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btrfs: compression: pass type to btrfs_get_workspace

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We can infer the workspace_manager from type and the type will be used
in the following patch to call a common helper for alloc_workspace.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-10-04 02:50:28 +02:00
parent bd3a5287cc
commit 5907a9bb13
3 changed files with 7 additions and 10 deletions
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12
fs/btrfs/compression.c
View file

@ -972,9 +972,9 @@ static void btrfs_cleanup_workspace_manager(int type)
* Preallocation makes a forward progress guarantees and we do not return
* errors.
*/
struct list_head *btrfs_get_workspace(struct workspace_manager *wsm,
unsigned int level)
struct list_head *btrfs_get_workspace(int type, unsigned int level)
{
struct workspace_manager *wsm;
struct list_head *workspace;
int cpus = num_online_cpus();
unsigned nofs_flag;
@ -984,6 +984,7 @@ struct list_head *btrfs_get_workspace(struct workspace_manager *wsm,
wait_queue_head_t *ws_wait;
int *free_ws;
wsm = btrfs_compress_op[type]->workspace_manager;
idle_ws = &wsm->idle_ws;
ws_lock = &wsm->ws_lock;
total_ws = &wsm->total_ws;
@ -1052,13 +1053,10 @@ again:
static struct list_head *get_workspace(int type, int level)
{
struct workspace_manager *wsm;
wsm = btrfs_compress_op[type]->workspace_manager;
switch (type) {
case BTRFS_COMPRESS_NONE: return btrfs_get_workspace(wsm, level);
case BTRFS_COMPRESS_NONE: return btrfs_get_workspace(type, level);
case BTRFS_COMPRESS_ZLIB: return zlib_get_workspace(level);
case BTRFS_COMPRESS_LZO: return btrfs_get_workspace(wsm, level);
case BTRFS_COMPRESS_LZO: return btrfs_get_workspace(type, level);
case BTRFS_COMPRESS_ZSTD: return zstd_get_workspace(level);
default:
/*

3
fs/btrfs/compression.h
View file

@ -120,8 +120,7 @@ struct workspace_manager {
wait_queue_head_t ws_wait;
};
struct list_head *btrfs_get_workspace(struct workspace_manager *wsm,
unsigned int level);
struct list_head *btrfs_get_workspace(int type, unsigned int level);
void btrfs_put_workspace(struct workspace_manager *wsm, struct list_head *ws);
struct btrfs_compress_op {

2
fs/btrfs/zlib.c
View file

@ -31,7 +31,7 @@ static struct workspace_manager wsm;
struct list_head *zlib_get_workspace(unsigned int level)
{
struct list_head *ws = btrfs_get_workspace(&wsm, level);
struct list_head *ws = btrfs_get_workspace(BTRFS_COMPRESS_ZLIB, level);
struct workspace *workspace = list_entry(ws, struct workspace, list);
workspace->level = level;