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Merge 4.4.179 into android-4.4-p
[sagit-ice-cold/kernel_xiaomi_msm8998.git] / fs / f2fs / super.c
index aaeba34..814c4fe 100644 (file)
@@ -60,7 +60,7 @@ char *fault_name[FAULT_MAX] = {
 static void f2fs_build_fault_attr(struct f2fs_sb_info *sbi,
                                                unsigned int rate)
 {
-       struct f2fs_fault_info *ffi = &sbi->fault_info;
+       struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
 
        if (rate) {
                atomic_set(&ffi->inject_ops, 0);
@@ -129,6 +129,10 @@ enum {
        Opt_jqfmt_vfsold,
        Opt_jqfmt_vfsv0,
        Opt_jqfmt_vfsv1,
+       Opt_whint,
+       Opt_alloc,
+       Opt_fsync,
+       Opt_test_dummy_encryption,
        Opt_err,
 };
 
@@ -182,6 +186,10 @@ static match_table_t f2fs_tokens = {
        {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
        {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
        {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
+       {Opt_whint, "whint_mode=%s"},
+       {Opt_alloc, "alloc_mode=%s"},
+       {Opt_fsync, "fsync_mode=%s"},
+       {Opt_test_dummy_encryption, "test_dummy_encryption"},
        {Opt_err, NULL},
 };
 
@@ -202,21 +210,24 @@ static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
        block_t limit = (sbi->user_block_count << 1) / 1000;
 
        /* limit is 0.2% */
-       if (test_opt(sbi, RESERVE_ROOT) && sbi->root_reserved_blocks > limit) {
-               sbi->root_reserved_blocks = limit;
+       if (test_opt(sbi, RESERVE_ROOT) &&
+                       F2FS_OPTION(sbi).root_reserved_blocks > limit) {
+               F2FS_OPTION(sbi).root_reserved_blocks = limit;
                f2fs_msg(sbi->sb, KERN_INFO,
                        "Reduce reserved blocks for root = %u",
-                               sbi->root_reserved_blocks);
+                       F2FS_OPTION(sbi).root_reserved_blocks);
        }
        if (!test_opt(sbi, RESERVE_ROOT) &&
-               (!uid_eq(sbi->s_resuid,
+               (!uid_eq(F2FS_OPTION(sbi).s_resuid,
                                make_kuid(&init_user_ns, F2FS_DEF_RESUID)) ||
-               !gid_eq(sbi->s_resgid,
+               !gid_eq(F2FS_OPTION(sbi).s_resgid,
                                make_kgid(&init_user_ns, F2FS_DEF_RESGID))))
                f2fs_msg(sbi->sb, KERN_INFO,
                        "Ignore s_resuid=%u, s_resgid=%u w/o reserve_root",
-                               from_kuid_munged(&init_user_ns, sbi->s_resuid),
-                               from_kgid_munged(&init_user_ns, sbi->s_resgid));
+                               from_kuid_munged(&init_user_ns,
+                                       F2FS_OPTION(sbi).s_resuid),
+                               from_kgid_munged(&init_user_ns,
+                                       F2FS_OPTION(sbi).s_resgid));
 }
 
 static void init_once(void *foo)
@@ -236,7 +247,7 @@ static int f2fs_set_qf_name(struct super_block *sb, int qtype,
        char *qname;
        int ret = -EINVAL;
 
-       if (sb_any_quota_loaded(sb) && !sbi->s_qf_names[qtype]) {
+       if (sb_any_quota_loaded(sb) && !F2FS_OPTION(sbi).s_qf_names[qtype]) {
                f2fs_msg(sb, KERN_ERR,
                        "Cannot change journaled "
                        "quota options when quota turned on");
@@ -254,8 +265,8 @@ static int f2fs_set_qf_name(struct super_block *sb, int qtype,
                        "Not enough memory for storing quotafile name");
                return -EINVAL;
        }
-       if (sbi->s_qf_names[qtype]) {
-               if (strcmp(sbi->s_qf_names[qtype], qname) == 0)
+       if (F2FS_OPTION(sbi).s_qf_names[qtype]) {
+               if (strcmp(F2FS_OPTION(sbi).s_qf_names[qtype], qname) == 0)
                        ret = 0;
                else
                        f2fs_msg(sb, KERN_ERR,
@@ -268,7 +279,7 @@ static int f2fs_set_qf_name(struct super_block *sb, int qtype,
                        "quotafile must be on filesystem root");
                goto errout;
        }
-       sbi->s_qf_names[qtype] = qname;
+       F2FS_OPTION(sbi).s_qf_names[qtype] = qname;
        set_opt(sbi, QUOTA);
        return 0;
 errout:
@@ -280,13 +291,13 @@ static int f2fs_clear_qf_name(struct super_block *sb, int qtype)
 {
        struct f2fs_sb_info *sbi = F2FS_SB(sb);
 
