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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/btrfs/zstd.c
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/btrfs/zstd.c')
-rw-r--r--fs/btrfs/zstd.c13
1 files changed, 6 insertions, 7 deletions
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;