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authorNikolay Borisov <nborisov@suse.com>2019-10-15 18:42:23 +0300
committerDavid Sterba <dsterba@suse.com>2019-11-18 19:51:47 +0300
commit4ac039ad75df3f5f5f5b2b7439f094ad5bd9dbbe (patch)
tree0512a3e5c93ab033396b9427a29bdad34fbe2ee1 /fs/btrfs/disk-io.c
parent260eb11bd42b4b5bcd671a1f8cb7d7b9a3e36b8d (diff)
downloadlinux-4ac039ad75df3f5f5f5b2b7439f094ad5bd9dbbe.tar.xz
btrfs: Rename find_oldest_super_backup to init_backup_root_slot
The old name name was an awful misnomer because it didn't really find the oldest super backup per-se but rather its slot. For example if we have: slot0: gen - 2 slot1: gen - 1 slot2: gen slot3: empty init_backup_root_slot will return slot3 and not slot0. The new name is more appropriate since the function doesn't care whether there is a valid backup in the returned slot or not. Signed-off-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
-rw-r--r--fs/btrfs/disk-io.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 99ba3278628c..6c44d1781f21 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1815,13 +1815,11 @@ static int find_newest_super_backup(struct btrfs_fs_info *info)
return -EINVAL;
}
-
/*
- * find the oldest backup so we know where to store new entries
- * in the backup array. This will set the backup_root_index
- * field in the fs_info struct
+ * Initialize backup_root_index with the next available slot, where subsequent
+ * transaction commit will store the backup root
*/
-static void find_oldest_super_backup(struct btrfs_fs_info *info)
+static void init_backup_root_slot(struct btrfs_fs_info *info)
{
int newest_index;
@@ -2935,7 +2933,7 @@ int __cold open_ctree(struct super_block *sb,
* run through our array of backup supers and setup
* our ring pointer to the oldest one
*/
- find_oldest_super_backup(fs_info);
+ init_backup_root_slot(fs_info);
/*
* In the long term, we'll store the compression type in the super