-       if (sb_any_quota_loaded(sb) && sbi->s_qf_names[qtype]) {
+       if (sb_any_quota_loaded(sb) && F2FS_OPTION(sbi).s_qf_names[qtype]) {
                f2fs_msg(sb, KERN_ERR, "Cannot change journaled quota options"
                        " when quota turned on");
                return -EINVAL;
        }
-       kfree(sbi->s_qf_names[qtype]);
-       sbi->s_qf_names[qtype] = NULL;
+       kfree(F2FS_OPTION(sbi).s_qf_names[qtype]);
+       F2FS_OPTION(sbi).s_qf_names[qtype] = NULL;
        return 0;
 }
 
@@ -302,15 +313,19 @@ static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
                         "Cannot enable project quota enforcement.");
                return -1;
        }
-       if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA] ||
-                       sbi->s_qf_names[PRJQUOTA]) {
-               if (test_opt(sbi, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
+       if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
+                       F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
+                       F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]) {
+               if (test_opt(sbi, USRQUOTA) &&
+                               F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
                        clear_opt(sbi, USRQUOTA);
 
-               if (test_opt(sbi, GRPQUOTA) && sbi->s_qf_names[GRPQUOTA])
+               if (test_opt(sbi, GRPQUOTA) &&
+                               F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
                        clear_opt(sbi, GRPQUOTA);
 
-               if (test_opt(sbi, PRJQUOTA) && sbi->s_qf_names[PRJQUOTA])
+               if (test_opt(sbi, PRJQUOTA) &&
+                               F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
                        clear_opt(sbi, PRJQUOTA);
 
                if (test_opt(sbi, GRPQUOTA) || test_opt(sbi, USRQUOTA) ||
@@ -320,19 +335,19 @@ static int f2fs_check_quota_options(struct f2fs_sb_info *sbi)
                        return -1;
                }
 
-               if (!sbi->s_jquota_fmt) {
+               if (!F2FS_OPTION(sbi).s_jquota_fmt) {
                        f2fs_msg(sbi->sb, KERN_ERR, "journaled quota format "
                                        "not specified");
                        return -1;
                }
        }
 
