From: Gao Xiang <hsiangkao@linux.alibaba.com>
To: linux-erofs@lists.ozlabs.org, Chao Yu <chao@kernel.org>,
Liu Bo <bo.liu@linux.alibaba.com>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>,
Eryu Guan <eguan@linux.alibaba.com>,
Liu Jiang <gerry@linux.alibaba.com>,
Peng Tao <tao.peng@linux.alibaba.com>
Subject: [PATCH v2 4/4] erofs-utils: support chunk-based uncompressed files
Date: Thu, 19 Aug 2021 14:57:23 +0800 [thread overview]
Message-ID: <20210819065723.189579-1-hsiangkao@linux.alibaba.com> (raw)
In-Reply-To: <20210818070316.1970-4-hsiangkao@linux.alibaba.com>
Add mkfs support to new chunk-based uncompressed files.
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
---
changes since v1:
- update the member order of struct erofs_inode_chunk_index in sync
with the kernel side.
include/erofs/blobchunk.h | 18 ++++
include/erofs/config.h | 2 +-
include/erofs/internal.h | 1 +
include/erofs/io.h | 2 +
include/erofs_fs.h | 42 +++++++-
lib/Makefile.am | 2 +-
lib/blobchunk.c | 200 ++++++++++++++++++++++++++++++++++++++
lib/inode.c | 35 +++++--
lib/io.c | 2 +-
mkfs/main.c | 39 ++++++++
10 files changed, 330 insertions(+), 13 deletions(-)
create mode 100644 include/erofs/blobchunk.h
create mode 100644 lib/blobchunk.c
diff --git a/include/erofs/blobchunk.h b/include/erofs/blobchunk.h
new file mode 100644
index 000000000000..b418227e0ef8
--- /dev/null
+++ b/include/erofs/blobchunk.h
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * erofs-utils/lib/blobchunk.h
+ *
+ * Copyright (C) 2021, Alibaba Cloud
+ */
+#ifndef __EROFS_BLOBCHUNK_H
+#define __EROFS_BLOBCHUNK_H
+
+#include "erofs/internal.h"
+
+int erofs_blob_write_chunk_indexes(struct erofs_inode *inode, erofs_off_t off);
+int erofs_blob_write_chunked_file(struct erofs_inode *inode);
+int erofs_blob_remap(void);
+void erofs_blob_exit(void);
+int erofs_blob_init(void);
+
+#endif
diff --git a/include/erofs/config.h b/include/erofs/config.h
index 8124f3b36baf..0cd6a359e216 100644
--- a/include/erofs/config.h
+++ b/include/erofs/config.h
@@ -44,6 +44,7 @@ struct erofs_configure {
bool c_random_pclusterblks;
#endif
char c_timeinherit;
+ char c_chunkbits;
bool c_noinline_data;
#ifdef HAVE_LIBSELINUX
@@ -57,7 +58,6 @@ struct erofs_configure {
int c_force_inodeversion;
/* < 0, xattr disabled and INT_MAX, always use inline xattrs */
int c_inline_xattr_tolerance;
-
u32 c_physical_clusterblks;
u32 c_max_decompressed_extent_bytes;
u64 c_unix_timestamp;
diff --git a/include/erofs/internal.h b/include/erofs/internal.h
index 5583861b766d..12274769c10d 100644
--- a/include/erofs/internal.h
+++ b/include/erofs/internal.h
@@ -160,6 +160,7 @@ struct erofs_inode {
union {
void *compressmeta;
+ void *chunkindexes;
struct {
uint16_t z_advise;
uint8_t z_algorithmtype[2];
diff --git a/include/erofs/io.h b/include/erofs/io.h
index 5b685d217a0f..226509ff33ca 100644
--- a/include/erofs/io.h
+++ b/include/erofs/io.h
@@ -27,6 +27,8 @@ int dev_fsync(void);
int dev_resize(erofs_blk_t nblocks);
u64 dev_length(void);
+extern int erofs_devfd;
+
int erofs_copy_file_range(int fd_in, erofs_off_t *off_in,
int fd_out, erofs_off_t *off_out,
size_t length);
diff --git a/include/erofs_fs.h b/include/erofs_fs.h
index 18fc1820c58c..4d40010144a7 100644
--- a/include/erofs_fs.h
+++ b/include/erofs_fs.h
@@ -5,7 +5,7 @@
*
* Copyright (C) 2017-2018 HUAWEI, Inc.
