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Btrfs: Introduce BTRFS_BLOCK_GROUP_RAID56_MASK to check raid56 simply 

So we can check raid56 with:
 (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK)
instead of long:
 (map->type & (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6))

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Zhao Lei 2015-01-20 15:11:44 +08:00 committed by Chris Mason
parent 10f1190016
commit ffe2d2034b
4 changed files with 19 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
fs/btrfs/ctree.h
View File

@ -1020,6 +1020,9 @@ enum btrfs_raid_types {
BTRFS_BLOCK_GROUP_RAID6 | \
BTRFS_BLOCK_GROUP_DUP | \
BTRFS_BLOCK_GROUP_RAID10)
#define BTRFS_BLOCK_GROUP_RAID56_MASK (BTRFS_BLOCK_GROUP_RAID5 | \
BTRFS_BLOCK_GROUP_RAID6)
/*
* We need a bit for restriper to be able to tell when chunks of type
* SINGLE are available. This "extended" profile format is used in

3
fs/btrfs/inode.c
View File

@ -7812,8 +7812,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
}
/* async crcs make it difficult to collect full stripe writes. */
if (btrfs_get_alloc_profile(root, 1) &
(BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6))
if (btrfs_get_alloc_profile(root, 1) & BTRFS_BLOCK_GROUP_RAID56_MASK)
async_submit = 0;
else
async_submit = 1;

17
fs/btrfs/scrub.c
View File

@ -1273,7 +1273,7 @@ static inline void scrub_stripe_index_and_offset(u64 logical, u64 map_type,
{
int i;
if (map_type & (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)) {
if (map_type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
/* RAID5/6 */
for (i = 0; i < nstripes; i++) {
if (raid_map[i] == RAID6_Q_STRIPE ||
@ -1420,8 +1420,7 @@ static void scrub_bio_wait_endio(struct bio *bio, int error)
static inline int scrub_is_page_on_raid56(struct scrub_page *page)
{
return page->recover &&
(page->recover->bbio->map_type & (BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6));
(page->recover->bbio->map_type & BTRFS_BLOCK_GROUP_RAID56_MASK);
}
static int scrub_submit_raid56_bio_wait(struct btrfs_fs_info *fs_info,
@ -2994,8 +2993,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
} else if (map->type & BTRFS_BLOCK_GROUP_DUP) {
increment = map->stripe_len;
mirror_num = num % map->num_stripes + 1;
} else if (map->type & (BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6)) {
} else if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
get_raid56_logic_offset(physical, num, map, &offset, NULL);
increment = map->stripe_len * nr_data_stripes(map);
mirror_num = 1;
@ -3029,8 +3027,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
*/
logical = base + offset;
physical_end = physical + nstripes * map->stripe_len;
if (map->type & (BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6)) {
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
get_raid56_logic_offset(physical_end, num,
map, &logic_end, NULL);
logic_end += base;
@ -3076,8 +3073,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
ret = 0;
while (physical < physical_end) {
/* for raid56, we skip parity stripe */
if (map->type & (BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6)) {
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
ret = get_raid56_logic_offset(physical, num,
map, &logical, &stripe_logical);
logical += base;
@ -3235,8 +3231,7 @@ again:
scrub_free_csums(sctx);
if (extent_logical + extent_len <
key.objectid + bytes) {
if (map->type & (BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6)) {
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
/*
* loop until we find next data stripe
* or we have finished all stripes.

24
fs/btrfs/volumes.c
View File

@ -4196,7 +4196,7 @@ static u32 find_raid56_stripe_len(u32 data_devices, u32 dev_stripe_target)
static void check_raid56_incompat_flag(struct btrfs_fs_info *info, u64 type)
{
if (!(type & (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)))
if (!(type & BTRFS_BLOCK_GROUP_RAID56_MASK))
return;
btrfs_set_fs_incompat(info, RAID56);
@ -4803,10 +4803,8 @@ unsigned long btrfs_full_stripe_len(struct btrfs_root *root,
BUG_ON(em->start > logical || em->start + em->len < logical);
map = (struct map_lookup *)em->bdev;
if (map->type & (BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6)) {
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK)
len = map->stripe_len * nr_data_stripes(map);
}
free_extent_map(em);
return len;
}
@ -4826,8 +4824,7 @@ int btrfs_is_parity_mirror(struct btrfs_mapping_tree *map_tree,
BUG_ON(em->start > logical || em->start + em->len < logical);
map = (struct map_lookup *)em->bdev;
if (map->type & (BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6))
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK)
ret = 1;
free_extent_map(em);
return ret;
@ -4998,7 +4995,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
stripe_offset = offset - stripe_offset;
/* if we're here for raid56, we need to know the stripe aligned start */
if (map->type & (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)) {
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
unsigned long full_stripe_len = stripe_len * nr_data_stripes(map);
raid56_full_stripe_start = offset;
@ -5011,8 +5008,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
if (rw & REQ_DISCARD) {
/* we don't discard raid56 yet */
if (map->type &
(BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)) {
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
ret = -EOPNOTSUPP;
goto out;
}
@ -5022,7 +5018,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
/* For writes to RAID[56], allow a full stripeset across all disks.
For other RAID types and for RAID[56] reads, just allow a single
stripe (on a single disk). */
if (map->type & (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6) &&
if ((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) &&
(rw & REQ_WRITE)) {
max_len = stripe_len * nr_data_stripes(map) -
(offset - raid56_full_stripe_start);
@ -5188,8 +5184,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
mirror_num = stripe_index - old_stripe_index + 1;
}
} else if (map->type & (BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6)) {
} else if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
if (need_raid_map &&
((rw & (REQ_WRITE | REQ_GET_READ_MIRRORS)) ||
mirror_num > 1)) {
@ -5253,7 +5248,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
bbio->tgtdev_map = (int *)(bbio->stripes + num_alloc_stripes);
/* build raid_map */
if (map->type & (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6) &&
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK &&
need_raid_map && ((rw & (REQ_WRITE | REQ_GET_READ_MIRRORS)) ||
mirror_num > 1)) {
u64 tmp;
@ -5534,8 +5529,7 @@ int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
do_div(length, map->num_stripes / map->sub_stripes);
else if (map->type & BTRFS_BLOCK_GROUP_RAID0)
do_div(length, map->num_stripes);
else if (map->type & (BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6)) {
else if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
do_div(length, nr_data_stripes(map));
rmap_len = map->stripe_len * nr_data_stripes(map);
}