Opt_compress_algorithm,
Opt_compress_log_size,
Opt_compress_extension,
+ Opt_nocompress_extension,
Opt_compress_chksum,
Opt_compress_mode,
+ Opt_compress_cache,
Opt_atgc,
Opt_gc_merge,
Opt_nogc_merge,
{Opt_compress_algorithm, "compress_algorithm=%s"},
{Opt_compress_log_size, "compress_log_size=%u"},
{Opt_compress_extension, "compress_extension=%s"},
+ {Opt_nocompress_extension, "nocompress_extension=%s"},
{Opt_compress_chksum, "compress_chksum"},
{Opt_compress_mode, "compress_mode=%s"},
+ {Opt_compress_cache, "compress_cache"},
{Opt_atgc, "atgc"},
{Opt_gc_merge, "gc_merge"},
{Opt_nogc_merge, "nogc_merge"},
return 0;
}
+
+struct kmem_cache *f2fs_cf_name_slab;
+static int __init f2fs_create_casefold_cache(void)
+{
+ f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name",
+ F2FS_NAME_LEN);
+ if (!f2fs_cf_name_slab)
+ return -ENOMEM;
+ return 0;
+}
+
+static void f2fs_destroy_casefold_cache(void)
+{
+ kmem_cache_destroy(f2fs_cf_name_slab);
+}
+#else
+static int __init f2fs_create_casefold_cache(void) { return 0; }
+static void f2fs_destroy_casefold_cache(void) { }
#endif
static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
}
#ifdef CONFIG_F2FS_FS_COMPRESSION
+/*
+ * 1. The same extension name cannot not appear in both compress and non-compress extension
+ * at the same time.
+ * 2. If the compress extension specifies all files, the types specified by the non-compress
+ * extension will be treated as special cases and will not be compressed.
+ * 3. Don't allow the non-compress extension specifies all files.
+ */
+static int f2fs_test_compress_extension(struct f2fs_sb_info *sbi)
+{
+ unsigned char (*ext)[F2FS_EXTENSION_LEN];
+ unsigned char (*noext)[F2FS_EXTENSION_LEN];
+ int ext_cnt, noext_cnt, index = 0, no_index = 0;
+
+ ext = F2FS_OPTION(sbi).extensions;
+ ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
+ noext = F2FS_OPTION(sbi).noextensions;
+ noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
+
+ if (!noext_cnt)
+ return 0;
+
+ for (no_index = 0; no_index < noext_cnt; no_index++) {
+ if (!strcasecmp("*", noext[no_index])) {
+ f2fs_info(sbi, "Don't allow the nocompress extension specifies all files");
+ return -EINVAL;
+ }
+ for (index = 0; index < ext_cnt; index++) {
+ if (!strcasecmp(ext[index], noext[no_index])) {
+ f2fs_info(sbi, "Don't allow the same extension %s appear in both compress and nocompress extension",
+ ext[index]);
+ return -EINVAL;
+ }
+ }
+ }
+ return 0;
+}
+
#ifdef CONFIG_F2FS_FS_LZ4
static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str)
{
substring_t args[MAX_OPT_ARGS];
#ifdef CONFIG_F2FS_FS_COMPRESSION
unsigned char (*ext)[F2FS_EXTENSION_LEN];
- int ext_cnt;
+ unsigned char (*noext)[F2FS_EXTENSION_LEN];
+ int ext_cnt, noext_cnt;
#endif
char *p, *name;
int arg = 0;
int ret;
if (!options)
- return 0;
+ goto default_check;
while ((p = strsep(&options, ",")) != NULL) {
int token;
F2FS_OPTION(sbi).compress_ext_cnt++;
kfree(name);
break;
+ case Opt_nocompress_extension:
+ if (!f2fs_sb_has_compression(sbi)) {
+ f2fs_info(sbi, "Image doesn't support compression");
+ break;
+ }
+ name = match_strdup(&args[0]);
+ if (!name)
+ return -ENOMEM;
+
+ noext = F2FS_OPTION(sbi).noextensions;
+ noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
+
+ if (strlen(name) >= F2FS_EXTENSION_LEN ||
+ noext_cnt >= COMPRESS_EXT_NUM) {
+ f2fs_err(sbi,
+ "invalid extension length/number");
+ kfree(name);
+ return -EINVAL;
+ }
+
+ strcpy(noext[noext_cnt], name);
+ F2FS_OPTION(sbi).nocompress_ext_cnt++;
+ kfree(name);
+ break;
case Opt_compress_chksum:
F2FS_OPTION(sbi).compress_chksum = true;
break;
}
kfree(name);
break;
