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2ea9004864
Also make inode flags consistent with how the rest of the inode is updated Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_FS_H
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#define _BCACHEFS_FS_H
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#include "inode.h"
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#include "opts.h"
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#include "str_hash.h"
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#include "quota_types.h"
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#include <linux/seqlock.h>
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#include <linux/stat.h>
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/*
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* Two-state lock - can be taken for add or block - both states are shared,
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* like read side of rwsem, but conflict with other state:
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*/
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struct pagecache_lock {
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atomic_long_t v;
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wait_queue_head_t wait;
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};
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static inline void pagecache_lock_init(struct pagecache_lock *lock)
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{
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atomic_long_set(&lock->v, 0);
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init_waitqueue_head(&lock->wait);
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}
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void bch2_pagecache_add_put(struct pagecache_lock *);
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void bch2_pagecache_add_get(struct pagecache_lock *);
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void bch2_pagecache_block_put(struct pagecache_lock *);
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void bch2_pagecache_block_get(struct pagecache_lock *);
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struct bch_inode_info {
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struct inode v;
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struct mutex ei_update_lock;
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u64 ei_journal_seq;
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u64 ei_quota_reserved;
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unsigned long ei_last_dirtied;
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struct pagecache_lock ei_pagecache_lock;
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struct mutex ei_quota_lock;
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struct bch_qid ei_qid;
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struct bch_hash_info ei_str_hash;
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/* copy of inode in btree: */
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struct bch_inode_unpacked ei_inode;
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};
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#define to_bch_ei(_inode) \
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container_of_or_null(_inode, struct bch_inode_info, v)
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static inline struct bch_inode_info *file_bch_inode(struct file *file)
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{
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return to_bch_ei(file_inode(file));
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}
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static inline u8 mode_to_type(umode_t mode)
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{
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return (mode >> 12) & 15;
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}
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static inline unsigned nlink_bias(umode_t mode)
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{
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return S_ISDIR(mode) ? 2 : 1;
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}
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struct bch_inode_unpacked;
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#ifndef NO_BCACHEFS_FS
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/* returns 0 if we want to do the update, or error is passed up */
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typedef int (*inode_set_fn)(struct bch_inode_info *,
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struct bch_inode_unpacked *, void *);
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void bch2_inode_update_after_write(struct bch_fs *,
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struct bch_inode_info *,
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struct bch_inode_unpacked *,
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unsigned);
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int __must_check bch2_write_inode_trans(struct btree_trans *,
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struct bch_inode_info *,
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struct bch_inode_unpacked *,
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inode_set_fn, void *);
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int __must_check bch2_write_inode(struct bch_fs *, struct bch_inode_info *,
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inode_set_fn, void *, unsigned);
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void bch2_vfs_exit(void);
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int bch2_vfs_init(void);
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#else
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static inline void bch2_vfs_exit(void) {}
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static inline int bch2_vfs_init(void) { return 0; }
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#endif /* NO_BCACHEFS_FS */
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#endif /* _BCACHEFS_FS_H */
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