm/mdadm.h
+++ b/mdadm/mdadm/mdadm.h
@@ -443,6 +443,7 @@ extern int sysfs_get_str(struct mdinfo *sra, struct mdinfo *dev,
char *name, char *val, int size);
extern int sysfs_set_safemode(struct mdinfo *sra, unsigned long ms); extern int sysfs_set_array(struct mdinfo *info, int vers);
+#define SYSFS_ADD_DISK_DO_NOT_SET_SLOT (-INT_MAX)
extern int sysfs_add_disk(struct mdinfo *sra, struct mdinfo *sd, int resume); extern int sysfs_disk_to_scsi_id(int fd, __u32 *id); extern int sysfs_unique_holder(int devnum, long rdev); diff --git a/mdadm/mdadm/sysfs.c b/mdadm/mdadm/sysfs.c index 06e8c93..54fcae0 100644
--- a/mdadm/mdadm/sysfs.c
+++ b/mdadm/mdadm/sysfs.c
@@ -26,6 +26,7 @@
#include "mdadm.h"
#include
#include
+#include

int load_sys(char *path, char *buf)
{
@@ -614,7 +615,8 @@ int sysfs_add_disk(struct mdinfo *sra, struct mdinfo *sd, int resume)
* yet, so just ignore status for now.
*/
sysfs_set_str(sra, sd, "state", "insync");
- rv |= sysfs_set_num(sra, sd, "slot", sd->disk.raid_disk);
+ if (sd->disk.raid_disk != SYSFS_ADD_DISK_DO_NOT_SET_SLOT)
+ rv |= sysfs_set_num(sra, sd, "slot", sd->disk.raid_disk);
if (resume)
sysfs_set_num(sra, sd, "recovery_start", sd->recovery_start);
}

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