+ case Opt_compress_cache:
+ set_opt(sbi, COMPRESS_CACHE);
+ break;
#else
case Opt_compress_algorithm:
case Opt_compress_log_size:
case Opt_compress_extension:
+ case Opt_nocompress_extension:
case Opt_compress_chksum:
case Opt_compress_mode:
+ case Opt_compress_cache:
f2fs_info(sbi, "compression options not supported");
break;
#endif
return -EINVAL;
}
}
+default_check:
#ifdef CONFIG_QUOTA
if (f2fs_check_quota_options(sbi))
return -EINVAL;
}
#endif
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (f2fs_test_compress_extension(sbi)) {
+ f2fs_err(sbi, "invalid compress or nocompress extension");
+ return -EINVAL;
+ }
+#endif
+
if (F2FS_IO_SIZE_BITS(sbi) && !f2fs_lfs_mode(sbi)) {
f2fs_err(sbi, "Should set mode=lfs with %uKB-sized IO",
F2FS_IO_SIZE_KB(sbi));
}
if (test_opt(sbi, DISABLE_CHECKPOINT) && f2fs_lfs_mode(sbi)) {
- f2fs_err(sbi, "LFS not compatible with checkpoint=disable\n");
+ f2fs_err(sbi, "LFS not compatible with checkpoint=disable");
return -EINVAL;
}
*/
if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
+
+ if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
+ f2fs_err(sbi, "Allow to mount readonly mode only");
+ return -EROFS;
+ }
return 0;
}
f2fs_bug_on(sbi, sbi->fsync_node_num);
+ f2fs_destroy_compress_inode(sbi);
+
iput(sbi->node_inode);
sbi->node_inode = NULL;
F2FS_OPTION(sbi).extensions[i]);
}
+ for (i = 0; i < F2FS_OPTION(sbi).nocompress_ext_cnt; i++) {
+ seq_printf(seq, ",nocompress_extension=%s",
+ F2FS_OPTION(sbi).noextensions[i]);
+ }
+
if (F2FS_OPTION(sbi).compress_chksum)
seq_puts(seq, ",compress_chksum");
seq_printf(seq, ",compress_mode=%s", "fs");
else if (F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER)
seq_printf(seq, ",compress_mode=%s", "user");
+
+ if (test_opt(sbi, COMPRESS_CACHE))
+ seq_puts(seq, ",compress_cache");
}
#endif
static void default_options(struct f2fs_sb_info *sbi)
{
/* init some FS parameters */
- F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
+ if (f2fs_sb_has_readonly(sbi))
+ F2FS_OPTION(sbi).active_logs = NR_CURSEG_RO_TYPE;
+ else
+ F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
+
F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
bool disable_checkpoint = test_opt(sbi, DISABLE_CHECKPOINT);
bool no_io_align = !F2FS_IO_ALIGNED(sbi);
bool no_atgc = !test_opt(sbi, ATGC);
+ bool no_compress_cache = !test_opt(sbi, COMPRESS_CACHE);
bool checkpoint_changed;
#ifdef CONFIG_QUOTA
int i, j;
if (f2fs_readonly(sb) && (*flags & SB_RDONLY))
goto skip;
+ if (f2fs_sb_has_readonly(sbi) && !(*flags & SB_RDONLY)) {
+ err = -EROFS;
+ goto restore_opts;
+ }
+
#ifdef CONFIG_QUOTA
if (!f2fs_readonly(sb) && (*flags & SB_RDONLY)) {
err = dquot_suspend(sb, -1);
goto restore_opts;
}
+ if (no_compress_cache == !!test_opt(sbi, COMPRESS_CACHE)) {
+ err = -EINVAL;
+ f2fs_warn(sbi, "switch compress_cache option is not allowed");
+ goto restore_opts;
+ }
+
if ((*flags & SB_RDONLY) && test_opt(sbi, DISABLE_CHECKPOINT)) {
err = -EINVAL;
f2fs_warn(sbi, "disabling checkpoint not compatible with read-only");
ovp_segments = le32_to_cpu(ckpt->overprov_segment_count);
reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count);
- if (unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
+ if (!f2fs_sb_has_readonly(sbi) &&
+ unlikely(fsmeta < F2FS_MIN_META_SEGMENTS ||
ovp_segments == 0 || reserved_segments == 0)) {
f2fs_err(sbi, "Wrong layout: check mkfs.f2fs version");
return 1;
}
-
user_block_count = le64_to_cpu(ckpt->user_block_count);
- segment_count_main = le32_to_cpu(raw_super->segment_count_main);
+ segment_count_main = le32_to_cpu(raw_super->segment_count_main) +
+ (f2fs_sb_has_readonly(sbi) ? 1 : 0);
