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Btrfs: use helper to get used bytes of space_info 

This uses a helper instead of open code around used byte of space_info
everywhere.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo 2017-02-13 15:42:21 -08:00 committed by David Sterba
parent 0c9b36e0d7
commit 4136135b08
1 changed files with 19 additions and 22 deletions
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41
fs/btrfs/extent-tree.c
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@ -4121,6 +4121,15 @@ u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data)
return ret;
}
static u64 btrfs_space_info_used(struct btrfs_space_info *s_info,
bool may_use_included)
{
ASSERT(s_info);
return s_info->bytes_used + s_info->bytes_reserved +
s_info->bytes_pinned + s_info->bytes_readonly +
(may_use_included ? s_info->bytes_may_use : 0);
}
int btrfs_alloc_data_chunk_ondemand(struct inode *inode, u64 bytes)
{
struct btrfs_space_info *data_sinfo;
@ -4146,9 +4155,7 @@ int btrfs_alloc_data_chunk_ondemand(struct inode *inode, u64 bytes)
again:
/* make sure we have enough space to handle the data first */
spin_lock(&data_sinfo->lock);
used = data_sinfo->bytes_used + data_sinfo->bytes_reserved +
data_sinfo->bytes_pinned + data_sinfo->bytes_readonly +
data_sinfo->bytes_may_use;
used = btrfs_space_info_used(data_sinfo, true);
if (used + bytes > data_sinfo->total_bytes) {
struct btrfs_trans_handle *trans;
@ -4423,9 +4430,7 @@ void check_system_chunk(struct btrfs_trans_handle *trans,
info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_SYSTEM);
spin_lock(&info->lock);
left = info->total_bytes - info->bytes_used - info->bytes_pinned -
info->bytes_reserved - info->bytes_readonly -
info->bytes_may_use;
left = info->total_bytes - btrfs_space_info_used(info, true);
spin_unlock(&info->lock);
num_devs = get_profile_num_devs(fs_info, type);
@ -4608,8 +4613,7 @@ static int can_overcommit(struct btrfs_root *root,
return 0;
profile = btrfs_get_alloc_profile(root, 0);
used = space_info->bytes_used + space_info->bytes_reserved +
space_info->bytes_pinned + space_info->bytes_readonly;
used = btrfs_space_info_used(space_info, false);
/*
* We only want to allow over committing if we have lots of actual space
@ -5137,9 +5141,7 @@ static int __reserve_metadata_bytes(struct btrfs_root *root,
spin_lock(&space_info->lock);
ret = -ENOSPC;
used = space_info->bytes_used + space_info->bytes_reserved +
space_info->bytes_pinned + space_info->bytes_readonly +
space_info->bytes_may_use;
used = btrfs_space_info_used(space_info, true);
/*
* If we have enough space then hooray, make our reservation and carry
@ -5632,9 +5634,7 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info)
block_rsv->size = min_t(u64, num_bytes, SZ_512M);
if (block_rsv->reserved < block_rsv->size) {
num_bytes = sinfo->bytes_used + sinfo->bytes_pinned +
sinfo->bytes_reserved + sinfo->bytes_readonly +
sinfo->bytes_may_use;
num_bytes = btrfs_space_info_used(sinfo, true);
if (sinfo->total_bytes > num_bytes) {
num_bytes = sinfo->total_bytes - num_bytes;
num_bytes = min(num_bytes,
@ -7908,9 +7908,8 @@ static void dump_space_info(struct btrfs_fs_info *fs_info,
spin_lock(&info->lock);
btrfs_info(fs_info, "space_info %llu has %llu free, is %sfull",
info->flags,
info->total_bytes - info->bytes_used - info->bytes_pinned -
info->bytes_reserved - info->bytes_readonly -
info->bytes_may_use, (info->full) ? "" : "not ");
info->total_bytes - btrfs_space_info_used(info, true),
info->full ? "" : "not ");
btrfs_info(fs_info,
"space_info total=%llu, used=%llu, pinned=%llu, reserved=%llu, may_use=%llu, readonly=%llu",
info->total_bytes, info->bytes_used, info->bytes_pinned,
@ -9346,8 +9345,7 @@ static int inc_block_group_ro(struct btrfs_block_group_cache *cache, int force)
num_bytes = cache->key.offset - cache->reserved - cache->pinned -
cache->bytes_super - btrfs_block_group_used(&cache->item);
if (sinfo->bytes_used + sinfo->bytes_reserved + sinfo->bytes_pinned +
sinfo->bytes_may_use + sinfo->bytes_readonly + num_bytes +
if (btrfs_space_info_used(sinfo, true) + num_bytes +
min_allocable_bytes <= sinfo->total_bytes) {
sinfo->bytes_readonly += num_bytes;
cache->ro++;
@ -9557,9 +9555,8 @@ int btrfs_can_relocate(struct btrfs_fs_info *fs_info, u64 bytenr)
* all of the extents from this block group. If we can, we're good
*/
if ((space_info->total_bytes != block_group->key.offset) &&
(space_info->bytes_used + space_info->bytes_reserved +
space_info->bytes_pinned + space_info->bytes_readonly +
min_free < space_info->total_bytes)) {
(btrfs_space_info_used(space_info, false) + min_free <
space_info->total_bytes)) {
spin_unlock(&space_info->lock);
goto out;
}