-       if (f2fs_sb_has_quota_ino(sbi->sb) && sbi->s_jquota_fmt) {
+       if (f2fs_sb_has_quota_ino(sbi->sb) && F2FS_OPTION(sbi).s_jquota_fmt) {
                f2fs_msg(sbi->sb, KERN_INFO,
                        "QUOTA feature is enabled, so ignore jquota_fmt");
-               sbi->s_jquota_fmt = 0;
+               F2FS_OPTION(sbi).s_jquota_fmt = 0;
        }
-       if (f2fs_sb_has_quota_ino(sbi->sb) && sb_rdonly(sbi->sb)) {
+       if (f2fs_sb_has_quota_ino(sbi->sb) && f2fs_readonly(sbi->sb)) {
                f2fs_msg(sbi->sb, KERN_INFO,
                         "Filesystem with quota feature cannot be mounted RDWR "
                         "without CONFIG_QUOTA");
@@ -403,14 +418,14 @@ static int parse_options(struct super_block *sb, char *options)
                        q = bdev_get_queue(sb->s_bdev);
                        if (blk_queue_discard(q)) {
                                set_opt(sbi, DISCARD);
-                       } else if (!f2fs_sb_mounted_blkzoned(sb)) {
+                       } else if (!f2fs_sb_has_blkzoned(sb)) {
                                f2fs_msg(sb, KERN_WARNING,
                                        "mounting with \"discard\" option, but "
                                        "the device does not support discard");
                        }
                        break;
                case Opt_nodiscard:
-                       if (f2fs_sb_mounted_blkzoned(sb)) {
+                       if (f2fs_sb_has_blkzoned(sb)) {
                                f2fs_msg(sb, KERN_WARNING,
                                        "discard is required for zoned block devices");
                                return -EINVAL;
@@ -440,7 +455,7 @@ static int parse_options(struct super_block *sb, char *options)
                        if (args->from && match_int(args, &arg))
                                return -EINVAL;
                        set_opt(sbi, INLINE_XATTR_SIZE);
-                       sbi->inline_xattr_size = arg;
+                       F2FS_OPTION(sbi).inline_xattr_size = arg;
                        break;
 #else
                case Opt_user_xattr:
@@ -480,7 +495,7 @@ static int parse_options(struct super_block *sb, char *options)
                                return -EINVAL;
                        if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE)
                                return -EINVAL;
-                       sbi->active_logs = arg;
+                       F2FS_OPTION(sbi).active_logs = arg;
                        break;
                case Opt_disable_ext_identify:
                        set_opt(sbi, DISABLE_EXT_IDENTIFY);
@@ -524,9 +539,9 @@ static int parse_options(struct super_block *sb, char *options)
                        if (test_opt(sbi, RESERVE_ROOT)) {
                                f2fs_msg(sb, KERN_INFO,
                                        "Preserve previous reserve_root=%u",
-                                       sbi->root_reserved_blocks);
+                                       F2FS_OPTION(sbi).root_reserved_blocks);
                        } else {
-                               sbi->root_reserved_blocks = arg;
+                               F2FS_OPTION(sbi).root_reserved_blocks = arg;
                                set_opt(sbi, RESERVE_ROOT);
                        }
                        break;
@@ -539,7 +554,7 @@ static int parse_options(struct super_block *sb, char *options)
                                        "Invalid uid value %d", arg);
                                return -EINVAL;
                        }
-                       sbi->s_resuid = uid;
+                       F2FS_OPTION(sbi).s_resuid = uid;
                        break;
                case Opt_resgid:
                        if (args->from && match_int(args, &arg))
@@ -550,7 +565,7 @@ static int parse_options(struct super_block *sb, char *options)
                                        "Invalid gid value %d", arg);
                                return -EINVAL;
                        }
-                       sbi->s_resgid = gid;
+                       F2FS_OPTION(sbi).s_resgid = gid;
                        break;
                case Opt_mode:
                        name = match_strdup(&args[0]);
@@ -559,7 +574,7 @@ static int parse_options(struct super_block *sb, char *options)
                                return -ENOMEM;
                        if (strlen(name) == 8 &&
                                        !strncmp(name, "adaptive", 8)) {
-                               if (f2fs_sb_mounted_blkzoned(sb)) {
+                               if (f2fs_sb_has_blkzoned(sb)) {
                                        f2fs_msg(sb, KERN_WARNING,
                                                 "adaptive mode is not allowed with "
                                                 "zoned block device feature");
@@ -585,7 +600,7 @@ static int parse_options(struct super_block *sb, char *options)
                                        1 << arg, BIO_MAX_PAGES);
                                return -EINVAL;
                        }
-                       sbi->write_io_size_bits = arg;
+                       F2FS_OPTION(sbi).write_io_size_bits = arg;
                        break;
                case Opt_fault_injection:
                        if (args->from && match_int(args, &arg))
@@ -646,13 +661,13 @@ static int parse_options(struct super_block *sb, char *options)
                                return ret;
                        break;
                case Opt_jqfmt_vfsold:
-                       sbi->s_jquota_fmt = QFMT_VFS_OLD;
+                       F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_OLD;
                        break;
                case Opt_jqfmt_vfsv0:
-                       sbi->s_jquota_fmt = QFMT_VFS_V0;
+                       F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V0;
                        break;
                case Opt_jqfmt_vfsv1:
-                       sbi->s_jquota_fmt = QFMT_VFS_V1;
+                       F2FS_OPTION(sbi).s_jquota_fmt = QFMT_VFS_V1;
                        break;
                case Opt_noquota:
                        clear_opt(sbi, QUOTA);
@@ -679,6 +694,77 @@ static int parse_options(struct super_block *sb, char *options)
                                        "quota operations not supported");
                        break;
 #endif
+               case Opt_whint:
+                       name = match_strdup(&args[0]);
+                       if (!name)
+                               return -ENOMEM;
+                       if (strlen(name) == 10 &&
+                                       !strncmp(name, "user-based", 10)) {
+                               F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
+                       } else if (strlen(name) == 3 &&
+                                       !strncmp(name, "off", 3)) {
+                               F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
+                       } else if (strlen(name) == 8 &&
+                                       !strncmp(name, "fs-based", 8)) {
+                               F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
+                       } else {
+                               kfree(name);
+                               return -EINVAL;
+                       }
+                       kfree(name);
+                       break;
+               case Opt_alloc:
+                       name = match_strdup(&args[0]);
+                       if (!name)
+                               return -ENOMEM;
+
+                       if (strlen(name) == 7 &&
+                                       !strncmp(name, "default", 7)) {
+                               F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
+                       } else if (strlen(name) == 5 &&
+                                       !strncmp(name, "reuse", 5)) {
+                               F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
+                       } else {
+                               kfree(name);
+                               return -EINVAL;
+                       }
+                       kfree(name);
+                       break;
+               case Opt_fsync:
+                       name = match_strdup(&args[0]);
+                       if (!name)
+                               return -ENOMEM;
+                       if (strlen(name) == 5 &&
+                                       !strncmp(name, "posix", 5)) {
+                               F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
+                       } else if (strlen(name) == 6 &&
+                                       !strncmp(name, "strict", 6)) {
+                               F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_STRICT;
+                       } else if (strlen(name) == 9 &&
+                                       !strncmp(name, "nobarrier", 9)) {
+                               F2FS_OPTION(sbi).fsync_mode =
+                                                       FSYNC_MODE_NOBARRIER;
+                       } else {
+                               kfree(name);
+                               return -EINVAL;
+                       }
+                       kfree(name);
+                       break;
+               case Opt_test_dummy_encryption:
+#ifdef CONFIG_F2FS_FS_ENCRYPTION
+                       if (!f2fs_sb_has_encrypt(sb)) {
+                               f2fs_msg(sb, KERN_ERR, "Encrypt feature is off");
+                               return -EINVAL;
+                       }
+
+                       F2FS_OPTION(sbi).test_dummy_encryption = true;
+                       f2fs_msg(sb, KERN_INFO,
+                                       "Test dummy encryption mode enabled");
+#else
+                       f2fs_msg(sb, KERN_INFO,
+                                       "Test dummy encryption mount option ignored");
+#endif
+                       break;
                default:
                        f2fs_msg(sb, KERN_ERR,
                                "Unrecognized mount option \"%s\" or missing value",
@@ -699,14 +785,22 @@ static int parse_options(struct super_block *sb, char *options)
        }
 
