diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index aa110476a95b..39f3e12ca752 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -335,6 +335,7 @@ struct inodes_stat_t { #define BLKDISCARDZEROES _IO(0x12,124) #define BLKSECDISCARD _IO(0x12,125) #define BLKROTATIONAL _IO(0x12,126) +#define BLKZEROOUT _IO(0x12,127) #define BMAP_IOCTL 1 /* obsolete - kept for compatibility */ #define FIBMAP _IO(0x00,1) /* bmap access */ @@ -401,7 +402,7 @@ struct inodes_stat_t { #include <linux/cache.h> #include <linux/list.h> #include <linux/radix-tree.h> -#include <linux/prio_tree.h> +#include <linux/rbtree.h> #include <linux/init.h> #include <linux/pid.h> #include <linux/bug.h> @@ -415,6 +416,7 @@ struct inodes_stat_t { #include <linux/migrate_mode.h> #include <linux/uidgid.h> #include <linux/lockdep.h> +#include <linux/percpu-rwsem.h> #include <asm/byteorder.h> @@ -669,7 +671,7 @@ struct address_space { struct radix_tree_root page_tree; /* radix tree of all pages */ spinlock_t tree_lock; /* and lock protecting it */ unsigned int i_mmap_writable;/* count VM_SHARED mappings */ - struct prio_tree_root i_mmap; /* tree of private and shared mappings */ + struct rb_root i_mmap; /* tree of private and shared mappings */ struct list_head i_mmap_nonlinear;/*list VM_NONLINEAR mappings */ struct mutex i_mmap_mutex; /* protect tree, count, list */ /* Protected by tree_lock together with the radix tree */ @@ -724,6 +726,8 @@ struct block_device { int bd_fsfreeze_count; /* Mutex for freeze */ struct mutex bd_fsfreeze_mutex; + /* A semaphore that prevents I/O while block size is being changed */ + struct percpu_rw_semaphore bd_block_size_semaphore; }; /* @@ -741,7 +745,7 @@ int mapping_tagged(struct address_space *mapping, int tag); */ static inline int mapping_mapped(struct address_space *mapping) { - return !prio_tree_empty(&mapping->i_mmap) || + return !RB_EMPTY_ROOT(&mapping->i_mmap) || !list_empty(&mapping->i_mmap_nonlinear); } @@ -1074,7 +1078,11 @@ struct file_handle { unsigned char f_handle[0]; }; -#define get_file(x) atomic_long_inc(&(x)->f_count) +static inline struct file *get_file(struct file *f) +{ + atomic_long_inc(&f->f_count); + return f; +} #define fput_atomic(x) atomic_long_add_unless(&(x)->f_count, -1, 1) #define file_count(x) atomic_long_read(&(x)->f_count) @@ -1126,9 +1134,9 @@ static inline int file_check_writeable(struct file *filp) /* Page cache limit. The filesystems should put that into their s_maxbytes limits, otherwise bad things can happen in VM. */ #if BITS_PER_LONG==32 -#define MAX_LFS_FILESIZE (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) +#define MAX_LFS_FILESIZE (((loff_t)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) #elif BITS_PER_LONG==64 -#define MAX_LFS_FILESIZE 0x7fffffffffffffffUL +#define MAX_LFS_FILESIZE ((loff_t)0x7fffffffffffffff) #endif #define FL_POSIX 1 @@ -2548,6 +2556,8 @@ 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 int generic_file_remap_pages(struct vm_area_struct *, unsigned long addr, + unsigned long size, pgoff_t pgoff); extern int file_read_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size); int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk); extern ssize_t generic_file_aio_read(struct kiocb *, const struct iovec *, unsigned long, loff_t); @@ -2564,6 +2574,8 @@ extern int generic_segment_checks(const struct iovec *iov, unsigned long *nr_segs, size_t *count, int access_flags); /* fs/block_dev.c */ +extern ssize_t blkdev_aio_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos); extern ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos); extern int blkdev_fsync(struct file *filp, loff_t start, loff_t end, |