* http://www.huawei.com/
- * Created by Gao Xiang <gaoxiang25@huawei.com>
+ * Copyright (C) 2021, Alibaba Cloud
*/
#ifndef __EROFS_FS_H
#define __EROFS_FS_H
@@ -22,10 +22,12 @@
#define EROFS_FEATURE_INCOMPAT_LZ4_0PADDING 0x00000001
#define EROFS_FEATURE_INCOMPAT_COMPR_CFGS 0x00000002
#define EROFS_FEATURE_INCOMPAT_BIG_PCLUSTER 0x00000002
+#define EROFS_FEATURE_INCOMPAT_CHUNKED_FILE 0x00000004
#define EROFS_ALL_FEATURE_INCOMPAT \
(EROFS_FEATURE_INCOMPAT_LZ4_0PADDING | \
EROFS_FEATURE_INCOMPAT_COMPR_CFGS | \
- EROFS_FEATURE_INCOMPAT_BIG_PCLUSTER)
+ EROFS_FEATURE_INCOMPAT_BIG_PCLUSTER | \
+ EROFS_FEATURE_INCOMPAT_CHUNKED_FILE)
#define EROFS_SB_EXTSLOT_SIZE 16
@@ -67,13 +69,16 @@ struct erofs_super_block {
* inode, [xattrs], last_inline_data, ... | ... | no-holed data
* 3 - inode compression D:
* inode, [xattrs], map_header, extents ... | ...
- * 4~7 - reserved
+ * 4 - inode chunk-based E:
+ * inode, [xattrs], chunk indexes ... | ...
+ * 5~7 - reserved
*/
enum {
EROFS_INODE_FLAT_PLAIN = 0,
EROFS_INODE_FLAT_COMPRESSION_LEGACY = 1,
EROFS_INODE_FLAT_INLINE = 2,
EROFS_INODE_FLAT_COMPRESSION = 3,
+ EROFS_INODE_CHUNK_BASED = 4,
EROFS_INODE_DATALAYOUT_MAX
};
@@ -93,6 +98,16 @@ static inline bool erofs_inode_is_data_compressed(unsigned int datamode)
#define EROFS_I_ALL \
((1 << (EROFS_I_DATALAYOUT_BIT + EROFS_I_DATALAYOUT_BITS)) - 1)
+/* indicate chunk blkbits, thus 'chunksize = blocksize << chunk blkbits' */
+#define EROFS_CHUNK_FORMAT_BLKBITS 0x001F
+/* with chunk indexes or just a 4-byte blkaddr array */
+#define EROFS_CHUNK_FORMAT_INDEXES 0x0020
+
+struct erofs_inode_chunk_info {
+ __le16 format; /* chunk blkbits */
+ __le16 reserved;
+};
+
/* 32-byte reduced form of an ondisk inode */
struct erofs_inode_compact {
__le16 i_format; /* inode format hints */
@@ -110,6 +125,9 @@ struct erofs_inode_compact {
/* for device files, used to indicate old/new device # */
__le32 rdev;
+
+ /* for chunk-based files, it contains the summary info */
+ struct erofs_inode_chunk_info c;
} i_u;
__le32 i_ino; /* only used for 32-bit stat compatibility */
__le16 i_uid;
@@ -138,6 +156,9 @@ struct erofs_inode_extended {
/* for device files, used to indicate old/new device # */
__le32 rdev;
+
+ /* for chunk-based files, it contains the summary info */
+ struct erofs_inode_chunk_info c;
} i_u;
/* only used for 32-bit stat compatibility */
@@ -207,6 +228,15 @@ static inline unsigned int erofs_xattr_entry_size(struct erofs_xattr_entry *e)
e->e_name_len + le16_to_cpu(e->e_value_size));
}
+/* represent a zeroed chunk (hole) */
+#define EROFS_NULL_ADDR -1
+
+struct erofs_inode_chunk_index {
+ __le16 advise; /* always 0, don't care for now */
+ __le16 device_id; /* back-end storage id, always 0 for now */
+ __le32 blkaddr; /* start block address of this inode chunk */
+};
+
/* maximum supported size of a physical compression cluster */
#define Z_EROFS_PCLUSTER_MAX_SIZE (1024 * 1024)
@@ -351,13 +381,17 @@ static inline void erofs_check_ondisk_layout_definitions(void)
