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| author |   Chris Mason <clm@fb.com> | 2015-10-21 18:21:40 -0700 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-10-21 18:21:40 -0700 |
| commit | a0d58e48db58801a0e764e9b9c87e1782d390fcb (patch) | |
| tree | f413f86da859552a29df58f40d450372977b5673 /fs/btrfs/disk-io.c | |
| parent | Merge branch 'fix/waitqueue-barriers' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4 (diff) | |
| parent | btrfs: reada: Fix returned errno code (diff) | |
| download | linux-dev-a0d58e48db58801a0e764e9b9c87e1782d390fcb.tar.xz linux-dev-a0d58e48db58801a0e764e9b9c87e1782d390fcb.zip | |
Merge branch 'cleanups/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 35 |
1 files changed, 22 insertions, 13 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index a42c1f575ef7..bcbb596d9695 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3476,22 +3476,31 @@ static int barrier_all_devices(struct btrfs_fs_info *info) 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; + int raid_type; + int min_tolerated = INT_MAX; - if (flags & (BTRFS_BLOCK_GROUP_RAID1 | - BTRFS_BLOCK_GROUP_RAID5 | - BTRFS_BLOCK_GROUP_RAID10)) - return 1; + if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0 || + (flags & BTRFS_AVAIL_ALLOC_BIT_SINGLE)) + min_tolerated = min(min_tolerated, + btrfs_raid_array[BTRFS_RAID_SINGLE]. + tolerated_failures); - if (flags & BTRFS_BLOCK_GROUP_RAID6) - return 2; + for (raid_type = 0; raid_type < BTRFS_NR_RAID_TYPES; raid_type++) { + if (raid_type == BTRFS_RAID_SINGLE) + continue; + if (!(flags & btrfs_raid_group[raid_type])) + continue; + min_tolerated = min(min_tolerated, + btrfs_raid_array[raid_type]. + tolerated_failures); + } - pr_warn("BTRFS: unknown raid type: %llu\n", flags); - return 0; + if (min_tolerated == INT_MAX) { + pr_warn("BTRFS: unknown raid flag: %llu\n", flags); + min_tolerated = 0; + } + + return min_tolerated; } int btrfs_calc_num_tolerated_disk_barrier_failures( |