f2fs.h (6ae1be13e85f4c42c8ca371fda50ae39eebbfd96) f2fs.h (3c62be17d4f562f43fe1d03b48194399caa35aa5)
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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704struct f2fs_bio_info {
705 struct f2fs_sb_info *sbi; /* f2fs superblock */
706 struct bio *bio; /* bios to merge */
707 sector_t last_block_in_bio; /* last block number */
708 struct f2fs_io_info fio; /* store buffered io info. */
709 struct rw_semaphore io_rwsem; /* blocking op for bio */
710};
711
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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704struct f2fs_bio_info {
705 struct f2fs_sb_info *sbi; /* f2fs superblock */
706 struct bio *bio; /* bios to merge */
707 sector_t last_block_in_bio; /* last block number */
708 struct f2fs_io_info fio; /* store buffered io info. */
709 struct rw_semaphore io_rwsem; /* blocking op for bio */
710};
711
712#define FDEV(i) (sbi->devs[i])
713#define RDEV(i) (raw_super->devs[i])
714struct f2fs_dev_info {
715 struct block_device *bdev;
716 char path[MAX_PATH_LEN];
717 unsigned int total_segments;
718 block_t start_blk;
719 block_t end_blk;
720#ifdef CONFIG_BLK_DEV_ZONED
721 unsigned int nr_blkz; /* Total number of zones */
722 u8 *blkz_type; /* Array of zones type */
723#endif
724};
725
712enum inode_type {
713 DIR_INODE, /* for dirty dir inode */
714 FILE_INODE, /* for dirty regular/symlink inode */
715 DIRTY_META, /* for all dirtied inode metadata */
716 NR_INODE_TYPE,
717};
718
719/* for inner inode cache management */

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752 unsigned long s_flag; /* flags for sbi */
753
754#ifdef CONFIG_F2FS_FS_ENCRYPTION
755 u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE];
756 u8 key_prefix_size;
757#endif
758
759#ifdef CONFIG_BLK_DEV_ZONED
726enum inode_type {
727 DIR_INODE, /* for dirty dir inode */
728 FILE_INODE, /* for dirty regular/symlink inode */
729 DIRTY_META, /* for all dirtied inode metadata */
730 NR_INODE_TYPE,
731};
732
733/* for inner inode cache management */

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766 unsigned long s_flag; /* flags for sbi */
767
768#ifdef CONFIG_F2FS_FS_ENCRYPTION
769 u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE];
770 u8 key_prefix_size;
771#endif
772
773#ifdef CONFIG_BLK_DEV_ZONED
760 unsigned int nr_blkz; /* Total number of zones */
761 unsigned int blocks_per_blkz; /* F2FS blocks per zone */
762 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
774 unsigned int blocks_per_blkz; /* F2FS blocks per zone */
775 unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
763 u8 *blkz_type; /* Array of zones type */
764#endif
765
766 /* for node-related operations */
767 struct f2fs_nm_info *nm_info; /* node manager */
768 struct inode *node_inode; /* cache node blocks */
769
770 /* for segment-related operations */
771 struct f2fs_sm_info *sm_info; /* segment manager */

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871 spinlock_t stat_lock; /* lock for stat operations */
872
873 /* For sysfs suppport */
874 struct kobject s_kobj;
875 struct completion s_kobj_unregister;
876
877 /* For shrinker support */
878 struct list_head s_list;
776#endif
777
778 /* for node-related operations */
779 struct f2fs_nm_info *nm_info; /* node manager */
780 struct inode *node_inode; /* cache node blocks */
781
782 /* for segment-related operations */
783 struct f2fs_sm_info *sm_info; /* segment manager */

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883 spinlock_t stat_lock; /* lock for stat operations */
884
885 /* For sysfs suppport */
886 struct kobject s_kobj;
887 struct completion s_kobj_unregister;
888
889 /* For shrinker support */
890 struct list_head s_list;
891 int s_ndevs; /* number of devices */
892 struct f2fs_dev_info *devs; /* for device list */
879 struct mutex umount_mutex;
880 unsigned int shrinker_run_no;
881
882 /* For write statistics */
883 u64 sectors_written_start;
884 u64 kbytes_written;
885
886 /* Reference to checksum algorithm driver via cryptoapi */

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2133 * data.c
2134 */
2135void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
2136void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
2137 struct page *, nid_t, enum page_type, int);
2138void f2fs_flush_merged_bios(struct f2fs_sb_info *);
2139int f2fs_submit_page_bio(struct f2fs_io_info *);
2140void f2fs_submit_page_mbio(struct f2fs_io_info *);
893 struct mutex umount_mutex;
894 unsigned int shrinker_run_no;
895
896 /* For write statistics */
897 u64 sectors_written_start;
898 u64 kbytes_written;
899
900 /* Reference to checksum algorithm driver via cryptoapi */

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2147 * data.c
2148 */
2149void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
2150void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
2151 struct page *, nid_t, enum page_type, int);
2152void f2fs_flush_merged_bios(struct f2fs_sb_info *);
2153int f2fs_submit_page_bio(struct f2fs_io_info *);
2154void f2fs_submit_page_mbio(struct f2fs_io_info *);
2155struct block_device *f2fs_target_device(struct f2fs_sb_info *,
2156 block_t, struct bio *);
2157int f2fs_target_device_index(struct f2fs_sb_info *, block_t);
2141void set_data_blkaddr(struct dnode_of_data *);
2142void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
2143int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
2144int reserve_new_block(struct dnode_of_data *);
2145int f2fs_get_block(struct dnode_of_data *, pgoff_t);
2146ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
2147int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
2148struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);

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2420
2421static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb)
2422{
2423 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED);
2424}
2425
2426#ifdef CONFIG_BLK_DEV_ZONED
2427static inline int get_blkz_type(struct f2fs_sb_info *sbi,
2158void set_data_blkaddr(struct dnode_of_data *);
2159void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
2160int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
2161int reserve_new_block(struct dnode_of_data *);
2162int f2fs_get_block(struct dnode_of_data *, pgoff_t);
2163ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
2164int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
2165struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);

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2437
2438static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb)
2439{
2440 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED);
2441}
2442
2443#ifdef CONFIG_BLK_DEV_ZONED
2444static inline int get_blkz_type(struct f2fs_sb_info *sbi,
2428 block_t blkaddr)
2445 struct block_device *bdev, block_t blkaddr)
2429{
2430 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
2446{
2447 unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
2448 int i;
2431
2449
2432 return sbi->blkz_type[zno];
2450 for (i = 0; i < sbi->s_ndevs; i++)
2451 if (FDEV(i).bdev == bdev)
2452 return FDEV(i).blkz_type[zno];
2453 return -EINVAL;
2433}
2434#endif
2435
2436static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
2437{
2438 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
2439
2440 return blk_queue_discard(q) || f2fs_sb_mounted_blkzoned(sbi->sb);

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2455#endif
2456
2457static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
2458{
2459 struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
2460
2461 return blk_queue_discard(q) || f2fs_sb_mounted_blkzoned(sbi->sb);

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