diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 157 |
1 files changed, 27 insertions, 130 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index e2d892b201b0..da3fc3cd2428 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -42,6 +42,7 @@ #include <linux/mount.h> #include <linux/cred.h> #include <linux/mnt_idmapping.h> +#include <linux/slab.h> #include <asm/byteorder.h> #include <uapi/linux/fs.h> @@ -367,8 +368,8 @@ struct address_space_operations { /* Write back some dirty pages from this mapping. */ int (*writepages)(struct address_space *, struct writeback_control *); - /* Set a page dirty. Return true if this dirtied it */ - int (*set_page_dirty)(struct page *page); + /* Mark a folio dirty. Return true if this dirtied it */ + bool (*dirty_folio)(struct address_space *, struct folio *); /* * Reads in the requested pages. Unlike ->readpage(), this is @@ -387,7 +388,7 @@ struct address_space_operations { /* Unfortunately this kludge is needed for FIBMAP. Don't use it */ sector_t (*bmap)(struct address_space *, sector_t); - void (*invalidatepage) (struct page *, unsigned int, unsigned int); + void (*invalidate_folio) (struct folio *, size_t offset, size_t len); int (*releasepage) (struct page *, gfp_t); void (*freepage)(struct page *); ssize_t (*direct_IO)(struct kiocb *, struct iov_iter *iter); @@ -399,9 +400,9 @@ struct address_space_operations { struct page *, struct page *, enum migrate_mode); bool (*isolate_page)(struct page *, isolate_mode_t); void (*putback_page)(struct page *); - int (*launder_page) (struct page *); - int (*is_partially_uptodate) (struct page *, unsigned long, - unsigned long); + int (*launder_folio)(struct folio *); + bool (*is_partially_uptodate) (struct folio *, size_t from, + size_t count); void (*is_dirty_writeback) (struct page *, bool *, bool *); int (*error_remove_page)(struct address_space *, struct page *); @@ -930,10 +931,15 @@ struct fown_struct { * struct file_ra_state - Track a file's readahead state. * @start: Where the most recent readahead started. * @size: Number of pages read in the most recent readahead. - * @async_size: Start next readahead when this many pages are left. - * @ra_pages: Maximum size of a readahead request. + * @async_size: Numer of pages that were/are not needed immediately + * and so were/are genuinely "ahead". Start next readahead when + * the first of these pages is accessed. + * @ra_pages: Maximum size of a readahead request, copied from the bdi. * @mmap_miss: How many mmap accesses missed in the page cache. * @prev_pos: The last byte in the most recent read request. + * + * When this structure is passed to ->readahead(), the "most recent" + * readahead means the current readahead. */ struct file_ra_state { pgoff_t start; @@ -1435,6 +1441,7 @@ extern int send_sigurg(struct fown_struct *fown); #define SB_I_SKIP_SYNC 0x00000100 /* Skip superblock at global sync */ #define SB_I_PERSB_BDI 0x00000200 /* has a per-sb bdi */ +#define SB_I_TS_EXPIRY_WARNED 0x00000400 /* warned about timestamp range expiry */ /* Possible states of 'frozen' field */ enum { @@ -2746,54 +2753,6 @@ extern void init_special_inode(struct inode *, umode_t, dev_t); extern void make_bad_inode(struct inode *); extern bool is_bad_inode(struct inode *); -unsigned long invalidate_mapping_pages(struct address_space *mapping, - pgoff_t start, pgoff_t end); - -void invalidate_mapping_pagevec(struct address_space *mapping, - pgoff_t start, pgoff_t end, - unsigned long *nr_pagevec); - -static inline void invalidate_remote_inode(struct inode *inode) -{ - if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || - S_ISLNK(inode->i_mode)) - invalidate_mapping_pages(inode->i_mapping, 0, -1); -} -extern int invalidate_inode_pages2(struct address_space *mapping); -extern int invalidate_inode_pages2_range(struct address_space *mapping, - pgoff_t start, pgoff_t end); -extern int write_inode_now(struct inode *, int); -extern int filemap_fdatawrite(struct address_space *); -extern int filemap_flush(struct address_space *); -extern int filemap_fdatawait_keep_errors(struct address_space *mapping); -extern int filemap_fdatawait_range(struct address_space *, loff_t lstart, - loff_t lend); -extern int filemap_fdatawait_range_keep_errors(struct address_space *mapping, - loff_t start_byte, loff_t end_byte); - -static inline int filemap_fdatawait(struct address_space *mapping) -{ - return filemap_fdatawait_range(mapping, 0, LLONG_MAX); -} - -extern bool filemap_range_has_page(struct address_space *, loff_t lstart, - loff_t lend); -extern int filemap_write_and_wait_range(struct address_space *mapping, - loff_t lstart, loff_t lend); -extern int __filemap_fdatawrite_range(struct address_space *mapping, - loff_t start, loff_t end, int sync_mode); -extern int filemap_fdatawrite_range(struct address_space *mapping, - loff_t start, loff_t end); -extern int filemap_check_errors(struct address_space *mapping); -extern void __filemap_set_wb_err(struct address_space *mapping, int err); -int filemap_fdatawrite_wbc(struct address_space *mapping, - struct writeback_control *wbc); - -static inline int filemap_write_and_wait(struct address_space *mapping) -{ - return filemap_write_and_wait_range(mapping, 0, LLONG_MAX); -} - extern int __must_check