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btrfs: rename btrfs_block_group_cache

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The type name is misleading, a single entry is named 'cache' while this
normally means a collection of objects. Rename that everywhere. Also the
identifier was quite long, making function prototypes harder to format.

Suggested-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-10-29 19:20:18 +01:00
parent d49a2ddb15
commit 32da5386d9
26 changed files with 278 additions and 293 deletions
Download patch file Download diff file Expand all files Collapse all files

67
fs/btrfs/extent-tree.c
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@ -54,7 +54,7 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
static int find_next_key(struct btrfs_path *path, int level,
struct btrfs_key *key);
static int block_group_bits(struct btrfs_block_group_cache *cache, u64 bits)
static int block_group_bits(struct btrfs_block_group *cache, u64 bits)
{
return (cache->flags & bits) == bits;
}
@ -70,7 +70,7 @@ int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info,
return 0;
}
void btrfs_free_excluded_extents(struct btrfs_block_group_cache *cache)
void btrfs_free_excluded_extents(struct btrfs_block_group *cache)
{
struct btrfs_fs_info *fs_info = cache->fs_info;
u64 start, end;
@ -2537,7 +2537,7 @@ int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
int btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr)
{
struct btrfs_block_group_cache *block_group;
struct btrfs_block_group *block_group;
int readonly = 0;
block_group = btrfs_lookup_block_group(fs_info, bytenr);
@ -2567,7 +2567,7 @@ static u64 get_alloc_profile_by_root(struct btrfs_root *root, int data)
static u64 first_logical_byte(struct btrfs_fs_info *fs_info, u64 search_start)
{
struct btrfs_block_group_cache *cache;
struct btrfs_block_group *cache;
u64 bytenr;
spin_lock(&fs_info->block_group_cache_lock);
@ -2587,7 +2587,7 @@ static u64 first_logical_byte(struct btrfs_fs_info *fs_info, u64 search_start)
return bytenr;
}
static int pin_down_extent(struct btrfs_block_group_cache *cache,
static int pin_down_extent(struct btrfs_block_group *cache,
u64 bytenr, u64 num_bytes, int reserved)
{
struct btrfs_fs_info *fs_info = cache->fs_info;
@ -2614,7 +2614,7 @@ static int pin_down_extent(struct btrfs_block_group_cache *cache,
int btrfs_pin_extent(struct btrfs_fs_info *fs_info,
u64 bytenr, u64 num_bytes, int reserved)
{
struct btrfs_block_group_cache *cache;
struct btrfs_block_group *cache;
ASSERT(fs_info->running_transaction);
@ -2633,7 +2633,7 @@ int btrfs_pin_extent(struct btrfs_fs_info *fs_info,
int btrfs_pin_extent_for_log_replay(struct btrfs_fs_info *fs_info,
u64 bytenr, u64 num_bytes)
{
struct btrfs_block_group_cache *cache;
struct btrfs_block_group *cache;
int ret;
cache = btrfs_lookup_block_group(fs_info, bytenr);
@ -2660,7 +2660,7 @@ static int __exclude_logged_extent(struct btrfs_fs_info *fs_info,
u64 start, u64 num_bytes)
{
int ret;
struct btrfs_block_group_cache *block_group;
struct btrfs_block_group *block_group;
struct btrfs_caching_control *caching_ctl;
block_group = btrfs_lookup_block_group(fs_info, start);
@ -2672,7 +2672,7 @@ static int __exclude_logged_extent(struct btrfs_fs_info *fs_info,
if (!caching_ctl) {
/* Logic error */
BUG_ON(!btrfs_block_group_cache_done(block_group));
BUG_ON(!btrfs_block_group_done(block_group));
ret = btrfs_remove_free_space(block_group, start, num_bytes);
} else {
mutex_lock(&caching_ctl->mutex);
@ -2737,7 +2737,7 @@ int btrfs_exclude_logged_extents(struct extent_buffer *eb)
}
static void
btrfs_inc_block_group_reservations(struct btrfs_block_group_cache *bg)
btrfs_inc_block_group_reservations(struct btrfs_block_group *bg)
{
atomic_inc(&bg->reservations);
}
@ -2746,14 +2746,14 @@ void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info)
{
struct btrfs_caching_control *next;
struct btrfs_caching_control *caching_ctl;
struct btrfs_block_group_cache *cache;
struct btrfs_block_group *cache;
down_write(&fs_info->commit_root_sem);
list_for_each_entry_safe(caching_ctl, next,
&fs_info->caching_block_groups, list) {
cache = caching_ctl->block_group;
if (btrfs_block_group_cache_done(cache)) {
if (btrfs_block_group_done(cache)) {
cache->last_byte_to_unpin = (u64)-1;
list_del_init(&caching_ctl->list);
btrfs_put_caching_control(caching_ctl);
@ -2805,7 +2805,7 @@ static int unpin_extent_range(struct btrfs_fs_info *fs_info,
u64 start, u64 end,
const bool return_free_space)
{
struct btrfs_block_group_cache *cache = NULL;
struct btrfs_block_group *cache = NULL;
struct btrfs_space_info *space_info;
struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
struct btrfs_free_cluster *cluster = NULL;
@ -2900,7 +2900,7 @@ static int unpin_extent_range(struct btrfs_fs_info *fs_info,
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
struct btrfs_block_group_cache *block_group, *tmp;
struct btrfs_block_group *block_group, *tmp;
