/* data type for filesystem-wide blocks number */
typedef u32 erofs_blk_t;
-struct erofs_fs_context {
+struct erofs_mount_opts {
#ifdef CONFIG_EROFS_FS_ZIP
/* current strategy of how to use managed cache */
unsigned char cache_strategy;
unsigned int mount_opt;
};
+struct erofs_fs_context {
+ struct erofs_mount_opts opt;
+};
+
/* all filesystem-wide lz4 configurations */
struct erofs_sb_lz4_info {
/* # of pages needed for EROFS lz4 rolling decompression */
};
struct erofs_sb_info {
+ struct erofs_mount_opts opt; /* options */
+
#ifdef CONFIG_EROFS_FS_ZIP
/* list for all registered superblocks, mainly for shrinker */
struct list_head list;
u8 volume_name[16]; /* volume name */
u32 feature_compat;
u32 feature_incompat;
-
- struct erofs_fs_context ctx; /* options */
};
#define EROFS_SB(sb) ((struct erofs_sb_info *)(sb)->s_fs_info)
#define EROFS_MOUNT_DAX_ALWAYS 0x00000040
#define EROFS_MOUNT_DAX_NEVER 0x00000080
-#define clear_opt(ctx, option) ((ctx)->mount_opt &= ~EROFS_MOUNT_##option)
-#define set_opt(ctx, option) ((ctx)->mount_opt |= EROFS_MOUNT_##option)
-#define test_opt(ctx, option) ((ctx)->mount_opt & EROFS_MOUNT_##option)
+#define clear_opt(opt, option) ((opt)->mount_opt &= ~EROFS_MOUNT_##option)
+#define set_opt(opt, option) ((opt)->mount_opt |= EROFS_MOUNT_##option)
+#define test_opt(opt, option) ((opt)->mount_opt & EROFS_MOUNT_##option)
enum {
EROFS_ZIP_CACHE_DISABLED,
static void erofs_default_options(struct erofs_fs_context *ctx)
{
#ifdef CONFIG_EROFS_FS_ZIP
- ctx->cache_strategy = EROFS_ZIP_CACHE_READAROUND;
- ctx->max_sync_decompress_pages = 3;
- ctx->readahead_sync_decompress = false;
+ ctx->opt.cache_strategy = EROFS_ZIP_CACHE_READAROUND;
+ ctx->opt.max_sync_decompress_pages = 3;
+ ctx->opt.readahead_sync_decompress = false;
#endif
#ifdef CONFIG_EROFS_FS_XATTR
- set_opt(ctx, XATTR_USER);
+ set_opt(&ctx->opt, XATTR_USER);
#endif
#ifdef CONFIG_EROFS_FS_POSIX_ACL
- set_opt(ctx, POSIX_ACL);
+ set_opt(&ctx->opt, POSIX_ACL);
#endif
}
switch (mode) {
case EROFS_MOUNT_DAX_ALWAYS:
warnfc(fc, "DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
- set_opt(ctx, DAX_ALWAYS);
- clear_opt(ctx, DAX_NEVER);
+ set_opt(&ctx->opt, DAX_ALWAYS);
+ clear_opt(&ctx->opt, DAX_NEVER);
return true;
case EROFS_MOUNT_DAX_NEVER:
- set_opt(ctx, DAX_NEVER);
- clear_opt(ctx, DAX_ALWAYS);
+ set_opt(&ctx->opt, DAX_NEVER);
+ clear_opt(&ctx->opt, DAX_ALWAYS);
return true;
default:
DBG_BUGON(1);
case Opt_user_xattr:
#ifdef CONFIG_EROFS_FS_XATTR
if (result.boolean)
- set_opt(ctx, XATTR_USER);
+ set_opt(&ctx->opt, XATTR_USER);
else
- clear_opt(ctx, XATTR_USER);
+ clear_opt(&ctx->opt, XATTR_USER);
#else
errorfc(fc, "{,no}user_xattr options not supported");
#endif
case Opt_acl:
#ifdef CONFIG_EROFS_FS_POSIX_ACL
if (result.boolean)
- set_opt(ctx, POSIX_ACL);