file_fdatawait_range(struct file *file, loff_t lstart, loff_t lend); extern int __must_check file_check_and_advance_wb_err(struct file *file); @@ -2805,67 +2764,6 @@ static inline int file_write_and_wait(struct file *file) return file_write_and_wait_range(file, 0, LLONG_MAX); } -/** - * filemap_set_wb_err - set a writeback error on an address_space - * @mapping: mapping in which to set writeback error - * @err: error to be set in mapping - * - * When writeback fails in some way, we must record that error so that - * userspace can be informed when fsync and the like are called. We endeavor - * to report errors on any file that was open at the time of the error. Some - * internal callers also need to know when writeback errors have occurred. - * - * When a writeback error occurs, most filesystems will want to call - * filemap_set_wb_err to record the error in the mapping so that it will be - * automatically reported whenever fsync is called on the file. - */ -static inline void filemap_set_wb_err(struct address_space *mapping, int err) -{ - /* Fastpath for common case of no error */ - if (unlikely(err)) - __filemap_set_wb_err(mapping, err); -} - -/** - * filemap_check_wb_err - has an error occurred since the mark was sampled? - * @mapping: mapping to check for writeback errors - * @since: previously-sampled errseq_t - * - * Grab the errseq_t value from the mapping, and see if it has changed "since" - * the given value was sampled. - * - * If it has then report the latest error set, otherwise return 0. - */ -static inline int filemap_check_wb_err(struct address_space *mapping, - errseq_t since) -{ - return errseq_check(&mapping->wb_err, since); -} - -/** - * filemap_sample_wb_err - sample the current errseq_t to test for later errors - * @mapping: mapping to be sampled - * - * Writeback errors are always reported relative to a particular sample point - * in the past. This function provides those sample points. - */ -static inline errseq_t filemap_sample_wb_err(struct address_space *mapping) -{ - return errseq_sample(&mapping->wb_err); -} - -/** - * file_sample_sb_err - sample the current errseq_t to test for later errors - * @file: file pointer to be sampled - * - * Grab the most current superblock-level errseq_t value for the given - * struct file. - */ -static inline errseq_t file_sample_sb_err(struct file *file) -{ - return errseq_sample(&file->f_path.dentry->d_sb->s_wb_err); -} - extern int vfs_fsync_range(struct file *file, loff_t start, loff_t end, int datasync); extern int vfs_fsync(struct file *file, int datasync); @@ -3108,6 +3006,16 @@ extern void free_inode_nonrcu(struct inode *inode); extern int should_remove_suid(struct dentry *); extern int file_remove_privs(struct file *); +/* + * This must be used for allocating filesystems specific inodes to set + * up the inode reclaim context correctly. + */ +static inline void * +alloc_inode_sb(struct super_block *sb, struct kmem_cache *cache, gfp_t gfp) +{ + return kmem_cache_alloc_lru(cache, &sb->s_inode_lru, gfp); +} + extern void __insert_inode_hash(struct inode *, unsigned long hashval); static inline void insert_inode_hash(struct inode *inode) { @@ -3130,6 +3038,7 @@ extern int sb_min_blocksize(struct super_block *, int); extern int generic_file_mmap(struct file *, struct vm_area_struct *); extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *); extern ssize_t generic_write_checks(struct kiocb *, struct iov_iter *); +int generic_write_checks_count(struct kiocb *iocb, loff_t *count); extern int generic_write_check_limits(struct file *file, loff_t pos, loff_t *count); extern int generic_file_rw_checks(struct file *file_in, struct file *file_out); @@ -3173,6 +3082,7 @@ extern loff_t fixed_size_llseek(struct file *file, loff_t offset, int whence, loff_t size); extern loff_t no_seek_end_llseek_size(struct file *, loff_t, int, loff_t); extern loff_t no_seek_end_llseek(struct file *, loff_t, int); +int rw_verify_area(int, struct file *, const loff_t *, size_t); extern int generic_file_open(struct inode * inode, struct file * filp); extern int nonseekable_open(struct inode * inode, struct file * filp); extern int stream_open(struct inode * inode, struct file * filp); @@ -3322,8 +3232,6 @@ extern int simple_rename(struct user_namespace *, struct inode *, extern void simple_recursive_removal(struct dentry *, void (*callback)(struct dentry *)); extern int noop_fsync(struct file *, loff_t, loff_t, int); -extern void noop_invalidatepage(struct page *page, unsigned int offset, - unsigned int length); extern ssize_t noop_direct_IO(struct kiocb *iocb, struct iov_iter *iter); extern int simple_empty(struct dentry *); extern int simple_write_begin(struct file *file, struct address_space *mapping, @@ -3608,15 +3516,4 @@ extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len, extern int generic_fadvise(struct file *file, loff_t offset, loff_t len, int advice); -/* - * Flush file data before changing attributes. Caller must hold any locks - * required to prevent further writes to this file until we're done setting - * flags. - */ -static inline int inode_drain_writes(struct inode *inode) -{ - inode_dio_wait(inode); - return filemap_write_and_wait(inode->i_mapping); -} - #endif /* _LINUX_FS_H */ |