struct list_head *deleted_bgs;
struct extent_io_tree *unpin;
u64 start;
@ -3282,7 +3282,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
}
if (last_ref && btrfs_header_generation(buf) == trans->transid) {
struct btrfs_block_group_cache *cache;
struct btrfs_block_group *cache;
if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
ret = check_ref_cleanup(trans, buf->start);
@ -3369,15 +3369,14 @@ enum btrfs_loop_type {
};
static inline void
btrfs_lock_block_group(struct btrfs_block_group_cache *cache,
btrfs_lock_block_group(struct btrfs_block_group *cache,
int delalloc)
{
if (delalloc)
down_read(&cache->data_rwsem);
}
static inline void
btrfs_grab_block_group(struct btrfs_block_group_cache *cache,
static inline void btrfs_grab_block_group(struct btrfs_block_group *cache,
int delalloc)
{
btrfs_get_block_group(cache);
@ -3385,12 +3384,12 @@ btrfs_grab_block_group(struct btrfs_block_group_cache *cache,
down_read(&cache->data_rwsem);
}
static struct btrfs_block_group_cache *
btrfs_lock_cluster(struct btrfs_block_group_cache *block_group,
static struct btrfs_block_group *btrfs_lock_cluster(
struct btrfs_block_group *block_group,
struct btrfs_free_cluster *cluster,
int delalloc)
{
struct btrfs_block_group_cache *used_bg = NULL;
struct btrfs_block_group *used_bg = NULL;
spin_lock(&cluster->refill_lock);
while (1) {
@ -3424,7 +3423,7 @@ btrfs_lock_cluster(struct btrfs_block_group_cache *block_group,
}
static inline void
btrfs_release_block_group(struct btrfs_block_group_cache *cache,
btrfs_release_block_group(struct btrfs_block_group *cache,
int delalloc)
{
if (delalloc)
@ -3495,12 +3494,12 @@ struct find_free_extent_ctl {
* Return >0 to inform caller that we find nothing
* Return 0 means we have found a location and set ffe_ctl->found_offset.
*/
static int find_free_extent_clustered(struct btrfs_block_group_cache *bg,
static int find_free_extent_clustered(struct btrfs_block_group *bg,
struct btrfs_free_cluster *last_ptr,
struct find_free_extent_ctl *ffe_ctl,
struct btrfs_block_group_cache **cluster_bg_ret)
struct btrfs_block_group **cluster_bg_ret)
{
struct btrfs_block_group_cache *cluster_bg;
struct btrfs_block_group *cluster_bg;
u64 aligned_cluster;
u64 offset;
int ret;
@ -3599,7 +3598,7 @@ refill_cluster:
* Return 0 when we found an free extent and set ffe_ctrl->found_offset
* Return -EAGAIN to inform caller that we need to re-search this block group
*/
static int find_free_extent_unclustered(struct btrfs_block_group_cache *bg,
static int find_free_extent_unclustered(struct btrfs_block_group *bg,
struct btrfs_free_cluster *last_ptr,
struct find_free_extent_ctl *ffe_ctl)
{
@ -3801,7 +3800,7 @@ static noinline int find_free_extent(struct btrfs_fs_info *fs_info,
{
int ret = 0;
struct btrfs_free_cluster *last_ptr = NULL;
struct btrfs_block_group_cache *block_group = NULL;
struct btrfs_block_group *block_group = NULL;
struct find_free_extent_ctl ffe_ctl = {0};
struct btrfs_space_info *space_info;
bool use_cluster = true;
@ -3955,7 +3954,7 @@ search:
}
have_block_group:
ffe_ctl.cached = btrfs_block_group_cache_done(block_group);
ffe_ctl.cached = btrfs_block_group_done(block_group);
if (unlikely(!ffe_ctl.cached)) {
ffe_ctl.have_caching_bg = true;
ret = btrfs_cache_block_group(block_group, 0);
@ -3971,7 +3970,7 @@ have_block_group:
* lets look there
*/
if (last_ptr && use_cluster) {
struct btrfs_block_group_cache *cluster_bg = NULL;
struct btrfs_block_group *cluster_bg = NULL;
ret = find_free_extent_clustered(block_group, last_ptr,
&ffe_ctl, &cluster_bg);
@ -4153,7 +4152,7 @@ static int __btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info,
u64 start, u64 len,
int pin, int delalloc)
{
struct btrfs_block_group_cache *cache;
struct btrfs_block_group *cache;
int ret = 0;
cache = btrfs_lookup_block_group(fs_info, start);
@ -4386,7 +4385,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
{
struct btrfs_fs_info *fs_info = trans->fs_info;
int ret;
struct btrfs_block_group_cache *block_group;
struct btrfs_block_group *block_group;
struct btrfs_space_info *space_info;
/*
@ -5500,7 +5499,7 @@ int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
*/
u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo)
{
struct btrfs_block_group_cache *block_group;
struct btrfs_block_group *block_group;
u64 free_bytes = 0;
int factor;
@ -5642,7 +5641,7 @@ static int btrfs_trim_free_extents(struct btrfs_device *device, u64 *trimmed)
*/
int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range)
{
struct btrfs_block_group_cache *cache = NULL;
struct btrfs_block_group *cache = NULL;
struct btrfs_device *device;
struct list_head *devices;
u64 group_trimmed;
@ -5675,7 +5674,7 @@ int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range)
end = min(range_end, cache->start + cache->length);
if (end - start >= range->minlen) {
if (!btrfs_block_group_cache_done(cache)) {
if (!btrfs_block_group_done(cache)) {
ret = btrfs_cache_block_group(cache, 0);
if (ret) {
bg_failed++;