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-rw-r--r--Documentation/filesystems/f2fs.rst5
-rw-r--r--fs/f2fs/Kconfig10
-rw-r--r--fs/f2fs/compress.c41
-rw-r--r--fs/f2fs/f2fs.h9
-rw-r--r--fs/f2fs/super.c89
-rw-r--r--include/linux/f2fs_fs.h3
6 files changed, 152 insertions, 5 deletions
diff --git a/Documentation/filesystems/f2fs.rst b/Documentation/filesystems/f2fs.rst
index dae15c96e659..5eff4009e77e 100644
--- a/Documentation/filesystems/f2fs.rst
+++ b/Documentation/filesystems/f2fs.rst
@@ -249,6 +249,11 @@ checkpoint=%s[:%u[%]] Set to "disable" to turn off checkpointing. Set to "enabl
This space is reclaimed once checkpoint=enable.
compress_algorithm=%s Control compress algorithm, currently f2fs supports "lzo",
"lz4", "zstd" and "lzo-rle" algorithm.
+compress_algorithm=%s:%d Control compress algorithm and its compress level, now, only
+ "lz4" and "zstd" support compress level config.
+ algorithm level range
+ lz4 3 - 16
+ zstd 1 - 22
compress_log_size=%u Support configuring compress cluster size, the size will
be 4KB * (1 << %u), 16KB is minimum size, also it's
default size.
diff --git a/fs/f2fs/Kconfig b/fs/f2fs/Kconfig
index d13c5c6a9787..63c1fc1a0e3b 100644
--- a/fs/f2fs/Kconfig
+++ b/fs/f2fs/Kconfig
@@ -119,6 +119,16 @@ config F2FS_FS_LZ4
help
Support LZ4 compress algorithm, if unsure, say Y.
+config F2FS_FS_LZ4HC
+ bool "LZ4HC compression support"
+ depends on F2FS_FS_COMPRESSION
+ depends on F2FS_FS_LZ4
+ select LZ4HC_COMPRESS
+ default y
+ help
+ Support LZ4HC compress algorithm, LZ4HC has compatible on-disk
+ layout with LZ4, if unsure, say Y.
+
config F2FS_FS_ZSTD
bool "ZSTD compression support"
depends on F2FS_FS_COMPRESSION
diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 4bcbacfe3325..a345a41e2119 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -252,8 +252,14 @@ static const struct f2fs_compress_ops f2fs_lzo_ops = {
#ifdef CONFIG_F2FS_FS_LZ4
static int lz4_init_compress_ctx(struct compress_ctx *cc)
{
- cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode),
- LZ4_MEM_COMPRESS, GFP_NOFS);
+ unsigned int size = LZ4_MEM_COMPRESS;
+
+#ifdef CONFIG_F2FS_FS_LZ4HC
+ if (F2FS_I(cc->inode)->i_compress_flag >> COMPRESS_LEVEL_OFFSET)
+ size = LZ4HC_MEM_COMPRESS;
+#endif
+
+ cc->private = f2fs_kvmalloc(F2FS_I_SB(cc->inode), size, GFP_NOFS);
if (!cc->private)
return -ENOMEM;
@@ -272,10 +278,34 @@ static void lz4_destroy_compress_ctx(struct compress_ctx *cc)
cc->private = NULL;
}
+#ifdef CONFIG_F2FS_FS_LZ4HC
+static int lz4hc_compress_pages(struct compress_ctx *cc)
+{
+ unsigned char level = F2FS_I(cc->inode)->i_compress_flag >>
+ COMPRESS_LEVEL_OFFSET;
+ int len;
+
+ if (level)
+ len = LZ4_compress_HC(cc->rbuf, cc->cbuf->cdata, cc->rlen,
+ cc->clen, level, cc->private);
+ else
+ len = LZ4_compress_default(cc->rbuf, cc->cbuf->cdata, cc->rlen,
+ cc->clen, cc->private);
+ if (!len)
+ return -EAGAIN;
+
+ cc->clen = len;
+ return 0;
+}
+#endif
+
static int lz4_compress_pages(struct compress_ctx *cc)
{
int len;
+#ifdef CONFIG_F2FS_FS_LZ4HC
+ return lz4hc_compress_pages(cc);
+#endif
len = LZ4_compress_default(cc->rbuf, cc->cbuf->cdata, cc->rlen,