BUILD_BUG_ON(sizeof(struct erofs_inode_extended) != 64);
BUILD_BUG_ON(sizeof(struct erofs_xattr_ibody_header) != 12);
BUILD_BUG_ON(sizeof(struct erofs_xattr_entry) != 4);
+ BUILD_BUG_ON(sizeof(struct erofs_inode_chunk_info) != 4);
+ BUILD_BUG_ON(sizeof(struct erofs_inode_chunk_index) != 8);
BUILD_BUG_ON(sizeof(struct z_erofs_map_header) != 8);
BUILD_BUG_ON(sizeof(struct z_erofs_vle_decompressed_index) != 8);
BUILD_BUG_ON(sizeof(struct erofs_dirent) != 12);
+ /* keep in sync between 2 index structures for better extendibility */
+ BUILD_BUG_ON(sizeof(struct erofs_inode_chunk_index) !=
+ sizeof(struct z_erofs_vle_decompressed_index));
BUILD_BUG_ON(BIT(Z_EROFS_VLE_DI_CLUSTER_TYPE_BITS) <
Z_EROFS_VLE_CLUSTER_TYPE_MAX - 1);
}
#endif
-
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 8e4ed37f9c70..ea84e0edd628 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -22,7 +22,7 @@ noinst_HEADERS = $(top_srcdir)/include/erofs_fs.h \
noinst_HEADERS += compressor.h
liberofs_la_SOURCES = config.c io.c cache.c super.c inode.c xattr.c exclude.c \
namei.c data.c compress.c compressor.c zmap.c decompress.c \
- hashmap.c sha256.c
+ hashmap.c sha256.c blobchunk.c
liberofs_la_CFLAGS = -Wall -Werror -I$(top_srcdir)/include
if ENABLE_LZ4
liberofs_la_CFLAGS += ${LZ4_CFLAGS}
diff --git a/lib/blobchunk.c b/lib/blobchunk.c
new file mode 100644
index 000000000000..6ff1c1373e32
--- /dev/null
+++ b/lib/blobchunk.c
@@ -0,0 +1,200 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * erofs-utils/lib/blobchunk.c
+ *
+ * Copyright (C) 2021, Alibaba Cloud
+ */
+#define _GNU_SOURCE
+#include "erofs/hashmap.h"
+#include "erofs/blobchunk.h"
+#include "erofs/cache.h"
+#include "erofs/io.h"
+#include <unistd.h>
+
+void erofs_sha256(const unsigned char *in, unsigned long in_size,
+ unsigned char out[32]);
+
+struct erofs_blobchunk {
+ struct hashmap_entry ent;
+ char sha256[32];
+ unsigned int chunksize;
+ erofs_blk_t blkaddr;
+};
+
+static struct hashmap blob_hashmap;
+static FILE *blobfile;
+static erofs_blk_t remapped_base;
+
+static struct erofs_blobchunk *erofs_blob_getchunk(int fd,
+ unsigned int chunksize)
+{
+ static u8 zeroed[EROFS_BLKSIZ];
+ u8 *chunkdata, sha256[32];
+ int ret;
+ unsigned int hash;
+ erofs_off_t blkpos;
+ struct erofs_blobchunk *chunk;
+
+ chunkdata = malloc(chunksize);
+ if (!chunkdata)
+ return ERR_PTR(-ENOMEM);
+
+ ret = read(fd, chunkdata, chunksize);
+ if (ret < chunksize) {
+ chunk = ERR_PTR(-EIO);
+ goto out;
+ }
+ erofs_sha256(chunkdata, chunksize, sha256);
+ hash = memhash(sha256, sizeof(sha256));
+ chunk = hashmap_get_from_hash(&blob_hashmap, hash, sha256);
+ if (chunk) {
+ DBG_BUGON(chunksize != chunk->chunksize);
+ goto out;
+ }
+ chunk = malloc(sizeof(struct erofs_blobchunk));
+ if (!chunk) {
+ chunk = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+
+ chunk->chunksize = chunksize;
+ blkpos = ftell(blobfile);
+ DBG_BUGON(erofs_blkoff(blkpos));
+ chunk->blkaddr = erofs_blknr(blkpos);
