+++ /dev/null
-/* 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 */
projects / bcachefs-tools-debian / blobdiff