        if (test_opt(sbi, INLINE_XATTR_SIZE)) {
+               if (!f2fs_sb_has_extra_attr(sb) ||
+                       !f2fs_sb_has_flexible_inline_xattr(sb)) {
+                       f2fs_msg(sb, KERN_ERR,
+                                       "extra_attr or flexible_inline_xattr "
+                                       "feature is off");
+                       return -EINVAL;
+               }
                if (!test_opt(sbi, INLINE_XATTR)) {
                        f2fs_msg(sb, KERN_ERR,
                                        "inline_xattr_size option should be "
                                        "set with inline_xattr option");
                        return -EINVAL;
                }
-               if (!sbi->inline_xattr_size ||
-                       sbi->inline_xattr_size >= DEF_ADDRS_PER_INODE -
+               if (!F2FS_OPTION(sbi).inline_xattr_size ||
+                       F2FS_OPTION(sbi).inline_xattr_size >=
+                                       DEF_ADDRS_PER_INODE -
                                        F2FS_TOTAL_EXTRA_ATTR_SIZE -
                                        DEF_INLINE_RESERVED_SIZE -
                                        DEF_MIN_INLINE_SIZE) {
@@ -715,6 +809,12 @@ static int parse_options(struct super_block *sb, char *options)
                        return -EINVAL;
                }
        }
+
+       /* Not pass down write hints if the number of active logs is lesser
+        * than NR_CURSEG_TYPE.
+        */
+       if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_TYPE)
+               F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
        return 0;
 }
 
@@ -731,7 +831,6 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
        /* Initialize f2fs-specific inode info */
        atomic_set(&fi->dirty_pages, 0);
        fi->i_current_depth = 1;
-       fi->i_advise = 0;
        init_rwsem(&fi->i_sem);
        INIT_LIST_HEAD(&fi->dirty_list);
        INIT_LIST_HEAD(&fi->gdirty_list);
@@ -743,10 +842,6 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb)
        init_rwsem(&fi->i_mmap_sem);
        init_rwsem(&fi->i_xattr_sem);
 
-#ifdef CONFIG_QUOTA
-       memset(&fi->i_dquot, 0, sizeof(fi->i_dquot));
-       fi->i_reserved_quota = 0;
-#endif
        /* Will be used by directory only */
        fi->i_dir_level = F2FS_SB(sb)->dir_level;
 
@@ -957,7 +1052,7 @@ static void f2fs_put_super(struct super_block *sb)
                mempool_destroy(sbi->write_io_dummy);
 #ifdef CONFIG_QUOTA
        for (i = 0; i < MAXQUOTAS; i++)
-               kfree(sbi->s_qf_names[i]);
+               kfree(F2FS_OPTION(sbi).s_qf_names[i]);
 #endif
        destroy_percpu_info(sbi);
        for (i = 0; i < NR_PAGE_TYPE; i++)
@@ -1071,8 +1166,9 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
        buf->f_blocks = total_count - start_count;
        buf->f_bfree = user_block_count - valid_user_blocks(sbi) -
                                                sbi->current_reserved_blocks;
-       if (buf->f_bfree > sbi->root_reserved_blocks)
-               buf->f_bavail = buf->f_bfree - sbi->root_reserved_blocks;
+       if (buf->f_bfree > F2FS_OPTION(sbi).root_reserved_blocks)
+               buf->f_bavail = buf->f_bfree -
+                               F2FS_OPTION(sbi).root_reserved_blocks;
        else
                buf->f_bavail = 0;
 
@@ -1107,10 +1203,10 @@ static inline void f2fs_show_quota_options(struct seq_file *seq,
 #ifdef CONFIG_QUOTA
        struct f2fs_sb_info *sbi = F2FS_SB(sb);
 
-       if (sbi->s_jquota_fmt) {
+       if (F2FS_OPTION(sbi).s_jquota_fmt) {
                char *fmtname = "";
 
-               switch (sbi->s_jquota_fmt) {
+               switch (F2FS_OPTION(sbi).s_jquota_fmt) {
                case QFMT_VFS_OLD:
                        fmtname = "vfsold";
                        break;
@@ -1124,14 +1220,17 @@ static inline void f2fs_show_quota_options(struct seq_file *seq,
                seq_printf(seq, ",jqfmt=%s", fmtname);
        }
 
-       if (sbi->s_qf_names[USRQUOTA])
-               seq_show_option(seq, "usrjquota", sbi->s_qf_names[USRQUOTA]);
+       if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA])
+               seq_show_option(seq, "usrjquota",
+                       F2FS_OPTION(sbi).s_qf_names[USRQUOTA]);
 
-       if (sbi->s_qf_names[GRPQUOTA])
-               seq_show_option(seq, "grpjquota", sbi->s_qf_names[GRPQUOTA]);
+       if (F2FS_OPTION(sbi).s_qf_names[GRPQUOTA])
+               seq_show_option(seq, "grpjquota",
+                       F2FS_OPTION(sbi).s_qf_names[GRPQUOTA]);
 