+ memcpy(chunk->sha256, sha256, sizeof(sha256));
+ hashmap_entry_init(&chunk->ent, hash);
+ hashmap_add(&blob_hashmap, chunk);
+
+ erofs_dbg("Writing chunk (%u bytes) to %u", chunksize, chunk->blkaddr);
+ ret = fwrite(chunkdata, chunksize, 1, blobfile);
+ if (ret == 1 && erofs_blkoff(chunksize))
+ ret = fwrite(zeroed, EROFS_BLKSIZ - erofs_blkoff(chunksize),
+ 1, blobfile);
+ if (ret < 1) {
+ struct hashmap_entry key;
+
+ hashmap_entry_init(&key, hash);
+ hashmap_remove(&blob_hashmap, &key, sha256);
+ chunk = ERR_PTR(-ENOSPC);
+ goto out;
+ }
+out:
+ free(chunkdata);
+ return chunk;
+}
+
+static int erofs_blob_hashmap_cmp(const void *a, const void *b,
+ const void *key)
+{
+ const struct erofs_blobchunk *ec1 =
+ container_of((struct hashmap_entry *)a,
+ struct erofs_blobchunk, ent);
+ const struct erofs_blobchunk *ec2 =
+ container_of((struct hashmap_entry *)b,
+ struct erofs_blobchunk, ent);
+
+ return memcmp(ec1->sha256, key ? key : ec2->sha256,
+ sizeof(ec1->sha256));
+}
+
+int erofs_blob_write_chunk_indexes(struct erofs_inode *inode,
+ erofs_off_t off)
+{
+ struct erofs_inode_chunk_index idx = {0};
+ unsigned int pos;
+
+ for (pos = 0; pos < inode->extent_isize;
+ pos += sizeof(struct erofs_inode_chunk_index)) {
+ struct erofs_blobchunk *chunk;
+
+ chunk = *(void **)(inode->chunkindexes + pos);
+ idx.blkaddr = chunk->blkaddr + remapped_base;
+ memcpy(inode->chunkindexes + pos, &idx, sizeof(idx));
+ }
+ off = roundup(off, sizeof(struct erofs_inode_chunk_index));
+
+ return dev_write(inode->chunkindexes, off, inode->extent_isize);
+}
+
+int erofs_blob_write_chunked_file(struct erofs_inode *inode)
+{
+ unsigned int chunksize = 1 << cfg.c_chunkbits;
+ unsigned int count = DIV_ROUND_UP(inode->i_size, chunksize);
+ struct erofs_inode_chunk_index *idx;
+ erofs_off_t pos;
+ unsigned int len;
+ int fd, ret;
+
+ inode->extent_isize = count * sizeof(struct erofs_inode_chunk_index);
+ idx = malloc(inode->extent_isize);
+ if (!idx)
+ return -ENOMEM;
+ inode->chunkindexes = idx;
+
+ fd = open(inode->i_srcpath, O_RDONLY | O_BINARY);
+ if (fd < 0) {
+ ret = -errno;
+ goto err;
+ }
+
+ for (pos = 0; pos < inode->i_size; pos += len) {
+ struct erofs_blobchunk *chunk;
+
+ len = min_t(unsigned int, inode->i_size - pos, chunksize);
+ chunk = erofs_blob_getchunk(fd, len);
+ if (IS_ERR(chunk)) {
+ ret = PTR_ERR(chunk);
+ goto err;
+ }
+ *(void **)idx++ = chunk;
+ }
+ inode->datalayout = EROFS_INODE_CHUNK_BASED;
+ close(fd);
+ return 0;
+err:
+ free(inode->chunkindexes);
+ inode->chunkindexes = NULL;
+ return ret;
+}
+
+int erofs_blob_remap(void)
+{
+ struct erofs_buffer_head *bh;
+ ssize_t length;
+ erofs_off_t pos_in, pos_out;
+ int ret;
+
+ fflush(blobfile);
+ length = ftell(blobfile);
+ bh = erofs_balloc(DATA, length, 0, 0);
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
+
+ erofs_mapbh(bh->block);
+ pos_out = erofs_btell(bh, false);
+ pos_in = 0;
+ remapped_base = erofs_blknr(pos_out);
