diff options
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 5705335c80c8b..cf59d8f14a056 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3747,6 +3747,20 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device } /* + * For devices supporting discard turn on discard=async automatically, + * unless it's already set or disabled. This could be turned off by + * nodiscard for the same mount. + */ + if (!(btrfs_test_opt(fs_info, DISCARD_SYNC) || + btrfs_test_opt(fs_info, DISCARD_ASYNC) || + btrfs_test_opt(fs_info, NODISCARD)) && + fs_info->fs_devices->discardable) { + btrfs_set_and_info(fs_info, DISCARD_ASYNC, + "auto enabling async discard"); + btrfs_clear_opt(fs_info->mount_opt, NODISCARD); + } + + /* * Mount does not set all options immediately, we can do it now and do * not have to wait for transaction commit */ |