cc->clen, cc->private);
if (!len)
@@ -325,8 +355,13 @@ static int zstd_init_compress_ctx(struct compress_ctx *cc)
ZSTD_CStream *stream;
void *workspace;
unsigned int workspace_size;
+ unsigned char level = F2FS_I(cc->inode)->i_compress_flag >>
+ COMPRESS_LEVEL_OFFSET;
+
+ if (!level)
+ level = F2FS_ZSTD_DEFAULT_CLEVEL;
- params = ZSTD_getParams(F2FS_ZSTD_DEFAULT_CLEVEL, cc->rlen, 0);
+ params = ZSTD_getParams(level, cc->rlen, 0);
workspace_size = ZSTD_CStreamWorkspaceBound(params.cParams);
workspace = f2fs_kvmalloc(F2FS_I_SB(cc->inode),
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index bb11759191dc..36012181c17f 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -146,6 +146,7 @@ struct f2fs_mount_info {
/* For compression */
unsigned char compress_algorithm; /* algorithm type */
unsigned char compress_log_size; /* cluster log size */
+ unsigned char compress_level; /* compress level */
bool compress_chksum; /* compressed data chksum */
unsigned char compress_ext_cnt; /* extension count */
int compress_mode; /* compression mode */
@@ -735,6 +736,7 @@ struct f2fs_inode_info {
atomic_t i_compr_blocks; /* # of compressed blocks */
unsigned char i_compress_algorithm; /* algorithm type */
unsigned char i_log_cluster_size; /* log of cluster size */
+ unsigned char i_compress_level; /* compress level (lz4hc,zstd) */
unsigned short i_compress_flag; /* compress flag */
unsigned int i_cluster_size; /* cluster size */
};
@@ -1310,6 +1312,8 @@ struct compress_data {
#define F2FS_COMPRESSED_PAGE_MAGIC 0xF5F2C000
+#define COMPRESS_LEVEL_OFFSET 8
+
/* compress context */
struct compress_ctx {
struct inode *inode; /* inode the context belong to */
@@ -3934,6 +3938,11 @@ static inline void set_compress_context(struct inode *inode)
1 << COMPRESS_CHKSUM : 0;
F2FS_I(inode)->i_cluster_size =
1 << F2FS_I(inode)->i_log_cluster_size;
+ if (F2FS_I(inode)->i_compress_algorithm == COMPRESS_LZ4 &&
+ F2FS_OPTION(sbi).compress_level)
+ F2FS_I(inode)->i_compress_flag |=
+ F2FS_OPTION(sbi).compress_level <<
+ COMPRESS_LEVEL_OFFSET;
F2FS_I(inode)->i_flags |= F2FS_COMPR_FL;
set_inode_flag(inode, FI_COMPRESSED_FILE);
stat_inc_compr_inode(inode);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index a275bd312ae5..c8be27a9eed6 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -25,6 +25,8 @@
#include <linux/quota.h>
#include <linux/unicode.h>
#include <linux/part_stat.h>
+#include <linux/zstd.h>
+#include <linux/lz4.h>
#include "f2fs.h"
#include "node.h"
@@ -464,6 +466,74 @@ static int f2fs_set_test_dummy_encryption(struct super_block *sb,
return 0;
}
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+#ifdef CONFIG_F2FS_FS_LZ4
+static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
+{
+#ifdef CONFIG_F2FS_FS_LZ4HC
+ unsigned int level;
+#endif
+
+ if (strlen(str) == 3) {
+ F2FS_OPTION(sbi).compress_level = 0;
+ return 0;
+ }
+
+#ifdef CONFIG_F2FS_FS_LZ4HC
+ str += 3;
+
+ if (str[0] != ':') {
+ f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
+ return -EINVAL;
+ }
+ if (kstrtouint(str + 1, 10, &level))
+ return -EINVAL;
+
