diff options
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 4ff26c00eebe..4cb9d35d71f8 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -828,6 +828,29 @@ void btrfs_set_free_space_cache_settings(struct btrfs_fs_info *fs_info) btrfs_set_opt(fs_info->mount_opt, SPACE_CACHE); } +static void set_device_specific_options(struct btrfs_fs_info *fs_info) +{ + if (!btrfs_test_opt(fs_info, NOSSD) && + !fs_info->fs_devices->rotating) + btrfs_set_opt(fs_info->mount_opt, SSD); + + /* + * 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. + * + * The zoned mode piggy backs on the discard functionality for + * resetting a zone. There is no reason to delay the zone reset as it is + * fast enough. So, do not enable async discard for zoned mode. + */ + 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_is_zoned(fs_info)) + btrfs_set_opt(fs_info->mount_opt, DISCARD_ASYNC); +} + static int parse_rescue_options(struct btrfs_fs_info *info, const char *options) { char *opts; @@ -2876,6 +2899,8 @@ static int btrfs_get_tree_super(struct fs_context *fc) goto error; } + set_device_specific_options(fs_info); + if (sb->s_root) { btrfs_close_devices(fs_devices); if ((fc->sb_flags ^ sb->s_flags) & SB_RDONLY) |