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btrfs: use appropriate define for the fsid 

Though BTRFS_FSID_SIZE and BTRFS_UUID_SIZE are of the same size, we
should use the matching constant for the fsid buffer.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2017-07-29 17:50:09 +08:00 committed by David Sterba
parent 42e9cc46fb
commit 44880fdc91
4 changed files with 13 additions and 13 deletions
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2
fs/btrfs/check-integrity.c
View File

@ -1732,7 +1732,7 @@ static int btrfsic_test_for_metadata(struct btrfsic_state *state,
num_pages = state->metablock_size >> PAGE_SHIFT;
h = (struct btrfs_header *)datav[0];
if (memcmp(h->fsid, fs_info->fsid, BTRFS_UUID_SIZE))
if (memcmp(h->fsid, fs_info->fsid, BTRFS_FSID_SIZE))
return 1;
for (i = 0; i < num_pages; i++) {

6
fs/btrfs/disk-io.c
View File

@ -529,7 +529,7 @@ static int check_tree_block_fsid(struct btrfs_fs_info *fs_info,
struct extent_buffer *eb)
{
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
u8 fsid[BTRFS_UUID_SIZE];
u8 fsid[BTRFS_FSID_SIZE];
int ret = 1;
read_extent_buffer(eb, fsid, btrfs_header_fsid(), BTRFS_FSID_SIZE);
@ -3681,7 +3681,7 @@ int write_all_supers(struct btrfs_fs_info *fs_info, int max_mirrors)
btrfs_set_stack_device_io_width(dev_item, dev->io_width);
btrfs_set_stack_device_sector_size(dev_item, dev->sector_size);
memcpy(dev_item->uuid, dev->uuid, BTRFS_UUID_SIZE);
memcpy(dev_item->fsid, dev->fs_devices->fsid, BTRFS_UUID_SIZE);
memcpy(dev_item->fsid, dev->fs_devices->fsid, BTRFS_FSID_SIZE);
flags = btrfs_super_flags(sb);
btrfs_set_super_flags(sb, flags | BTRFS_HEADER_FLAG_WRITTEN);
@ -4120,7 +4120,7 @@ static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info)
ret = -EINVAL;
}
if (memcmp(fs_info->fsid, sb->dev_item.fsid, BTRFS_UUID_SIZE) != 0) {
if (memcmp(fs_info->fsid, sb->dev_item.fsid, BTRFS_FSID_SIZE) != 0) {
btrfs_err(fs_info,
"dev_item UUID does not match fsid: %pU != %pU",
fs_info->fsid, sb->dev_item.fsid);

2
fs/btrfs/scrub.c
View File

@ -1769,7 +1769,7 @@ static inline int scrub_check_fsid(u8 fsid[],
struct btrfs_fs_devices *fs_devices = spage->dev->fs_devices;
int ret;
ret = memcmp(fsid, fs_devices->fsid, BTRFS_UUID_SIZE);
ret = memcmp(fsid, fs_devices->fsid, BTRFS_FSID_SIZE);
return !ret;
}

16
fs/btrfs/volumes.c
View File

@ -1719,7 +1719,7 @@ static int btrfs_add_device(struct btrfs_trans_handle *trans,
ptr = btrfs_device_uuid(dev_item);
write_extent_buffer(leaf, device->uuid, ptr, BTRFS_UUID_SIZE);
ptr = btrfs_device_fsid(dev_item);
write_extent_buffer(leaf, fs_info->fsid, ptr, BTRFS_UUID_SIZE);
write_extent_buffer(leaf, fs_info->fsid, ptr, BTRFS_FSID_SIZE);
btrfs_mark_buffer_dirty(leaf);
ret = 0;
@ -2249,7 +2249,7 @@ static int btrfs_finish_sprout(struct btrfs_trans_handle *trans,
struct btrfs_dev_item *dev_item;
struct btrfs_device *device;
struct btrfs_key key;
u8 fs_uuid[BTRFS_UUID_SIZE];
u8 fs_uuid[BTRFS_FSID_SIZE];
u8 dev_uuid[BTRFS_UUID_SIZE];
u64 devid;
int ret;
@ -2292,7 +2292,7 @@ next_slot:
read_extent_buffer(leaf, dev_uuid, btrfs_device_uuid(dev_item),
BTRFS_UUID_SIZE);
read_extent_buffer(leaf, fs_uuid, btrfs_device_fsid(dev_item),
BTRFS_UUID_SIZE);
BTRFS_FSID_SIZE);
device = btrfs_find_device(fs_info, devid, dev_uuid, fs_uuid);
BUG_ON(!device); /* Logic error */
@ -6243,7 +6243,7 @@ struct btrfs_device *btrfs_find_device(struct btrfs_fs_info *fs_info, u64 devid,
cur_devices = fs_info->fs_devices;
while (cur_devices) {
if (!fsid ||
!memcmp(cur_devices->fsid, fsid, BTRFS_UUID_SIZE)) {
!memcmp(cur_devices->fsid, fsid, BTRFS_FSID_SIZE)) {
device = find_device(cur_devices, devid, uuid);
if (device)
return device;
@ -6518,7 +6518,7 @@ static struct btrfs_fs_devices *open_seed_devices(struct btrfs_fs_info *fs_info,
fs_devices = fs_info->fs_devices->seed;
while (fs_devices) {
if (!memcmp(fs_devices->fsid, fsid, BTRFS_UUID_SIZE))
if (!memcmp(fs_devices->fsid, fsid, BTRFS_FSID_SIZE))
return fs_devices;
fs_devices = fs_devices->seed;
@ -6571,16 +6571,16 @@ static int read_one_dev(struct btrfs_fs_info *fs_info,
struct btrfs_device *device;
u64 devid;
int ret;
u8 fs_uuid[BTRFS_UUID_SIZE];
u8 fs_uuid[BTRFS_FSID_SIZE];
u8 dev_uuid[BTRFS_UUID_SIZE];
devid = btrfs_device_id(leaf, dev_item);
read_extent_buffer(leaf, dev_uuid, btrfs_device_uuid(dev_item),
BTRFS_UUID_SIZE);
read_extent_buffer(leaf, fs_uuid, btrfs_device_fsid(dev_item),
BTRFS_UUID_SIZE);
BTRFS_FSID_SIZE);
if (memcmp(fs_uuid, fs_info->fsid, BTRFS_UUID_SIZE)) {
if (memcmp(fs_uuid, fs_info->fsid, BTRFS_FSID_SIZE)) {
fs_devices = open_seed_devices(fs_info, fs_uuid);
if (IS_ERR(fs_devices))
return PTR_ERR(fs_devices);