From: Dennis Zhou <dennis@kernel.org>
To: David Sterba <dsterba@suse.com>,
Josef Bacik <josef@toxicpanda.com>, Chris Mason <clm@fb.com>,
Omar Sandoval <osandov@osandov.com>,
Nick Terrell <terrelln@fb.com>,
Nikolay Borisov <nborisov@suse.com>
Cc: kernel-team@fb.com, linux-btrfs@vger.kernel.org,
linux-kernel@vger.kernel.org, Dennis Zhou <dennis@kernel.org>
Subject: [PATCH 09/12] btrfs: change set_level() to bound the level passed in
Date: Mon, 4 Feb 2019 15:20:05 -0500 [thread overview]
Message-ID: <20190204202008.51652-10-dennis@kernel.org> (raw)
In-Reply-To: <20190204202008.51652-1-dennis@kernel.org>
Currently, the only user of set_level() is zlib which sets an internal
workspace parameter. As level is now plumbed into get_workspace(), this
can be handled there rather than separately.
This repurposes set_level() to bound the level passed in so it can be
used when setting the mounts compression level and as well as verifying
the level before getting a workspace. The other benefit is this divides
the meaning of compress(0) and get_workspace(0). The former means we
want to use the default compression level of the compression type. The
latter means we can use any workspace available.
Signed-off-by: Dennis Zhou <dennis@kernel.org>
---
fs/btrfs/compression.c | 21 +++++++++++++--------
fs/btrfs/compression.h | 10 ++++++++--
fs/btrfs/lzo.c | 3 ++-
fs/btrfs/super.c | 4 +++-
fs/btrfs/zlib.c | 18 ++++++++++--------
fs/btrfs/zstd.c | 3 ++-
6 files changed, 38 insertions(+), 21 deletions(-)
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index a54b210739bc..dc4afd7d9027 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -1007,8 +1007,6 @@ 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,
@@ -1561,14 +1559,21 @@ int btrfs_compress_heuristic(struct inode *inode, u64 start, u64 end)
return ret;
}
-unsigned int btrfs_compress_str2level(const char *str)
+unsigned int btrfs_compress_str2level(unsigned int type, const char *str)
{
- if (strncmp(str, "zlib", 4) != 0)
+ unsigned int level;
+ 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 32ba40ebae1d..3f2d36b0aabe 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 +156,13 @@ 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 @@ static int lzo_decompress(struct list_head *ws, unsigned char *data_in,
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 c5586ffd1426..b28dff207383 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 c0ef09bef3b3..77363f663868 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 @@ static int zlib_decompress(struct list_head *ws, unsigned char *data_in,
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 @@ static int zstd_decompress(struct list_head *ws, unsigned char *data_in,
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 = {
--
2.17.1
next prev parent reply other threads:[~2019-02-04 20:21 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-04 20:19 [PATCH v2 00/12] btrfs: add zstd compression level support Dennis Zhou
2019-02-04 20:19 ` [PATCH 01/12] btrfs: add helpers for compression type and level Dennis Zhou
2019-02-04 20:19 ` [PATCH 02/12] btrfs: rename workspaces_list to workspace_manager Dennis Zhou
2019-02-04 20:19 ` [PATCH 03/12] btrfs: manage heuristic workspace as index 0 Dennis Zhou
2019-02-04 20:20 ` [PATCH 04/12] btrfs: unify compression ops with workspace_manager Dennis Zhou
2019-02-04 20:20 ` [PATCH 05/12] btrfs: add helper methods for workspace manager init and cleanup Dennis Zhou
2019-02-04 20:20 ` [PATCH 06/12] btrfs: add compression interface in (get/put)_workspace() Dennis Zhou
2019-02-04 20:20 ` [PATCH 07/12] btrfs: move to fn pointers for get/put workspaces Dennis Zhou
2019-02-04 20:20 ` [PATCH 08/12] btrfs: plumb level through the compression interface Dennis Zhou
2019-02-04 20:20 ` Dennis Zhou [this message]
2019-02-05 19:06 ` [PATCH 09/12] btrfs: change set_level() to bound the level passed in David Sterba
2019-02-05 19:32 ` Dennis Zhou
2019-02-05 19:54 ` David Sterba
2019-02-05 19:59 ` Dennis Zhou
2019-02-06 16:48 ` [PATCH v2 " Dennis Zhou
2019-02-04 20:20 ` [PATCH 10/12] btrfs: zstd use the passed through level instead of default Dennis Zhou
2019-02-04 20:20 ` [PATCH 11/12] btrfs: make zstd memory requirements monotonic Dennis Zhou
2019-02-04 20:20 ` [PATCH 12/12] btrfs: add zstd compression level support Dennis Zhou
2019-02-05 19:26 ` [PATCH v2 " Dennis Zhou
2019-02-06 16:47 ` [PATCH v3 " Dennis Zhou
2019-02-05 14:57 ` [PATCH v2 00/12] " David Sterba
2019-02-05 16:03 ` Dennis Zhou
2019-02-05 16:27 ` David Sterba
2019-02-05 16:30 ` Dennis Zhou
2019-02-05 16:51 ` David Sterba
2019-02-05 17:07 ` David Sterba
2019-02-05 18:27 ` David Sterba
2019-02-05 18:30 ` Dennis Zhou
2019-02-05 20:48 ` Dennis Zhou
2019-02-06 15:15 ` David Sterba
2019-02-06 16:51 ` Dennis Zhou
2019-02-07 16:59 ` David Sterba
2019-02-07 17:36 ` Dennis Zhou
2019-02-08 13:22 ` David Sterba
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