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authorAnand Jain <anand.jain@oracle.com>2017-10-12 16:43:00 +0800
committerDavid Sterba <dsterba@suse.com>2017-10-30 12:28:01 +0100
commitde48373454aceaf65877f9953eaf942505e83cc5 (patch)
tree4abd47b0d57113914b06df6ff173132725818121 /fs/btrfs
parent79f015f216539dfdf0d3ef0b3bbb9dc7754364cd (diff)
downloadlinux-de48373454aceaf65877f9953eaf942505e83cc5.tar.bz2
btrfs: use need_full_stripe() in __btrfs_map_block()
A cleanup patch, use need_full_stripe() to replace the open code. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: Qu Wenruo <quwenruo.btrfs@gmx.com> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/volumes.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 56ed01f8d4df..6df39b5fda89 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5691,10 +5691,10 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
if (map->type & BTRFS_BLOCK_GROUP_RAID0) {
stripe_nr = div_u64_rem(stripe_nr, map->num_stripes,
&stripe_index);
- if (op != BTRFS_MAP_WRITE && op != BTRFS_MAP_GET_READ_MIRRORS)
+ if (!need_full_stripe(op))
mirror_num = 1;
} else if (map->type & BTRFS_BLOCK_GROUP_RAID1) {
- if (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_GET_READ_MIRRORS)
+ if (need_full_stripe(op))
num_stripes = map->num_stripes;
else if (mirror_num)
stripe_index = mirror_num - 1;
@@ -5707,7 +5707,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
}
} else if (map->type & BTRFS_BLOCK_GROUP_DUP) {
- if (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_GET_READ_MIRRORS) {
+ if (need_full_stripe(op)) {
num_stripes = map->num_stripes;
} else if (mirror_num) {
stripe_index = mirror_num - 1;
@@ -5721,7 +5721,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
stripe_nr = div_u64_rem(stripe_nr, factor, &stripe_index);
stripe_index *= map->sub_stripes;
- if (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_GET_READ_MIRRORS)
+ if (need_full_stripe(op))
num_stripes = map->sub_stripes;
else if (mirror_num)
stripe_index += mirror_num - 1;
@@ -5736,9 +5736,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
}
} else if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
- if (need_raid_map &&
- (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_GET_READ_MIRRORS ||
- mirror_num > 1)) {
+ if (need_raid_map && (need_full_stripe(op) || mirror_num > 1)) {
/* push stripe_nr back to the start of the full stripe */
stripe_nr = div64_u64(raid56_full_stripe_start,
stripe_len * nr_data_stripes(map));
@@ -5765,9 +5763,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
/* We distribute the parity blocks across stripes */
div_u64_rem(stripe_nr + stripe_index, map->num_stripes,
&stripe_index);
- if ((op != BTRFS_MAP_WRITE &&
- op != BTRFS_MAP_GET_READ_MIRRORS) &&
- mirror_num <= 1)
+ if (!need_full_stripe(op) && mirror_num <= 1)
mirror_num = 1;
}
} else {