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btrfs: compression: inline init_workspace_manager

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Replace loop calling to all algos with a list of direct calls to the
init manager callback. When that becomes trivial it is replaced by
direct call to the helper.

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 2019-10-02 01:08:03 +02:00
parent 975db48330
commit d551703347
5 changed files with 7 additions and 28 deletions
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17
fs/btrfs/compression.c
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@ -52,6 +52,7 @@ int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb);
int zstd_decompress(struct list_head *ws, unsigned char *data_in,
struct page *dest_page, unsigned long start_byte, size_t srclen,
size_t destlen);
void zstd_init_workspace_manager(void);
static const char* const btrfs_compress_types[] = { "", "zlib", "lzo", "zstd" };
@ -860,11 +861,6 @@ struct heuristic_ws {
static struct workspace_manager heuristic_wsm;
static void heuristic_init_workspace_manager(void)
{
btrfs_init_workspace_manager(BTRFS_COMPRESS_NONE);
}
static void heuristic_cleanup_workspace_manager(void)
{
btrfs_cleanup_workspace_manager(&heuristic_wsm);
@ -921,7 +917,6 @@ fail:
const struct btrfs_compress_op btrfs_heuristic_compress = {
.workspace_manager = &heuristic_wsm,
.init_workspace_manager = heuristic_init_workspace_manager,
.cleanup_workspace_manager = heuristic_cleanup_workspace_manager,
.get_workspace = heuristic_get_workspace,
.put_workspace = heuristic_put_workspace,
@ -937,7 +932,7 @@ static const struct btrfs_compress_op * const btrfs_compress_op[] = {
&btrfs_zstd_compress,
};
void btrfs_init_workspace_manager(int type)
static void btrfs_init_workspace_manager(int type)
{
const struct btrfs_compress_op *ops = btrfs_compress_op[type];
struct workspace_manager *wsm = ops->workspace_manager;
@ -1194,10 +1189,10 @@ int btrfs_decompress(int type, unsigned char *data_in, struct page *dest_page,
void __init btrfs_init_compress(void)
{
int i;
for (i = 0; i < BTRFS_NR_WORKSPACE_MANAGERS; i++)
btrfs_compress_op[i]->init_workspace_manager();
btrfs_init_workspace_manager(BTRFS_COMPRESS_NONE);
btrfs_init_workspace_manager(BTRFS_COMPRESS_ZLIB);
btrfs_init_workspace_manager(BTRFS_COMPRESS_LZO);
zstd_init_workspace_manager();
}
void __cold btrfs_exit_compress(void)

3
fs/btrfs/compression.h
View File

@ -120,15 +120,12 @@ struct workspace_manager {
wait_queue_head_t ws_wait;
};
void btrfs_init_workspace_manager(int type);
struct list_head *btrfs_get_workspace(struct workspace_manager *wsm,
unsigned int level);
void btrfs_put_workspace(struct workspace_manager *wsm, struct list_head *ws);
void btrfs_cleanup_workspace_manager(struct workspace_manager *wsm);
struct btrfs_compress_op {
void (*init_workspace_manager)(void);
void (*cleanup_workspace_manager)(void);
struct list_head *(*get_workspace)(unsigned int level);

6
fs/btrfs/lzo.c
View File

@ -63,11 +63,6 @@ struct workspace {
static struct workspace_manager wsm;
static void lzo_init_workspace_manager(void)
{
btrfs_init_workspace_manager(BTRFS_COMPRESS_LZO);
}
static void lzo_cleanup_workspace_manager(void)
{
btrfs_cleanup_workspace_manager(&wsm);
@ -504,7 +499,6 @@ out:
const struct btrfs_compress_op btrfs_lzo_compress = {
.workspace_manager = &wsm,
.init_workspace_manager = lzo_init_workspace_manager,
.cleanup_workspace_manager = lzo_cleanup_workspace_manager,
.get_workspace = lzo_get_workspace,
.put_workspace = lzo_put_workspace,

6
fs/btrfs/zlib.c
View File

@ -29,11 +29,6 @@ struct workspace {
static struct workspace_manager wsm;
static void zlib_init_workspace_manager(void)
{
btrfs_init_workspace_manager(BTRFS_COMPRESS_ZLIB);
}
static void zlib_cleanup_workspace_manager(void)
{
btrfs_cleanup_workspace_manager(&wsm);
@ -415,7 +410,6 @@ next:
const struct btrfs_compress_op btrfs_zlib_compress = {
.workspace_manager = &wsm,
.init_workspace_manager = zlib_init_workspace_manager,
.cleanup_workspace_manager = zlib_cleanup_workspace_manager,
.get_workspace = zlib_get_workspace,
.put_workspace = zlib_put_workspace,

3
fs/btrfs/zstd.c
View File

@ -168,7 +168,7 @@ static void zstd_calc_ws_mem_sizes(void)
}
}
static void zstd_init_workspace_manager(void)
void zstd_init_workspace_manager(void)
{
struct list_head *ws;
int i;
@ -709,7 +709,6 @@ finish:
const struct btrfs_compress_op btrfs_zstd_compress = {
/* ZSTD uses own workspace manager */
.workspace_manager = NULL,
.init_workspace_manager = zstd_init_workspace_manager,
.cleanup_workspace_manager = zstd_cleanup_workspace_manager,
.get_workspace = zstd_get_workspace,
.put_workspace = zstd_put_workspace,