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Diffstat (limited to 'fs/btrfs/disk-io.c')
-rw-r--r--fs/btrfs/disk-io.c78
1 files changed, 36 insertions, 42 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 9ebd34f1c677..295795aebe0b 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3443,6 +3443,26 @@ static int barrier_all_devices(struct btrfs_fs_info *info)
return 0;
}
+int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags)
+{
+ if ((flags & (BTRFS_BLOCK_GROUP_DUP |
+ BTRFS_BLOCK_GROUP_RAID0 |
+ BTRFS_AVAIL_ALLOC_BIT_SINGLE)) ||
+ ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0))
+ return 0;
+
+ if (flags & (BTRFS_BLOCK_GROUP_RAID1 |
+ BTRFS_BLOCK_GROUP_RAID5 |
+ BTRFS_BLOCK_GROUP_RAID10))
+ return 1;
+
+ if (flags & BTRFS_BLOCK_GROUP_RAID6)
+ return 2;
+
+ pr_warn("BTRFS: unknown raid type: %llu\n", flags);
+ return 0;
+}
+
int btrfs_calc_num_tolerated_disk_barrier_failures(
struct btrfs_fs_info *fs_info)
{
@@ -3452,13 +3472,12 @@ int btrfs_calc_num_tolerated_disk_barrier_failures(
BTRFS_BLOCK_GROUP_SYSTEM,
BTRFS_BLOCK_GROUP_METADATA,
BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA};
- int num_types = 4;
int i;
int c;
int num_tolerated_disk_barrier_failures =
(int)fs_info->fs_devices->num_devices;
- for (i = 0; i < num_types; i++) {
+ for (i = 0; i < ARRAY_SIZE(types); i++) {
struct btrfs_space_info *tmp;
sinfo = NULL;
@@ -3476,44 +3495,21 @@ int btrfs_calc_num_tolerated_disk_barrier_failures(
down_read(&sinfo->groups_sem);
for (c = 0; c < BTRFS_NR_RAID_TYPES; c++) {
- if (!list_empty(&sinfo->block_groups[c])) {
- u64 flags;
-
- btrfs_get_block_group_info(
- &sinfo->block_groups[c], &space);
- if (space.total_bytes == 0 ||
- space.used_bytes == 0)
- continue;
- flags = space.flags;
- /*
- * return
- * 0: if dup, single or RAID0 is configured for
- * any of metadata, system or data, else
- * 1: if RAID5 is configured, or if RAID1 or
- * RAID10 is configured and only two mirrors
- * are used, else
- * 2: if RAID6 is configured, else
- * num_mirrors - 1: if RAID1 or RAID10 is
- * configured and more than
- * 2 mirrors are used.
- */
- if (num_tolerated_disk_barrier_failures > 0 &&
- ((flags & (BTRFS_BLOCK_GROUP_DUP |
- BTRFS_BLOCK_GROUP_RAID0)) ||
- ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK)
- == 0)))
- num_tolerated_disk_barrier_failures = 0;
- else if (num_tolerated_disk_barrier_failures > 1) {
- if (flags & (BTRFS_BLOCK_GROUP_RAID1 |
- BTRFS_BLOCK_GROUP_RAID5 |
- BTRFS_BLOCK_GROUP_RAID10)) {
- num_tolerated_disk_barrier_failures = 1;
- } else if (flags &
- BTRFS_BLOCK_GROUP_RAID6) {
- num_tolerated_disk_barrier_failures = 2;
- }
- }
- }
+ u64 flags;
+
+ if (list_empty(&sinfo->block_groups[c]))
+ continue;
+
+ btrfs_get_block_group_info(&sinfo->block_groups[c],
+ &space);
+ if (space.total_bytes == 0 || space.used_bytes == 0)
+ continue;
+ flags = space.flags;
+
+ num_tolerated_disk_barrier_failures = min(
+ num_tolerated_disk_barrier_failures,
+ btrfs_get_num_tolerated_disk_barrier_failures(
+ flags));
}
up_read(&sinfo->groups_sem);
}
@@ -3769,9 +3765,7 @@ void close_ctree(struct btrfs_root *root)
* block groups queued for removal, the deletion will be
* skipped when we quit the cleaner thread.
*/
- mutex_lock(&root->fs_info->cleaner_mutex);
btrfs_delete_unused_bgs(root->fs_info);
- mutex_unlock(&root->fs_info->cleaner_mutex);
ret = btrfs_commit_super(root);
if (ret)