-       if (sbi->s_qf_names[PRJQUOTA])
-               seq_show_option(seq, "prjjquota", sbi->s_qf_names[PRJQUOTA]);
+       if (F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
+               seq_show_option(seq, "prjjquota",
+                       F2FS_OPTION(sbi).s_qf_names[PRJQUOTA]);
 #endif
 }
 
@@ -1166,7 +1265,7 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
                seq_puts(seq, ",noinline_xattr");
        if (test_opt(sbi, INLINE_XATTR_SIZE))
                seq_printf(seq, ",inline_xattr_size=%u",
-                                       sbi->inline_xattr_size);
+                                       F2FS_OPTION(sbi).inline_xattr_size);
 #endif
 #ifdef CONFIG_F2FS_FS_POSIX_ACL
        if (test_opt(sbi, POSIX_ACL))
@@ -1202,18 +1301,20 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
                seq_puts(seq, "adaptive");
        else if (test_opt(sbi, LFS))
                seq_puts(seq, "lfs");
-       seq_printf(seq, ",active_logs=%u", sbi->active_logs);
+       seq_printf(seq, ",active_logs=%u", F2FS_OPTION(sbi).active_logs);
        if (test_opt(sbi, RESERVE_ROOT))
                seq_printf(seq, ",reserve_root=%u,resuid=%u,resgid=%u",
-                               sbi->root_reserved_blocks,
-                               from_kuid_munged(&init_user_ns, sbi->s_resuid),
-                               from_kgid_munged(&init_user_ns, sbi->s_resgid));
+                               F2FS_OPTION(sbi).root_reserved_blocks,
+                               from_kuid_munged(&init_user_ns,
+                                       F2FS_OPTION(sbi).s_resuid),
+                               from_kgid_munged(&init_user_ns,
+                                       F2FS_OPTION(sbi).s_resgid));
        if (F2FS_IO_SIZE_BITS(sbi))
                seq_printf(seq, ",io_size=%uKB", F2FS_IO_SIZE_KB(sbi));
 #ifdef CONFIG_F2FS_FAULT_INJECTION
        if (test_opt(sbi, FAULT_INJECTION))
                seq_printf(seq, ",fault_injection=%u",
-                               sbi->fault_info.inject_rate);
+                               F2FS_OPTION(sbi).fault_info.inject_rate);
 #endif
 #ifdef CONFIG_QUOTA
        if (test_opt(sbi, QUOTA))
@@ -1226,15 +1327,37 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
                seq_puts(seq, ",prjquota");
 #endif
        f2fs_show_quota_options(seq, sbi->sb);
+       if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
+               seq_printf(seq, ",whint_mode=%s", "user-based");
+       else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
+               seq_printf(seq, ",whint_mode=%s", "fs-based");
+#ifdef CONFIG_F2FS_FS_ENCRYPTION
+       if (F2FS_OPTION(sbi).test_dummy_encryption)
+               seq_puts(seq, ",test_dummy_encryption");
+#endif
+
+       if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_DEFAULT)
+               seq_printf(seq, ",alloc_mode=%s", "default");
+       else if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE)
+               seq_printf(seq, ",alloc_mode=%s", "reuse");
 
+       if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_POSIX)
+               seq_printf(seq, ",fsync_mode=%s", "posix");
+       else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT)
+               seq_printf(seq, ",fsync_mode=%s", "strict");
        return 0;
 }
 
 static void default_options(struct f2fs_sb_info *sbi)
 {
        /* init some FS parameters */
-       sbi->active_logs = NR_CURSEG_TYPE;
-       sbi->inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
+       F2FS_OPTION(sbi).active_logs = NR_CURSEG_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;
+       F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
+       F2FS_OPTION(sbi).test_dummy_encryption = false;
+       sbi->readdir_ra = 1;
 
        set_opt(sbi, BG_GC);
        set_opt(sbi, INLINE_XATTR);
@@ -1244,7 +1367,7 @@ static void default_options(struct f2fs_sb_info *sbi)
        set_opt(sbi, NOHEAP);
        sbi->sb->s_flags |= MS_LAZYTIME;
        set_opt(sbi, FLUSH_MERGE);
-       if (f2fs_sb_mounted_blkzoned(sbi->sb)) {
+       if (f2fs_sb_has_blkzoned(sbi->sb)) {
                set_opt_mode(sbi, F2FS_MOUNT_LFS);
                set_opt(sbi, DISCARD);
        } else {
@@ -1271,16 +1394,11 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
        struct f2fs_sb_info *sbi = F2FS_SB(sb);
        struct f2fs_mount_info org_mount_opt;
        unsigned long old_sb_flags;
-       int err, active_logs;
+       int err;
        bool need_restart_gc = false;
        bool need_stop_gc = false;
        bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE);
-#ifdef CONFIG_F2FS_FAULT_INJECTION
-       struct f2fs_fault_info ffi = sbi->fault_info;
-#endif
 #ifdef CONFIG_QUOTA
-       int s_jquota_fmt;
-       char *s_qf_names[MAXQUOTAS];
        int i, j;
 #endif
 
