diff mbox series

[08/10] btrfs-progs: track total_devs in fs devices

Message ID b61446563f85b3ba7666ca85f8e9b5ac6f6c70f7.1690985783.git.anand.jain@oracle.com (mailing list archive)
State New, archived
Headers show
Series fixes and preparatory related to metadata_uuid | expand

Commit Message

Anand Jain Aug. 2, 2023, 11:29 p.m. UTC 
Similar to the kernel, introduce the btrfs_fs_devices::total_devs
attribute to know the overall count of devices that are expected
to be present per filesystem.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
v2: Maintains parity with the kernel.

 kernel-shared/volumes.c | 4 +++-
 kernel-shared/volumes.h | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/kernel-shared/volumes.c b/kernel-shared/volumes.c
index 88d6c51e3e7e..1954bc230462 100644
--- a/kernel-shared/volumes.c
+++ b/kernel-shared/volumes.c
@@ -367,7 +367,8 @@  static int device_list_add(const char *path,
 			       BTRFS_FSID_SIZE);
 
 		fs_devices->latest_devid = devid;
-		fs_devices->latest_trans = found_transid;
+		/* Below we would set this to found_transid */
+		fs_devices->latest_trans = 0;
 		fs_devices->lowest_devid = (u64)-1;
 		fs_devices->chunk_alloc_policy = BTRFS_CHUNK_ALLOC_REGULAR;
 		device = NULL;
@@ -438,6 +439,7 @@  static int device_list_add(const char *path,
 	if (found_transid > fs_devices->latest_trans) {
 		fs_devices->latest_devid = devid;
 		fs_devices->latest_trans = found_transid;
+		fs_devices->total_devices = device->total_devs;
 	}
 	if (fs_devices->lowest_devid > devid) {
 		fs_devices->lowest_devid = devid;
diff --git a/kernel-shared/volumes.h b/kernel-shared/volumes.h
index fe8802a9fb38..088cb62c3c32 100644
--- a/kernel-shared/volumes.h
+++ b/kernel-shared/volumes.h
@@ -92,6 +92,7 @@  struct btrfs_fs_devices {
 	u64 missing_devices;
 	u64 total_rw_bytes;
 
+	u64 total_devices;
 	int latest_bdev;
 	int lowest_bdev;
 	struct list_head devices;