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authorDavid Sterba <dsterba@suse.com>2019-10-04 02:21:48 +0200
committerDavid Sterba <dsterba@suse.com>2019-11-18 12:46:58 +0100
commitd20f395f98959dee592cf05af0bec7ab5b185e5e (patch)
treee8b3580f2f3c0fdee2b34fc7f85f83611c2d8dd7 /fs
parent2510307e6c78d1d9a59c85164cbff66f8a9f3fed (diff)
downloadlinux-d20f395f98959dee592cf05af0bec7ab5b185e5e.tar.bz2
btrfs: compression: export alloc/free/get/put callbacks of all algos
The indirect calls will be replaced by a switch in compression.c. (Switch is faster than indirect calls with when Spectre mitigations are enabled). Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/compression.c12
-rw-r--r--fs/btrfs/lzo.c8
-rw-r--r--fs/btrfs/zlib.c8
-rw-r--r--fs/btrfs/zstd.c13
4 files changed, 26 insertions, 15 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 34921a120829..f707db4a9a53 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -36,6 +36,10 @@ int zlib_decompress_bio(struct list_head *ws, struct compressed_bio *cb);
int zlib_decompress(struct list_head *ws, unsigned char *data_in,
struct page *dest_page, unsigned long start_byte, size_t srclen,
size_t destlen);
+struct list_head *zlib_alloc_workspace(unsigned int level);
+void zlib_free_workspace(struct list_head *ws);
+struct list_head *zlib_get_workspace(unsigned int level);
+void zlib_put_workspace(struct list_head *ws);
int lzo_compress_pages(struct list_head *ws, struct address_space *mapping,
u64 start, struct page **pages, unsigned long *out_pages,
@@ -44,6 +48,10 @@ int lzo_decompress_bio(struct list_head *ws, struct compressed_bio *cb);
int lzo_decompress(struct list_head *ws, unsigned char *data_in,
struct page *dest_page, unsigned long start_byte, size_t srclen,
size_t destlen);
+struct list_head *lzo_alloc_workspace(unsigned int level);
+void lzo_free_workspace(struct list_head *ws);
+struct list_head *lzo_get_workspace(unsigned int level);
+void lzo_put_workspace(struct list_head *ws);
int zstd_compress_pages(struct list_head *ws, struct address_space *mapping,
u64 start, struct page **pages, unsigned long *out_pages,
@@ -54,6 +62,10 @@ int zstd_decompress(struct list_head *ws, unsigned char *data_in,
size_t destlen);
void zstd_init_workspace_manager(void);
void zstd_cleanup_workspace_manager(void);
+struct list_head *zstd_alloc_workspace(unsigned int level);
+void zstd_free_workspace(struct list_head *ws);
+struct list_head *zstd_get_workspace(unsigned int level);
+void zstd_put_workspace(struct list_head *ws);
static const char* const btrfs_compress_types[] = { "", "zlib", "lzo", "zstd" };
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c
index 6f4619e76c11..18018619c019 100644
--- a/fs/btrfs/lzo.c
+++ b/fs/btrfs/lzo.c
@@ -63,17 +63,17 @@ struct workspace {
static struct workspace_manager wsm;
-static struct list_head *lzo_get_workspace(unsigned int level)
+struct list_head *lzo_get_workspace(unsigned int level)
{
return btrfs_get_workspace(&wsm, level);
}
-static void lzo_put_workspace(struct list_head *ws)
+void lzo_put_workspace(struct list_head *ws)
{
btrfs_put_workspace(&wsm, ws);
}
-static void lzo_free_workspace(struct list_head *ws)
+void lzo_free_workspace(struct list_head *ws)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
@@ -83,7 +83,7 @@ static void lzo_free_workspace(struct list_head *ws)
kfree(workspace);
}
-static struct list_head *lzo_alloc_workspace(unsigned int level)
+struct list_head *lzo_alloc_workspace(unsigned int level)
{
struct workspace *workspace;
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index 03c632c7deac..f2a56e999e5f 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -29,7 +29,7 @@ struct workspace {
static struct workspace_manager wsm;
-static struct list_head *zlib_get_workspace(unsigned int level)
+struct list_head *zlib_get_workspace(unsigned int level)
{
struct list_head *ws = btrfs_get_workspace(&wsm, level);
struct workspace *workspace = list_entry(ws, struct workspace, list);
@@ -39,12 +39,12 @@ static struct list_head *zlib_get_workspace(unsigned int level)
return ws;
}
-static void zlib_put_workspace(struct list_head *ws)
+void zlib_put_workspace(struct list_head *ws)
{
btrfs_put_workspace(&wsm, ws);
}
-static void zlib_free_workspace(struct list_head *ws)
+void zlib_free_workspace(struct list_head *ws)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
@@ -53,7 +53,7 @@ static void zlib_free_workspace(struct list_head *ws)
kfree(workspace);
}
-static struct list_head *zlib_alloc_workspace(unsigned int level)
+struct list_head *zlib_alloc_workspace(unsigned int level)
{
struct workspace *workspace;
int workspacesize;
diff --git a/fs/btrfs/zstd.c b/fs/btrfs/zstd.c
index f575ce77ea3d..2caf08e06e2f 100644
--- a/fs/btrfs/zstd.c
+++ b/fs/btrfs/zstd.c
@@ -91,9 +91,8 @@ static inline struct workspace *list_to_workspace(struct list_head *list)
return container_of(list, struct workspace, list);
}
-static void zstd_free_workspace(struct list_head *ws);
-static struct list_head *zstd_alloc_workspace(unsigned int level);
-
+void zstd_free_workspace(struct list_head *ws);
+struct list_head *zstd_alloc_workspace(unsigned int level);
/*
* zstd_reclaim_timer_fn - reclaim timer
* @t: timer
@@ -261,7 +260,7 @@ static struct list_head *zstd_find_workspace(unsigned int level)
* attempt to allocate a new workspace. If we fail to allocate one due to
* memory pressure, go to sleep waiting for the max level workspace to free up.
*/
-static struct list_head *zstd_get_workspace(unsigned int level)
+struct list_head *zstd_get_workspace(unsigned int level)
{
struct list_head *ws;
unsigned int nofs_flag;
@@ -302,7 +301,7 @@ again:
* isn't set, it is also set here. Only the max level workspace tries and wakes
* up waiting workspaces.
*/
-static void zstd_put_workspace(struct list_head *ws)
+void zstd_put_workspace(struct list_head *ws)
{
struct workspace *workspace = list_to_workspace(ws);
@@ -332,7 +331,7 @@ static void zstd_put_workspace(struct list_head *ws)
cond_wake_up(&wsm.wait);
}
-static void zstd_free_workspace(struct list_head *ws)
+void zstd_free_workspace(struct list_head *ws)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
@@ -341,7 +340,7 @@ static void zstd_free_workspace(struct list_head *ws)
kfree(workspace);
}
-static struct list_head *zstd_alloc_workspace(unsigned int level)
+struct list_head *zstd_alloc_workspace(unsigned int level)
{
struct workspace *workspace;