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-rw-r--r--fs/btrfs/compression.c25
-rw-r--r--fs/btrfs/compression.h9
-rw-r--r--fs/btrfs/lzo.c3
-rw-r--r--fs/btrfs/super.c4
-rw-r--r--fs/btrfs/zlib.c18
-rw-r--r--fs/btrfs/zstd.c3
6 files changed, 41 insertions, 21 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index ccd6bb2061f6..eb8e20b740d6 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -1009,8 +1009,6 @@ int btrfs_compress_pages(unsigned int type_level, struct address_space *mapping,
int ret;
workspace = get_workspace(type, level);
-
- btrfs_compress_op[type]->set_level(workspace, level);
ret = btrfs_compress_op[type]->compress_pages(workspace, mapping,
start, pages,
out_pages,
@@ -1563,14 +1561,25 @@ out:
return ret;
}
-unsigned int btrfs_compress_str2level(const char *str)
+/*
+ * Convert the compression suffix (eg. after "zlib" starting with ":") to
+ * level, unrecognized string will set the default level
+ */
+unsigned int btrfs_compress_str2level(unsigned int type, const char *str)
{
- if (strncmp(str, "zlib", 4) != 0)
+ unsigned int level = 0;
+ int ret;
+
+ if (!type)
return 0;
- /* Accepted form: zlib:1 up to zlib:9 and nothing left after the number */
- if (str[4] == ':' && '1' <= str[5] && str[5] <= '9' && str[6] == 0)
- return str[5] - '0';
+ if (str[0] == ':') {
+ ret = kstrtouint(str + 1, 10, &level);
+ if (ret)
+ level = 0;
+ }
+
+ level = btrfs_compress_op[type]->set_level(level);
- return BTRFS_ZLIB_DEFAULT_LEVEL;
+ return level;
}
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h
index 2ab8b2f29d88..9976fe0f7526 100644
--- a/fs/btrfs/compression.h
+++ b/fs/btrfs/compression.h
@@ -97,7 +97,7 @@ blk_status_t btrfs_submit_compressed_write(struct inode *inode, u64 start,
blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags);
-unsigned btrfs_compress_str2level(const char *str);
+unsigned int btrfs_compress_str2level(unsigned int type, const char *str);
enum btrfs_compression_type {
BTRFS_COMPRESS_NONE = 0,
@@ -156,7 +156,12 @@ struct btrfs_compress_op {
unsigned long start_byte,
size_t srclen, size_t destlen);
- void (*set_level)(struct list_head *ws, unsigned int type);
+ /*
+ * This bounds the level set by the user to be within range of a
+ * particular compression type. It returns the level that will be used
+ * if the level is out of bounds or the default if 0 is passed in.
+ */
+ unsigned int (*set_level)(unsigned int level);
};
/* The heuristic workspaces are managed via the 0th workspace manager */
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c
index f132af45a924..579d53ae256f 100644
--- a/fs/btrfs/lzo.c
+++ b/fs/btrfs/lzo.c
@@ -507,8 +507,9 @@ out:
return ret;
}
-static void lzo_set_level(struct list_head *ws, unsigned int type)
+static unsigned int lzo_set_level(unsigned int level)
{
+ return 0;
}
const struct btrfs_compress_op btrfs_lzo_compress = {
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index f9d13a30aa8a..9ac94c9d597d 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -529,7 +529,9 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
if (token != Opt_compress &&
token != Opt_compress_force)
info->compress_level =
- btrfs_compress_str2level(args[0].from);
+ btrfs_compress_str2level(
+ BTRFS_COMPRESS_ZLIB,
+ args[0].from + 4);
btrfs_set_opt(info->mount_opt, COMPRESS);
btrfs_clear_opt(info->mount_opt, NODATACOW);
btrfs_clear_opt(info->mount_opt, NODATASUM);
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index fc883a14ecbf..b86b7ad6b900 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -41,7 +41,12 @@ static void zlib_cleanup_workspace_manager(void)
static struct list_head *zlib_get_workspace(unsigned int level)
{
- return btrfs_get_workspace(&wsm, level);
+ struct list_head *ws = btrfs_get_workspace(&wsm, level);
+ struct workspace *workspace = list_entry(ws, struct workspace, list);
+
+ workspace->level = level;
+
+ return ws;
}
static void zlib_put_workspace(struct list_head *ws)
@@ -413,15 +418,12 @@ next:
return ret;
}
-static void zlib_set_level(struct list_head *ws, unsigned int type)
+static unsigned int zlib_set_level(unsigned int level)
{
- struct workspace *workspace = list_entry(ws, struct workspace, list);
- unsigned int level = btrfs_compress_level(type);
-
- if (level > 9)
- level = 9;
+ if (!level)
+ return BTRFS_ZLIB_DEFAULT_LEVEL;
- workspace->level = level > 0 ? level : 3;
+ return min_t(unsigned int, level, 9);
}
const struct btrfs_compress_op btrfs_zlib_compress = {
diff --git a/fs/btrfs/zstd.c b/fs/btrfs/zstd.c
index 404101864220..43f3be755b8c 100644
--- a/fs/btrfs/zstd.c
+++ b/fs/btrfs/zstd.c
@@ -441,8 +441,9 @@ finish:
return ret;
}
-static void zstd_set_level(struct list_head *ws, unsigned int type)
+static unsigned int zstd_set_level(unsigned int level)
{
+ return ZSTD_BTRFS_DEFAULT_LEVEL;
}
const struct btrfs_compress_op btrfs_zstd_compress = {