+ ret = erofs_copy_file_range(fileno(blobfile), &pos_in,
+ erofs_devfd, &pos_out, length);
+ bh->op = &erofs_skip_write_bhops;
+ erofs_bdrop(bh, false);
+ return ret < length ? -EIO : 0;
+}
+
+void erofs_blob_exit(void)
+{
+ if (blobfile)
+ fclose(blobfile);
+
+ hashmap_free(&blob_hashmap, 1);
+}
+
+int erofs_blob_init(void)
+{
+ blobfile = tmpfile64();
+ if (!blobfile)
+ return -ENOMEM;
+
+ hashmap_init(&blob_hashmap, erofs_blob_hashmap_cmp, 0);
+ return 0;
+}
diff --git a/lib/inode.c b/lib/inode.c
index 6871d2be2d49..ac4b833388a8 100644
--- a/lib/inode.c
+++ b/lib/inode.c
@@ -25,6 +25,7 @@
#include "erofs/xattr.h"
#include "erofs/exclude.h"
#include "erofs/block_list.h"
+#include "erofs/blobchunk.h"
#define S_SHIFT 12
static unsigned char erofs_ftype_by_mode[S_IFMT >> S_SHIFT] = {
@@ -386,6 +387,9 @@ int erofs_write_file(struct erofs_inode *inode)
return 0;
}
+ if (cfg.c_chunkbits)
+ return erofs_blob_write_chunked_file(inode);
+
if (cfg.c_compr_alg_master && erofs_file_is_compressible(inode)) {
ret = erofs_write_compressed_file(inode);
@@ -439,6 +443,11 @@ static bool erofs_bh_flush_write_inode(struct erofs_buffer_head *bh)
if (is_inode_layout_compression(inode))
u.dic.i_u.compressed_blocks =
cpu_to_le32(inode->u.i_blocks);
+ else if (inode->datalayout ==
+ EROFS_INODE_CHUNK_BASED)
+ u.dic.i_u.c.format = (cfg.c_chunkbits -
+ LOG_BLOCK_SIZE) |
+ EROFS_CHUNK_FORMAT_INDEXES;
else
u.dic.i_u.raw_blkaddr =
cpu_to_le32(inode->u.i_blkaddr);
@@ -472,6 +481,11 @@ static bool erofs_bh_flush_write_inode(struct erofs_buffer_head *bh)
if (is_inode_layout_compression(inode))
u.die.i_u.compressed_blocks =
cpu_to_le32(inode->u.i_blocks);
+ else if (inode->datalayout ==
+ EROFS_INODE_CHUNK_BASED)
+ u.die.i_u.c.format = (cfg.c_chunkbits -
+ LOG_BLOCK_SIZE) |
+ EROFS_CHUNK_FORMAT_INDEXES;
else
u.die.i_u.raw_blkaddr =
cpu_to_le32(inode->u.i_blkaddr);
@@ -504,12 +518,19 @@ static bool erofs_bh_flush_write_inode(struct erofs_buffer_head *bh)
}
if (inode->extent_isize) {
- /* write compression metadata */
- off = Z_EROFS_VLE_EXTENT_ALIGN(off);
- ret = dev_write(inode->compressmeta, off, inode->extent_isize);
- if (ret)
- return false;
- free(inode->compressmeta);
+ if (inode->datalayout == EROFS_INODE_CHUNK_BASED) {
+ ret = erofs_blob_write_chunk_indexes(inode, off);
+ if (ret)
+ return false;
+ } else {
+ /* write compression metadata */
+ off = Z_EROFS_VLE_EXTENT_ALIGN(off);
+ ret = dev_write(inode->compressmeta, off,
+ inode->extent_isize);
+ if (ret)
+ return false;
+ free(inode->compressmeta);
+ }
}
inode->bh = NULL;
@@ -564,6 +585,8 @@ static int erofs_prepare_inode_buffer(struct erofs_inode *inode)
if (is_inode_layout_compression(inode))
goto noinline;
+ if (inode->datalayout == EROFS_INODE_CHUNK_BASED)
+ goto noinline;
if (cfg.c_noinline_data && S_ISREG(inode->i_mode)) {
inode->datalayout = EROFS_INODE_FLAT_PLAIN;
diff --git a/lib/io.c b/lib/io.c
index e4083bb53c27..d0d1a3695b6b 100644
--- a/lib/io.c
+++ b/lib/io.c
@@ -26,7 +26,7 @@
#include "erofs/print.h"
