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Diffstat (limited to 'c_src/libbcachefs/fs-io.h')
| -rw-r--r-- | c_src/libbcachefs/fs-io.h | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/c_src/libbcachefs/fs-io.h b/c_src/libbcachefs/fs-io.h deleted file mode 100644 index ca70346e..00000000 --- a/c_src/libbcachefs/fs-io.h +++ /dev/null @@ -1,184 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _BCACHEFS_FS_IO_H -#define _BCACHEFS_FS_IO_H - -#ifndef NO_BCACHEFS_FS - -#include "buckets.h" -#include "fs.h" -#include "io_write_types.h" -#include "quota.h" - -#include <linux/uio.h> - -struct folio_vec { - struct folio *fv_folio; - size_t fv_offset; - size_t fv_len; -}; - -static inline struct folio_vec biovec_to_foliovec(struct bio_vec bv) -{ - - struct folio *folio = page_folio(bv.bv_page); - size_t offset = (folio_page_idx(folio, bv.bv_page) << PAGE_SHIFT) + - bv.bv_offset; - size_t len = min_t(size_t, folio_size(folio) - offset, bv.bv_len); - - return (struct folio_vec) { - .fv_folio = folio, - .fv_offset = offset, - .fv_len = len, - }; -} - -static inline struct folio_vec bio_iter_iovec_folio(struct bio *bio, - struct bvec_iter iter) -{ - return biovec_to_foliovec(bio_iter_iovec(bio, iter)); -} - -#define __bio_for_each_folio(bvl, bio, iter, start) \ - for (iter = (start); \ - (iter).bi_size && \ - ((bvl = bio_iter_iovec_folio((bio), (iter))), 1); \ - bio_advance_iter_single((bio), &(iter), (bvl).fv_len)) - -/** - * bio_for_each_folio - iterate over folios within a bio - * - * Like other non-_all versions, this iterates over what bio->bi_iter currently - * points to. This version is for drivers, where the bio may have previously - * been split or cloned. - */ -#define bio_for_each_folio(bvl, bio, iter) \ - __bio_for_each_folio(bvl, bio, iter, (bio)->bi_iter) - -struct quota_res { - u64 sectors; -}; - -#ifdef CONFIG_BCACHEFS_QUOTA - -static inline void __bch2_quota_reservation_put(struct bch_fs *c, - struct bch_inode_info *inode, - struct quota_res *res) -{ - BUG_ON(res->sectors > inode->ei_quota_reserved); - - bch2_quota_acct(c, inode->ei_qid, Q_SPC, - -((s64) res->sectors), KEY_TYPE_QUOTA_PREALLOC); - inode->ei_quota_reserved -= res->sectors; - res->sectors = 0; -} - -static inline void bch2_quota_reservation_put(struct bch_fs *c, - struct bch_inode_info *inode, - struct quota_res *res) -{ - if (res->sectors) { - mutex_lock(&inode->ei_quota_lock); - __bch2_quota_reservation_put(c, inode, res); - mutex_unlock(&inode->ei_quota_lock); - } -} - -static inline int bch2_quota_reservation_add(struct bch_fs *c, - struct bch_inode_info *inode, - struct quota_res *res, - u64 sectors, - bool check_enospc) -{ - int ret; - - if (test_bit(EI_INODE_SNAPSHOT, &inode->ei_flags)) - return 0; - - mutex_lock(&inode->ei_quota_lock); - ret = bch2_quota_acct(c, inode->ei_qid, Q_SPC, sectors, - check_enospc ? KEY_TYPE_QUOTA_PREALLOC : KEY_TYPE_QUOTA_NOCHECK); - if (likely(!ret)) { - inode->ei_quota_reserved += sectors; - res->sectors += sectors; - } - mutex_unlock(&inode->ei_quota_lock); - - return ret; -} - -#else - -static inline void __bch2_quota_reservation_put(struct bch_fs *c, - struct bch_inode_info *inode, - struct quota_res *res) {} - -static inline void bch2_quota_reservation_put(struct bch_fs *c, - struct bch_inode_info *inode, - struct quota_res *res) {} - -static inline int bch2_quota_reservation_add(struct bch_fs *c, - struct bch_inode_info *inode, - struct quota_res *res, - unsigned sectors, - bool check_enospc) -{ - return 0; -} - -#endif - -void __bch2_i_sectors_acct(struct bch_fs *, struct bch_inode_info *, - struct quota_res *, s64); - -static inline void bch2_i_sectors_acct(struct bch_fs *c, struct bch_inode_info *inode, - struct quota_res *quota_res, s64 sectors) -{ - if (sectors) { - mutex_lock(&inode->ei_quota_lock); - __bch2_i_sectors_acct(c, inode, quota_res, sectors); - mutex_unlock(&inode->ei_quota_lock); - } -} - -static inline struct address_space *faults_disabled_mapping(void) -{ - return (void *) (((unsigned long) current->faults_disabled_mapping) & ~1UL); -} - -static inline void set_fdm_dropped_locks(void) -{ - current->faults_disabled_mapping = - (void *) (((unsigned long) current->faults_disabled_mapping)|1); -} - -static inline bool fdm_dropped_locks(void) -{ - return ((unsigned long) current->faults_disabled_mapping) & 1; -} - -void bch2_inode_flush_nocow_writes_async(struct bch_fs *, - struct bch_inode_info *, struct closure *); - -int __must_check bch2_write_inode_size(struct bch_fs *, - struct bch_inode_info *, - loff_t, unsigned); - -int bch2_fsync(struct file *, loff_t, loff_t, int); - -int bchfs_truncate(struct mnt_idmap *, - struct bch_inode_info *, struct iattr *); -long bch2_fallocate_dispatch(struct file *, int, loff_t, loff_t); - -loff_t bch2_remap_file_range(struct file *, loff_t, struct file *, - loff_t, loff_t, unsigned); - -loff_t bch2_llseek(struct file *, loff_t, int); - -void bch2_fs_fsio_exit(struct bch_fs *); -int bch2_fs_fsio_init(struct bch_fs *); -#else -static inline void bch2_fs_fsio_exit(struct bch_fs *c) {} -static inline int bch2_fs_fsio_init(struct bch_fs *c) { return 0; } -#endif - -#endif /* _BCACHEFS_FS_IO_H */ |