+ set_opt(&ctx->opt, POSIX_ACL);
else
- clear_opt(ctx, POSIX_ACL);
+ clear_opt(&ctx->opt, POSIX_ACL);
#else
errorfc(fc, "{,no}acl options not supported");
#endif
break;
case Opt_cache_strategy:
#ifdef CONFIG_EROFS_FS_ZIP
- ctx->cache_strategy = result.uint_32;
+ ctx->opt.cache_strategy = result.uint_32;
#else
errorfc(fc, "compression not supported, cache_strategy ignored");
#endif
return -ENOMEM;
sb->s_fs_info = sbi;
+ sbi->opt = ctx->opt;
sbi->dax_dev = fs_dax_get_by_bdev(sb->s_bdev);
err = erofs_read_superblock(sb);
if (err)
return err;
- if (test_opt(ctx, DAX_ALWAYS) &&
+ if (test_opt(&sbi->opt, DAX_ALWAYS) &&
!dax_supported(sbi->dax_dev, sb->s_bdev, EROFS_BLKSIZ, 0, bdev_nr_sectors(sb->s_bdev))) {
errorfc(fc, "DAX unsupported by block device. Turning off DAX.");
- clear_opt(ctx, DAX_ALWAYS);
+ clear_opt(&sbi->opt, DAX_ALWAYS);
}
sb->s_flags |= SB_RDONLY | SB_NOATIME;
sb->s_maxbytes = MAX_LFS_FILESIZE;
sb->s_op = &erofs_sops;
sb->s_xattr = erofs_xattr_handlers;
- if (test_opt(ctx, POSIX_ACL))
+ if (test_opt(&sbi->opt, POSIX_ACL))
sb->s_flags |= SB_POSIXACL;
else
sb->s_flags &= ~SB_POSIXACL;
- sbi->ctx = *ctx;
-
#ifdef CONFIG_EROFS_FS_ZIP
xa_init(&sbi->managed_pslots);
#endif
DBG_BUGON(!sb_rdonly(sb));
- if (test_opt(ctx, POSIX_ACL))
+ if (test_opt(&ctx->opt, POSIX_ACL))
fc->sb_flags |= SB_POSIXACL;
else
fc->sb_flags &= ~SB_POSIXACL;
- sbi->ctx = *ctx;
+ sbi->opt = ctx->opt;
fc->sb_flags |= SB_RDONLY;
return 0;
erofs_default_options(fc->fs_private);
fc->ops = &erofs_context_ops;
-
return 0;
}
static int erofs_show_options(struct seq_file *seq, struct dentry *root)
{
struct erofs_sb_info *sbi = EROFS_SB(root->d_sb);
- struct erofs_fs_context *ctx = &sbi->ctx;
+ struct erofs_mount_opts *opt = &sbi->opt;
#ifdef CONFIG_EROFS_FS_XATTR
- if (test_opt(ctx, XATTR_USER))
+ if (test_opt(opt, XATTR_USER))
seq_puts(seq, ",user_xattr");
else
seq_puts(seq, ",nouser_xattr");
#endif
#ifdef CONFIG_EROFS_FS_POSIX_ACL
- if (test_opt(ctx, POSIX_ACL))
+ if (test_opt(opt, POSIX_ACL))
seq_puts(seq, ",acl");
else
seq_puts(seq, ",noacl");
#endif
#ifdef CONFIG_EROFS_FS_ZIP
- if (ctx->cache_strategy == EROFS_ZIP_CACHE_DISABLED)
+ if (opt->cache_strategy == EROFS_ZIP_CACHE_DISABLED)
seq_puts(seq, ",cache_strategy=disabled");
- else if (ctx->cache_strategy == EROFS_ZIP_CACHE_READAHEAD)
+ else if (opt->cache_strategy == EROFS_ZIP_CACHE_READAHEAD)
seq_puts(seq, ",cache_strategy=readahead");
- else if (ctx->cache_strategy == EROFS_ZIP_CACHE_READAROUND)
+ else if (opt->cache_strategy == EROFS_ZIP_CACHE_READAROUND)
seq_puts(seq, ",cache_strategy=readaround");
#endif
- if (test_opt(ctx, DAX_ALWAYS))
+ if (test_opt(opt, DAX_ALWAYS))
seq_puts(seq, ",dax=always");
- if (test_opt(ctx, DAX_NEVER))
+ if (test_opt(opt, DAX_NEVER))
seq_puts(seq, ",dax=never");
return 0;
}