static const char *erofs_devname;
-static int erofs_devfd = -1;
+int erofs_devfd = -1;
static u64 erofs_devsz;
int dev_get_blkdev_size(int fd, u64 *bytes)
diff --git a/mkfs/main.c b/mkfs/main.c
index 10fe14d7a722..aa634e9263b4 100644
--- a/mkfs/main.c
+++ b/mkfs/main.c
@@ -23,6 +23,8 @@
#include "erofs/xattr.h"
#include "erofs/exclude.h"
#include "erofs/block_list.h"
+#include "erofs/hashtable.h"
+#include "erofs/blobchunk.h"
#ifdef HAVE_LIBUUID
#include <uuid.h>
@@ -44,6 +46,7 @@ static struct option long_options[] = {
{"random-pclusterblks", no_argument, NULL, 8},
#endif
{"max-extent-bytes", required_argument, NULL, 9},
+ {"chunksize", required_argument, NULL, 256},
#ifdef WITH_ANDROID
{"mount-point", required_argument, NULL, 10},
{"product-out", required_argument, NULL, 11},
@@ -79,6 +82,7 @@ static void usage(void)
#ifdef HAVE_LIBUUID
" -UX use a given filesystem UUID\n"
#endif
+ " --chunksize=X set chunk size to X bytes and use chunk-based files instead\n"
" --exclude-path=X avoid including file X (X = exact literal path)\n"
" --exclude-regex=X avoid including files that match X (X = regular expression)\n"
#ifdef HAVE_LIBSELINUX
@@ -316,6 +320,24 @@ static int mkfs_parse_options_cfg(int argc, char *argv[])
}
cfg.c_physical_clusterblks = i / EROFS_BLKSIZ;
break;
+ case 256:
+ i = strtol(optarg, &endptr, 0);
+ if (*endptr != '\0') {
+ erofs_err("invalid chunksize %s", optarg);
+ return -EINVAL;
+ }
+ cfg.c_chunkbits = ilog2(i);
+ if ((1 << cfg.c_chunkbits) != i) {
+ erofs_err("chunksize %s must be a power of two",
+ optarg);
+ return -EINVAL;
+ }
+ if (i < EROFS_BLKSIZ) {
+ erofs_err("chunksize %s must be larger than block size",
+ optarg);
+ return -EINVAL;
+ }
+ break;
case 1:
usage();
@@ -523,6 +545,12 @@ int main(int argc, char **argv)
return 1;
}
+ if (cfg.c_chunkbits) {
+ err = erofs_blob_init();
+ if (err)
+ return 1;
+ }
+
err = lstat64(cfg.c_src_path, &st);
if (err)
return 1;
@@ -610,6 +638,13 @@ int main(int argc, char **argv)
root_nid = erofs_lookupnid(root_inode);
erofs_iput(root_inode);
+ if (cfg.c_chunkbits) {
+ erofs_info("total metadata: %u blocks", erofs_mapbh(NULL));
+ err = erofs_blob_remap();
+ if (err)
+ goto exit;
+ }
+
err = erofs_mkfs_update_super_block(sb_bh, root_nid, &nblocks);
if (err)
goto exit;
@@ -629,6 +664,10 @@ exit:
#endif
dev_close();
erofs_cleanup_exclude_rules();
+
+ if (cfg.c_chunkbits)
+ erofs_blob_exit();
+
erofs_exit_configure();
if (err) {
--
2.24.4
prev parent reply other threads:[~2021-08-19 6:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 7:03 [PATCH 1/4] erofs-utils: introduce hashmap from git source Gao Xiang
2021-08-18 7:03 ` [PATCH 2/4] erofs-utils: introduce sha256 Gao Xiang
2021-08-18 7:03 ` [PATCH 3/4] erofs-utils: introduce copy_file_range Gao Xiang
2021-08-18 7:03 ` [PATCH 4/4] erofs-utils: support chunk-based uncompressed files Gao Xiang
2021-08-19 6:57 ` Gao Xiang [this message]
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