@@ -1290,21 +1408,21 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
         */
        org_mount_opt = sbi->mount_opt;
        old_sb_flags = sb->s_flags;
-       active_logs = sbi->active_logs;
 
 #ifdef CONFIG_QUOTA
-       s_jquota_fmt = sbi->s_jquota_fmt;
+       org_mount_opt.s_jquota_fmt = F2FS_OPTION(sbi).s_jquota_fmt;
        for (i = 0; i < MAXQUOTAS; i++) {
-               if (sbi->s_qf_names[i]) {
-                       s_qf_names[i] = kstrdup(sbi->s_qf_names[i],
-                                                        GFP_KERNEL);
-                       if (!s_qf_names[i]) {
+               if (F2FS_OPTION(sbi).s_qf_names[i]) {
+                       org_mount_opt.s_qf_names[i] =
+                               kstrdup(F2FS_OPTION(sbi).s_qf_names[i],
+                               GFP_KERNEL);
+                       if (!org_mount_opt.s_qf_names[i]) {
                                for (j = 0; j < i; j++)
-                                       kfree(s_qf_names[j]);
+                                       kfree(org_mount_opt.s_qf_names[j]);
                                return -ENOMEM;
                        }
                } else {
-                       s_qf_names[i] = NULL;
+                       org_mount_opt.s_qf_names[i] = NULL;
                }
        }
 #endif
@@ -1374,7 +1492,8 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
                need_stop_gc = true;
        }
 
-       if (*flags & MS_RDONLY) {
+       if (*flags & MS_RDONLY ||
+               F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
                writeback_inodes_sb(sb, WB_REASON_SYNC);
                sync_inodes_sb(sb);
 
@@ -1400,7 +1519,7 @@ skip:
 #ifdef CONFIG_QUOTA
        /* Release old quota file names */
        for (i = 0; i < MAXQUOTAS; i++)
-               kfree(s_qf_names[i]);
+               kfree(org_mount_opt.s_qf_names[i]);
 #endif
        /* Update the POSIXACL Flag */
        sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
@@ -1418,18 +1537,14 @@ restore_gc:
        }
 restore_opts:
 #ifdef CONFIG_QUOTA
-       sbi->s_jquota_fmt = s_jquota_fmt;
+       F2FS_OPTION(sbi).s_jquota_fmt = org_mount_opt.s_jquota_fmt;
        for (i = 0; i < MAXQUOTAS; i++) {
-               kfree(sbi->s_qf_names[i]);
-               sbi->s_qf_names[i] = s_qf_names[i];
+               kfree(F2FS_OPTION(sbi).s_qf_names[i]);
+               F2FS_OPTION(sbi).s_qf_names[i] = org_mount_opt.s_qf_names[i];
        }
 #endif
        sbi->mount_opt = org_mount_opt;
-       sbi->active_logs = active_logs;
        sb->s_flags = old_sb_flags;
-#ifdef CONFIG_F2FS_FAULT_INJECTION
-       sbi->fault_info = ffi;
-#endif
        return err;
 }
 
@@ -1457,7 +1572,7 @@ static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
        while (toread > 0) {
                tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread);
 repeat:
-               page = read_mapping_page(mapping, blkidx, NULL);
+               page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS);
                if (IS_ERR(page)) {
                        if (PTR_ERR(page) == -ENOMEM) {
                                congestion_wait(BLK_RW_ASYNC, HZ/50);
@@ -1551,8 +1666,8 @@ static qsize_t *f2fs_get_reserved_space(struct inode *inode)
 
 static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
 {
-       return dquot_quota_on_mount(sbi->sb, sbi->s_qf_names[type],
-                                               sbi->s_jquota_fmt, type);
+       return dquot_quota_on_mount(sbi->sb, F2FS_OPTION(sbi).s_qf_names[type],
+                                       F2FS_OPTION(sbi).s_jquota_fmt, type);
 }
 
 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
@@ -1571,7 +1686,7 @@ int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly)
        }
 
        for (i = 0; i < MAXQUOTAS; i++) {
-               if (sbi->s_qf_names[i]) {
+               if (F2FS_OPTION(sbi).s_qf_names[i]) {
                        err = f2fs_quota_on_mount(sbi, i);
                        if (!err) {
                                enabled = 1;
@@ -1801,11 +1916,28 @@ static int f2fs_get_context(struct inode *inode, void *ctx, size_t len)
 static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len,
                                                        void *fs_data)
 {
+       struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+
+       /*
+        * Encrypting the root directory is not allowed because fsck
+        * expects lost+found directory to exist and remain unencrypted
+        * if LOST_FOUND feature is enabled.
+        *
+        */
+       if (f2fs_sb_has_lost_found(sbi->sb) &&
+                       inode->i_ino == F2FS_ROOT_INO(sbi))
+               return -EPERM;
+
        return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION,
                                F2FS_XATTR_NAME_ENCRYPTION_CONTEXT,
                                ctx, len, fs_data, XATTR_CREATE);
 }
 
