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btrfs: relocation: use enum for stages

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Add an enum type for data relocation stages.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
2023-09-22 13:07:16 +02:00
parent a3bb700f43
commit 8daf07cf2b
1 changed files with 9 additions and 7 deletions
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16
fs/btrfs/relocation.c
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@@ -125,6 +125,12 @@ struct file_extent_cluster {
u64 owning_root; u64 owning_root;
}; };
/* Stages of data relocation. */
enum reloc_stage {
MOVE_DATA_EXTENTS,
UPDATE_DATA_PTRS
};
struct reloc_control { struct reloc_control {
/* block group to relocate */ /* block group to relocate */
struct btrfs_block_group *block_group; struct btrfs_block_group *block_group;
@@ -156,16 +162,12 @@ struct reloc_control {
u64 search_start; u64 search_start;
u64 extents_found; u64 extents_found;
unsigned int stage:8; enum reloc_stage stage;
unsigned int create_reloc_tree:1; unsigned int create_reloc_tree:1;
unsigned int merge_reloc_tree:1; unsigned int merge_reloc_tree:1;
unsigned int found_file_extent:1; unsigned int found_file_extent:1;
}; };
/* stages of data relocation */
#define MOVE_DATA_EXTENTS 0
#define UPDATE_DATA_PTRS 1
static void mark_block_processed(struct reloc_control *rc, static void mark_block_processed(struct reloc_control *rc,
struct btrfs_backref_node *node) struct btrfs_backref_node *node)
{ {
@@ -4054,7 +4056,7 @@ static void describe_relocation(struct btrfs_fs_info *fs_info,
block_group->start, buf); block_group->start, buf);
} }
static const char *stage_to_string(int stage) static const char *stage_to_string(enum reloc_stage stage)
{ {
if (stage == MOVE_DATA_EXTENTS) if (stage == MOVE_DATA_EXTENTS)
return "move data extents"; return "move data extents";
@@ -4170,7 +4172,7 @@ int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start)
WARN_ON(ret && ret != -EAGAIN); WARN_ON(ret && ret != -EAGAIN);
while (1) { while (1) {
int finishes_stage; enum reloc_stage finishes_stage;
mutex_lock(&fs_info->cleaner_mutex); mutex_lock(&fs_info->cleaner_mutex);
ret = relocate_block_group(rc); ret = relocate_block_group(rc);