diff options
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 0645ec428b4f..78de9d5d80c6 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -42,6 +42,7 @@ #include "dev-replace.h" #include "free-space-cache.h" #include "backref.h" +#include "space-info.h" #include "tests/btrfs-tests.h" #include "qgroup.h" @@ -1553,6 +1554,8 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type, } else { snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev); btrfs_sb(s)->bdev_holder = fs_type; + if (!strstr(crc32c_impl(), "generic")) + set_bit(BTRFS_FS_CSUM_IMPL_FAST, &fs_info->flags); error = btrfs_fill_super(s, fs_devices, data); } if (!error) @@ -1601,14 +1604,10 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, { struct vfsmount *mnt_root; struct dentry *root; - fmode_t mode = FMODE_READ; char *subvol_name = NULL; u64 subvol_objectid = 0; int error = 0; - if (!(flags & SB_RDONLY)) - mode |= FMODE_WRITE; - error = btrfs_parse_subvol_options(data, &subvol_name, &subvol_objectid); if (error) { @@ -1904,8 +1903,9 @@ static inline int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info, u64 type; u64 avail_space; u64 min_stripe_size; - int min_stripes = 1, num_stripes = 1; + int min_stripes, num_stripes = 1; int i = 0, nr_devices; + const struct btrfs_raid_attr *rattr; /* * We aren't under the device list lock, so this is racy-ish, but good @@ -1929,21 +1929,18 @@ static inline int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info, /* calc min stripe number for data space allocation */ type = btrfs_data_alloc_profile(fs_info); - if (type & BTRFS_BLOCK_GROUP_RAID0) { - min_stripes = 2; + rattr = &btrfs_raid_array[btrfs_bg_flags_to_raid_index(type)]; + min_stripes = rattr->devs_min; + + if (type & BTRFS_BLOCK_GROUP_RAID0) num_stripes = nr_devices; - } else if (type & BTRFS_BLOCK_GROUP_RAID1) { - min_stripes = 2; + else if (type & BTRFS_BLOCK_GROUP_RAID1) num_stripes = 2; - } else if (type & BTRFS_BLOCK_GROUP_RAID10) { - min_stripes = 4; + else if (type & BTRFS_BLOCK_GROUP_RAID10) num_stripes = 4; - } - if (type & BTRFS_BLOCK_GROUP_DUP) - min_stripe_size = 2 * BTRFS_STRIPE_LEN; - else - min_stripe_size = BTRFS_STRIPE_LEN; + /* Adjust for more than 1 stripe per device */ + min_stripe_size = rattr->dev_stripes * BTRFS_STRIPE_LEN; rcu_read_lock(); list_for_each_entry_rcu(device, &fs_devices->devices, dev_list) { @@ -2466,3 +2463,4 @@ late_initcall(init_btrfs_fs); module_exit(exit_btrfs_fs) MODULE_LICENSE("GPL"); +MODULE_SOFTDEP("pre: crc32c"); |