f2fs.h (fadb2fb8af5348c1bc59cab17c6f8bf515e50d55) f2fs.h (aaec2b1d18792a5f27b69ff37f34f43f89f5aa3b)
1/*
2 * fs/f2fs/f2fs.h
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

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792
793 /* for bio operations */
794 struct f2fs_bio_info read_io; /* for read bios */
795 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
796 struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */
797
798 /* for checkpoint */
799 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
1/*
2 * fs/f2fs/f2fs.h
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

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792
793 /* for bio operations */
794 struct f2fs_bio_info read_io; /* for read bios */
795 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
796 struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */
797
798 /* for checkpoint */
799 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
800 spinlock_t cp_lock; /* for flag in ckpt */
800 struct inode *meta_inode; /* cache meta blocks */
801 struct mutex cp_mutex; /* checkpoint procedure lock */
802 struct rw_semaphore cp_rwsem; /* blocking FS operations */
803 struct rw_semaphore node_write; /* locking node writes */
804 wait_queue_head_t cp_wait;
805 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
806 long interval_time[MAX_TIME]; /* to store thresholds */
807

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1059 clear_bit(type, &sbi->s_flag);
1060}
1061
1062static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1063{
1064 return le64_to_cpu(cp->checkpoint_ver);
1065}
1066
801 struct inode *meta_inode; /* cache meta blocks */
802 struct mutex cp_mutex; /* checkpoint procedure lock */
803 struct rw_semaphore cp_rwsem; /* blocking FS operations */
804 struct rw_semaphore node_write; /* locking node writes */
805 wait_queue_head_t cp_wait;
806 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
807 long interval_time[MAX_TIME]; /* to store thresholds */
808

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1060 clear_bit(type, &sbi->s_flag);
1061}
1062
1063static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1064{
1065 return le64_to_cpu(cp->checkpoint_ver);
1066}
1067
1067static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1068static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1068{
1069 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1069{
1070 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1071
1070 return ckpt_flags & f;
1071}
1072
1072 return ckpt_flags & f;
1073}
1074
1073static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1075static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1074{
1076{
1075 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1077 return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1078}
1079
1080static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1081{
1082 unsigned int ckpt_flags;
1083
1084 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1076 ckpt_flags |= f;
1077 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1078}
1079
1085 ckpt_flags |= f;
1086 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1087}
1088
1080static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1089static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1081{
1090{
1082 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1091 spin_lock(&sbi->cp_lock);
1092 __set_ckpt_flags(F2FS_CKPT(sbi), f);
1093 spin_unlock(&sbi->cp_lock);
1094}
1095
1096static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1097{
1098 unsigned int ckpt_flags;
1099
1100 ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1083 ckpt_flags &= (~f);
1084 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1085}
1086
1101 ckpt_flags &= (~f);
1102 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1103}
1104
1105static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1106{
1107 spin_lock(&sbi->cp_lock);
1108 __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1109 spin_unlock(&sbi->cp_lock);
1110}
1111
1087static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
1088{
1089 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
1090
1091 return blk_queue_discard(q);
1092}
1093
1094static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)

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1124
1125static inline bool __remain_node_summaries(int reason)
1126{
1127 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1128}
1129
1130static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1131{
1112static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
1113{
1114 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
1115
1116 return blk_queue_discard(q);
1117}
1118
1119static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)

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1149
1150static inline bool __remain_node_summaries(int reason)
1151{
1152 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1153}
1154
1155static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1156{
1132 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1133 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1157 return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1158 is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1134}
1135
1136/*
1137 * Check whether the given nid is within node id range.
1138 */
1139static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1140{
1141 if (unlikely(nid < F2FS_ROOT_INO(sbi)))

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1827
1828static inline int f2fs_readonly(struct super_block *sb)
1829{
1830 return sb->s_flags & MS_RDONLY;
1831}
1832
1833static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1834{
1159}
1160
1161/*
1162 * Check whether the given nid is within node id range.
1163 */
1164static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1165{
1166 if (unlikely(nid < F2FS_ROOT_INO(sbi)))

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1852
1853static inline int f2fs_readonly(struct super_block *sb)
1854{
1855 return sb->s_flags & MS_RDONLY;
1856}
1857
1858static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1859{
1835 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1860 return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
1836}
1837
1838static inline bool is_dot_dotdot(const struct qstr *str)
1839{
1840 if (str->len == 1 && str->name[0] == '.')
1841 return true;
1842
1843 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')

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1862
1863static inline bool is_dot_dotdot(const struct qstr *str)
1864{
1865 if (str->len == 1 && str->name[0] == '.')
1866 return true;
1867
1868 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')

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