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btrfs: move the space info update macro to space-info.h

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Also rename it to btrfs_space_info_update_* so it's clear what we're
updating.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik
2019-06-18 16:09:21 -04:00
committed by David Sterba
parent 41783ef24d
commit bb96c4e574
2 changed files with 49 additions and 37 deletions
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23
fs/btrfs/space-info.h
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@ -75,6 +75,29 @@ static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
(space_info->flags & BTRFS_BLOCK_GROUP_DATA));
}
/*
*
* Declare a helper function to detect underflow of various space info members
*/
#define DECLARE_SPACE_INFO_UPDATE(name) \
static inline void \
btrfs_space_info_update_##name(struct btrfs_fs_info *fs_info, \
struct btrfs_space_info *sinfo, \
s64 bytes) \
{ \
lockdep_assert_held(&sinfo->lock); \
trace_update_##name(fs_info, sinfo, sinfo->name, bytes); \
if (bytes < 0 && sinfo->name < -bytes) { \
WARN_ON(1); \
sinfo->name = 0; \
return; \
} \
sinfo->name += bytes; \
}
DECLARE_SPACE_INFO_UPDATE(bytes_may_use);
DECLARE_SPACE_INFO_UPDATE(bytes_pinned);
void btrfs_space_info_add_new_bytes(struct btrfs_fs_info *fs_info,
struct btrfs_space_info *space_info,
u64 num_bytes);