+ if (level < LZ4HC_MIN_CLEVEL || level > LZ4HC_MAX_CLEVEL) {
+ f2fs_info(sbi, "invalid lz4hc compress level: %d", level);
+ return -EINVAL;
+ }
+
+ F2FS_OPTION(sbi).compress_level = level;
+ return 0;
+#else
+ f2fs_info(sbi, "kernel doesn't support lz4hc compression");
+ return -EINVAL;
+#endif
+}
+#endif
+
+#ifdef CONFIG_F2FS_FS_ZSTD
+static int f2fs_set_zstd_level(struct f2fs_sb_info *sbi, const char *str)
+{
+ unsigned int level;
+ int len = 4;
+
+ if (strlen(str) == len) {
+ F2FS_OPTION(sbi).compress_level = 0;
+ return 0;
+ }
+
+ str += len;
+
+ if (str[0] != ':') {
+ f2fs_info(sbi, "wrong format, e.g. <alg_name>:<compr_level>");
+ return -EINVAL;
+ }
+ if (kstrtouint(str + 1, 10, &level))
+ return -EINVAL;
+
+ if (!level || level > ZSTD_maxCLevel()) {
+ f2fs_info(sbi, "invalid zstd compress level: %d", level);
+ return -EINVAL;
+ }
+
+ F2FS_OPTION(sbi).compress_level = level;
+ return 0;
+}
+#endif
+#endif
+
static int parse_options(struct super_block *sb, char *options, bool is_remount)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
@@ -883,20 +953,31 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
return -ENOMEM;
if (!strcmp(name, "lzo")) {
#ifdef CONFIG_F2FS_FS_LZO
+ F2FS_OPTION(sbi).compress_level = 0;
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZO;
#else
f2fs_info(sbi, "kernel doesn't support lzo compression");
#endif
- } else if (!strcmp(name, "lz4")) {
+ } else if (!strncmp(name, "lz4", 3)) {
#ifdef CONFIG_F2FS_FS_LZ4
+ ret = f2fs_set_lz4hc_level(sbi, name);
+ if (ret) {
+ kfree(name);
+ return -EINVAL;
+ }
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZ4;
#else
f2fs_info(sbi, "kernel doesn't support lz4 compression");
#endif
- } else if (!strcmp(name, "zstd")) {
+ } else if (!strncmp(name, "zstd", 4)) {
#ifdef CONFIG_F2FS_FS_ZSTD
+ ret = f2fs_set_zstd_level(sbi, name);
+ if (ret) {
+ kfree(name);
+ return -EINVAL;
+ }
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_ZSTD;
#else
@@ -904,6 +985,7 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
#endif
} else if (!strcmp(name, "lzo-rle")) {
#ifdef CONFIG_F2FS_FS_LZORLE
+ F2FS_OPTION(sbi).compress_level = 0;
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZORLE;
#else
@@ -1555,6 +1637,9 @@ static inline void f2fs_show_compress_options(struct seq_file *seq,
}
seq_printf(seq, ",compress_algorithm=%s", algtype);
+ if (F2FS_OPTION(sbi).compress_level)
+ seq_printf(seq, ":%d", F2FS_OPTION(sbi).compress_level);
+
seq_printf(seq, ",compress_log_size=%u",
F2FS_OPTION(sbi).compress_log_size);
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 7dc2a06cf19a..c6cc0a566ef5 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -274,6 +274,9 @@ struct f2fs_inode {
__u8 i_compress_algorithm; /* compress algorithm */
__u8 i_log_cluster_size; /* log of cluster size */
__le16 i_compress_flag; /* compress flag */
+ /* 0 bit: chksum flag
+ * [10,15] bits: compress level
+ */
__le32 i_extra_end[0]; /* for attribute size calculation */
} __packed;
__le32 i_addr[DEF_ADDRS_PER_INODE]; /* Pointers to data blocks */
generated by cgit (git 2.34.1) at 2024-06-01 12:31:59 +0000