log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
if (!user_block_count || user_block_count >=
segment_count_main << log_blocks_per_seg) {
if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
return 1;
+
+ if (f2fs_sb_has_readonly(sbi))
+ goto check_data;
+
for (j = i + 1; j < NR_CURSEG_NODE_TYPE; j++) {
if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
le32_to_cpu(ckpt->cur_node_segno[j])) {
}
}
}
+check_data:
for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
if (le32_to_cpu(ckpt->cur_data_segno[i]) >= main_segs ||
le16_to_cpu(ckpt->cur_data_blkoff[i]) >= blocks_per_seg)
return 1;
+
+ if (f2fs_sb_has_readonly(sbi))
+ goto skip_cross;
+
for (j = i + 1; j < NR_CURSEG_DATA_TYPE; j++) {
if (le32_to_cpu(ckpt->cur_data_segno[i]) ==
le32_to_cpu(ckpt->cur_data_segno[j])) {
}
}
}
-
+skip_cross:
sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
#ifdef CONFIG_BLK_DEV_ZONED
if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
!f2fs_sb_has_blkzoned(sbi)) {
- f2fs_err(sbi, "Zoned block device feature not enabled\n");
+ f2fs_err(sbi, "Zoned block device feature not enabled");
return -EINVAL;
}
if (bdev_zoned_model(FDEV(i).bdev) != BLK_ZONED_NONE) {
goto free_node_inode;
}
- err = f2fs_register_sysfs(sbi);
+ err = f2fs_init_compress_inode(sbi);
if (err)
goto free_root_inode;
+ err = f2fs_register_sysfs(sbi);
+ if (err)
+ goto free_compress_inode;
+
#ifdef CONFIG_QUOTA
/* Enable quota usage during mount */
if (f2fs_sb_has_quota_ino(sbi) && !f2fs_readonly(sb)) {
/* evict some inodes being cached by GC */
evict_inodes(sb);
f2fs_unregister_sysfs(sbi);
+free_compress_inode:
+ f2fs_destroy_compress_inode(sbi);
free_root_inode:
dput(sb->s_root);
sb->s_root = NULL;
f2fs_stop_gc_thread(sbi);
f2fs_stop_discard_thread(sbi);
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ /*
+ * latter evict_inode() can bypass checking and invalidating
+ * compress inode cache.
+ */
+ if (test_opt(sbi, COMPRESS_CACHE))
+ truncate_inode_pages_final(COMPRESS_MAPPING(sbi));
+#endif
+
if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) ||
!is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) {
struct cp_control cpc = {
err = f2fs_create_checkpoint_caches();
if (err)
goto free_segment_manager_caches;
- err = f2fs_create_extent_cache();
+ err = f2fs_create_recovery_cache();
if (err)
goto free_checkpoint_caches;
+ err = f2fs_create_extent_cache();
+ if (err)
+ goto free_recovery_cache;
err = f2fs_create_garbage_collection_cache();
if (err)
goto free_extent_cache;
err = f2fs_init_compress_cache();
if (err)
goto free_compress_mempool;
+ err = f2fs_create_casefold_cache();
+ if (err)
+ goto free_compress_cache;
return 0;
+free_compress_cache:
+ f2fs_destroy_compress_cache();
free_compress_mempool:
f2fs_destroy_compress_mempool();
free_bioset:
f2fs_destroy_garbage_collection_cache();
free_extent_cache:
f2fs_destroy_extent_cache();
+free_recovery_cache:
+ f2fs_destroy_recovery_cache();
free_checkpoint_caches:
f2fs_destroy_checkpoint_caches();
free_segment_manager_caches:
static void __exit exit_f2fs_fs(void)
{
+ f2fs_destroy_casefold_cache();
f2fs_destroy_compress_cache();
f2fs_destroy_compress_mempool();
f2fs_destroy_bioset();
f2fs_exit_sysfs();
f2fs_destroy_garbage_collection_cache();
f2fs_destroy_extent_cache();
+ f2fs_destroy_recovery_cache();
f2fs_destroy_checkpoint_caches();
f2fs_destroy_segment_manager_caches();
f2fs_destroy_node_manager_caches();
MODULE_AUTHOR("Samsung Electronics's Praesto Team");
MODULE_DESCRIPTION("Flash Friendly File System");
MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: crc32");
projects / linux-2.6-microblaze.git / blobdiff