+static bool f2fs_dummy_context(struct inode *inode)
+{
+       return DUMMY_ENCRYPTION_ENABLED(F2FS_I_SB(inode));
+}
+
 static unsigned f2fs_max_namelen(struct inode *inode)
 {
        return S_ISLNK(inode->i_mode) ?
@@ -1816,6 +1948,7 @@ static const struct fscrypt_operations f2fs_cryptops = {
        .key_prefix     = "f2fs:",
        .get_context    = f2fs_get_context,
        .set_context    = f2fs_set_context,
+       .dummy_context  = f2fs_dummy_context,
        .empty_dir      = f2fs_empty_dir,
        .max_namelen    = f2fs_max_namelen,
 };
@@ -1898,7 +2031,6 @@ static int __f2fs_commit_super(struct buffer_head *bh,
        lock_buffer(bh);
        if (super)
                memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super));
-       set_buffer_uptodate(bh);
        set_buffer_dirty(bh);
        unlock_buffer(bh);
 
@@ -2100,12 +2232,17 @@ int sanity_check_ckpt(struct f2fs_sb_info *sbi)
        struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
        unsigned int ovp_segments, reserved_segments;
        unsigned int main_segs, blocks_per_seg;
-       int i;
+       unsigned int sit_segs, nat_segs;
+       unsigned int sit_bitmap_size, nat_bitmap_size;
+       unsigned int log_blocks_per_seg;
+       int i, j;
 
        total = le32_to_cpu(raw_super->segment_count);
        fsmeta = le32_to_cpu(raw_super->segment_count_ckpt);
-       fsmeta += le32_to_cpu(raw_super->segment_count_sit);
-       fsmeta += le32_to_cpu(raw_super->segment_count_nat);
+       sit_segs = le32_to_cpu(raw_super->segment_count_sit);
+       fsmeta += sit_segs;
+       nat_segs = le32_to_cpu(raw_super->segment_count_nat);
+       fsmeta += nat_segs;
        fsmeta += le32_to_cpu(ckpt->rsvd_segment_count);
        fsmeta += le32_to_cpu(raw_super->segment_count_ssa);
 
@@ -2129,11 +2266,55 @@ int sanity_check_ckpt(struct f2fs_sb_info *sbi)
                if (le32_to_cpu(ckpt->cur_node_segno[i]) >= main_segs ||
                        le16_to_cpu(ckpt->cur_node_blkoff[i]) >= blocks_per_seg)
                        return 1;
+               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])) {
+                               f2fs_msg(sbi->sb, KERN_ERR,
+                                       "Node segment (%u, %u) has the same "
+                                       "segno: %u", i, j,
+                                       le32_to_cpu(ckpt->cur_node_segno[i]));
+                               return 1;
+                       }
+               }
        }
        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;
+               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])) {
+                               f2fs_msg(sbi->sb, KERN_ERR,
+                                       "Data segment (%u, %u) has the same "
+                                       "segno: %u", i, j,
+                                       le32_to_cpu(ckpt->cur_data_segno[i]));
+                               return 1;
+                       }
+               }
+       }
+       for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
+               for (j = i; j < NR_CURSEG_DATA_TYPE; j++) {
+                       if (le32_to_cpu(ckpt->cur_node_segno[i]) ==
+                               le32_to_cpu(ckpt->cur_data_segno[j])) {
+                               f2fs_msg(sbi->sb, KERN_ERR,
+                                       "Data segment (%u) and Data segment (%u)"
+                                       " has the same segno: %u", i, j,
+                                       le32_to_cpu(ckpt->cur_node_segno[i]));
+                               return 1;
+                       }
+               }
+       }
+
+       sit_bitmap_size = le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
+       nat_bitmap_size = le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
+       log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg);
+
+       if (sit_bitmap_size != ((sit_segs / 2) << log_blocks_per_seg) / 8 ||
+               nat_bitmap_size != ((nat_segs / 2) << log_blocks_per_seg) / 8) {
+               f2fs_msg(sbi->sb, KERN_ERR,
+                       "Wrong bitmap size: sit: %u, nat:%u",
+                       sit_bitmap_size, nat_bitmap_size);
+               return 1;
        }
 
        if (unlikely(f2fs_cp_error(sbi))) {
@@ -2185,6 +2366,8 @@ static void init_sb_info(struct f2fs_sb_info *sbi)
 
        sbi->dirty_device = 0;
        spin_lock_init(&sbi->dev_lock);
+
+       init_rwsem(&sbi->sb_lock);
 }
 
 static int init_percpu_info(struct f2fs_sb_info *sbi)
@@ -2210,7 +2393,7 @@ static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
        unsigned int n = 0;
        int err = -EIO;
 
-       if (!f2fs_sb_mounted_blkzoned(sbi->sb))
+       if (!f2fs_sb_has_blkzoned(sbi->sb))
                return 0;
 
        if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
@@ -2338,7 +2521,7 @@ int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
        }
 
        /* write back-up superblock first */
-       bh = sb_getblk(sbi->sb, sbi->valid_super_block ? 0: 1);
+       bh = sb_bread(sbi->sb, sbi->valid_super_block ? 0 : 1);
        if (!bh)
                return -EIO;
        err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
@@ -2349,7 +2532,7 @@ int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover)
                return err;
 
        /* write current valid superblock */
-       bh = sb_getblk(sbi->sb, sbi->valid_super_block);
+       bh = sb_bread(sbi->sb, sbi->valid_super_block);
        if (!bh)
                return -EIO;
        err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi));
@@ -2421,7 +2604,7 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
 
 #ifdef CONFIG_BLK_DEV_ZONED
                if (bdev_zoned_model(FDEV(i).bdev) == BLK_ZONED_HM &&
-                               !f2fs_sb_mounted_blkzoned(sbi->sb)) {
+                               !f2fs_sb_has_blkzoned(sbi->sb)) {
                        f2fs_msg(sbi->sb, KERN_ERR,
                                "Zoned block device feature not enabled\n");
                        return -EINVAL;
@@ -2455,6 +2638,18 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
        return 0;
 }
 
+static void f2fs_tuning_parameters(struct f2fs_sb_info *sbi)
+{
+       struct f2fs_sm_info *sm_i = SM_I(sbi);
+
+       /* adjust parameters according to the volume size */
+       if (sm_i->main_segments <= SMALL_VOLUME_SEGMENTS) {
+               F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_REUSE;
+               sm_i->dcc_info->discard_granularity = 1;
+               sm_i->ipu_policy = 1 << F2FS_IPU_FORCE;
+       }
+}
+
 static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 {
        struct f2fs_sb_info *sbi;
@@ -2502,8 +2697,8 @@ try_onemore:
        sb->s_fs_info = sbi;
        sbi->raw_super = raw_super;
 
-       sbi->s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
-       sbi->s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
+       F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
+       F2FS_OPTION(sbi).s_resgid = make_kgid(&init_user_ns, F2FS_DEF_RESGID);
 
        /* precompute checksum seed for metadata */
        if (f2fs_sb_has_inode_chksum(sb))
@@ -2516,7 +2711,7 @@ try_onemore:
         * devices, but mandatory for host-managed zoned block devices.
         */
 #ifndef CONFIG_BLK_DEV_ZONED
-       if (f2fs_sb_mounted_blkzoned(sb)) {
+       if (f2fs_sb_has_blkzoned(sb)) {
                f2fs_msg(sb, KERN_ERR,
                         "Zoned block device support is not enabled\n");
                err = -EOPNOTSUPP;
@@ -2732,7 +2927,7 @@ try_onemore:
         * Turn on quotas which were not enabled for read-only mounts if
         * filesystem has quota feature, so that they are updated correctly.
         */
-       if (f2fs_sb_has_quota_ino(sb) && !sb_rdonly(sb)) {
+       if (f2fs_sb_has_quota_ino(sb) && !f2fs_readonly(sb)) {
                err = f2fs_enable_quotas(sb);
                if (err) {
                        f2fs_msg(sb, KERN_ERR,
@@ -2807,6 +3002,8 @@ skip_recovery:
 
        f2fs_join_shrinker(sbi);
 
+       f2fs_tuning_parameters(sbi);
+
        f2fs_msg(sbi->sb, KERN_NOTICE, "Mounted with checkpoint version = %llx",
                                cur_cp_version(F2FS_CKPT(sbi)));
        f2fs_update_time(sbi, CP_TIME);
@@ -2815,7 +3012,7 @@ skip_recovery:
 
 free_meta:
 #ifdef CONFIG_QUOTA
-       if (f2fs_sb_has_quota_ino(sb) && !sb_rdonly(sb))
+       if (f2fs_sb_has_quota_ino(sb) && !f2fs_readonly(sb))
                f2fs_quota_off_umount(sbi->sb);
 #endif
        f2fs_sync_inode_meta(sbi);
@@ -2859,7 +3056,7 @@ free_bio_info:
 free_options:
 #ifdef CONFIG_QUOTA
        for (i = 0; i < MAXQUOTAS; i++)
-               kfree(sbi->s_qf_names[i]);
+               kfree(F2FS_OPTION(sbi).s_qf_names[i]);
 #endif
        kfree(options);
 free_sb_buf:
@@ -2927,6 +3124,12 @@ static int __init init_f2fs_fs(void)
 {
        int err;
 
+       if (PAGE_SIZE != F2FS_BLKSIZE) {
+               printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
+                               PAGE_SIZE, F2FS_BLKSIZE);
+               return -EINVAL;
+       }
+
        f2fs_build_trace_ios();
 
        err = init_inodecache();
@@ -2956,8 +3159,13 @@ static int __init init_f2fs_fs(void)
        err = f2fs_create_root_stats();
        if (err)
                goto free_filesystem;
+       err = f2fs_init_post_read_processing();
+       if (err)
+               goto free_root_stats;
        return 0;
 
+free_root_stats:
+       f2fs_destroy_root_stats();
 free_filesystem:
        unregister_filesystem(&f2fs_fs_type);
 free_shrinker:
@@ -2980,6 +3188,7 @@ fail:
 
 static void __exit exit_f2fs_fs(void)
 {
+       f2fs_destroy_post_read_processing();
        f2fs_destroy_root_stats();
        unregister_filesystem(&f2fs_fs_type);
        unregister_shrinker(&f2fs_shrinker_info);