generic_write_checks(): drop isblk argument
all remaining callers are passing 0; some just obscure that fact. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Родитель
7ec7b94a33
Коммит
0fa6b005af
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@ -409,7 +409,7 @@ v9fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
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size_t count = iov_iter_count(from);
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int err = 0;
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retval = generic_write_checks(file, &origin, &count, 0);
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retval = generic_write_checks(file, &origin, &count);
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if (retval)
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return retval;
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@ -1747,7 +1747,7 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb,
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mutex_lock(&inode->i_mutex);
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current->backing_dev_info = inode_to_bdi(inode);
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err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
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err = generic_write_checks(file, &pos, &count);
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if (err) {
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mutex_unlock(&inode->i_mutex);
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goto out;
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@ -953,7 +953,7 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from)
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/* We can write back this queue in page reclaim */
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current->backing_dev_info = inode_to_bdi(inode);
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err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
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err = generic_write_checks(file, &pos, &count);
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if (err)
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goto out;
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@ -2580,7 +2580,7 @@ ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from)
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*/
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len = iov_iter_count(from);
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rc = generic_write_checks(file, &iocb->ki_pos, &len, 0);
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rc = generic_write_checks(file, &iocb->ki_pos, &len);
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if (rc)
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return rc;
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@ -2684,7 +2684,7 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from)
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mutex_lock(&inode->i_mutex);
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count = iov_iter_count(from);
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rc = generic_write_checks(file, &iocb->ki_pos, &count, 0);
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rc = generic_write_checks(file, &iocb->ki_pos, &count);
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if (rc)
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goto out;
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@ -171,7 +171,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
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}
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}
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ret = generic_write_checks(file, &iocb->ki_pos, &length, 0);
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ret = generic_write_checks(file, &iocb->ki_pos, &length);
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if (ret)
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goto out;
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@ -1167,7 +1167,7 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
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/* We can write back this queue in page reclaim */
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current->backing_dev_info = inode_to_bdi(inode);
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err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
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err = generic_write_checks(file, &pos, &count);
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if (err)
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goto out;
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@ -1420,7 +1420,7 @@ static ssize_t fuse_direct_write_iter(struct kiocb *iocb, struct iov_iter *from)
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/* Don't allow parallel writes to the same file */
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mutex_lock(&inode->i_mutex);
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res = generic_write_checks(file, &iocb->ki_pos, &count, 0);
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res = generic_write_checks(file, &iocb->ki_pos, &count);
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if (!res) {
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iov_iter_truncate(from, count);
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res = fuse_direct_io(&io, from, &iocb->ki_pos, FUSE_DIO_WRITE);
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@ -2841,7 +2841,7 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
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io->done = &wait;
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if (iov_iter_rw(iter) == WRITE) {
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ret = generic_write_checks(file, &pos, &count, 0);
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ret = generic_write_checks(file, &pos, &count);
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if (!ret) {
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iov_iter_truncate(iter, count);
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ret = fuse_direct_io(io, iter, &pos, FUSE_DIO_WRITE);
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@ -177,7 +177,7 @@ ncp_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
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void *bouncebuffer;
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ncp_dbg(1, "enter %pD2\n", file);
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errno = generic_write_checks(file, &pos, &count, 0);
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errno = generic_write_checks(file, &pos, &count);
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if (errno)
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return errno;
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iov_iter_truncate(from, count);
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@ -977,7 +977,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter,
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dfprintk(FILE, "NFS: direct write(%pD2, %zd@%Ld)\n",
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file, count, (long long) pos);
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result = generic_write_checks(file, &pos, &count, 0);
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result = generic_write_checks(file, &pos, &count);
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if (result)
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goto out;
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@ -345,7 +345,7 @@ static ssize_t ntfs_prepare_file_for_write(struct kiocb *iocb,
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"0x%llx, count 0x%zx.", vi->i_ino,
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(unsigned)le32_to_cpu(ni->type),
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(unsigned long long)iocb->ki_pos, count);
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err = generic_write_checks(file, &iocb->ki_pos, &count, S_ISBLK(vi->i_mode));
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err = generic_write_checks(file, &iocb->ki_pos, &count);
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if (unlikely(err))
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goto out;
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iov_iter_truncate(from, count);
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@ -2374,8 +2374,7 @@ relock:
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/* communicate with ocfs2_dio_end_io */
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ocfs2_iocb_set_rw_locked(iocb, rw_level);
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ret = generic_write_checks(file, ppos, &count,
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S_ISBLK(inode->i_mode));
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ret = generic_write_checks(file, ppos, &count);
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if (ret)
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goto out_dio;
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@ -151,7 +151,7 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
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} else
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up_write(&iinfo->i_data_sem);
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retval = generic_write_checks(file, &iocb->ki_pos, &count, 0);
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retval = generic_write_checks(file, &iocb->ki_pos, &count);
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if (retval)
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goto out;
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@ -554,7 +554,7 @@ xfs_file_aio_write_checks(
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int error = 0;
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restart:
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error = generic_write_checks(file, pos, count, S_ISBLK(inode->i_mode));
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error = generic_write_checks(file, pos, count);
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if (error)
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return error;
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@ -2566,7 +2566,7 @@ extern int sb_min_blocksize(struct super_block *, int);
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extern int generic_file_mmap(struct file *, struct vm_area_struct *);
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extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);
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int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk);
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int generic_write_checks(struct file *file, loff_t *pos, size_t *count);
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extern ssize_t generic_file_read_iter(struct kiocb *, struct iov_iter *);
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extern ssize_t __generic_file_write_iter(struct kiocb *, struct iov_iter *);
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extern ssize_t generic_file_write_iter(struct kiocb *, struct iov_iter *);
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63
mm/filemap.c
63
mm/filemap.c
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@ -2260,7 +2260,7 @@ EXPORT_SYMBOL(read_cache_page_gfp);
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* Returns appropriate error code that caller should return or
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* zero in case that write should be allowed.
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*/
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inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk)
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inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count)
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{
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struct inode *inode = file->f_mapping->host;
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unsigned long limit = rlimit(RLIMIT_FSIZE);
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@ -2268,20 +2268,17 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i
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if (unlikely(*pos < 0))
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return -EINVAL;
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if (!isblk) {
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/* FIXME: this is for backwards compatibility with 2.4 */
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if (file->f_flags & O_APPEND)
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*pos = i_size_read(inode);
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/* FIXME: this is for backwards compatibility with 2.4 */
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if (file->f_flags & O_APPEND)
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*pos = i_size_read(inode);
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if (limit != RLIM_INFINITY) {
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if (*pos >= limit) {
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send_sig(SIGXFSZ, current, 0);
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return -EFBIG;
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}
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if (*count > limit - (typeof(limit))*pos) {
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*count = limit - (typeof(limit))*pos;
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}
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if (limit != RLIM_INFINITY) {
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if (*pos >= limit) {
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send_sig(SIGXFSZ, current, 0);
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return -EFBIG;
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}
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if (*count > limit - (typeof(limit))*pos)
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*count = limit - (typeof(limit))*pos;
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}
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/*
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@ -2289,12 +2286,10 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i
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*/
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if (unlikely(*pos + *count > MAX_NON_LFS &&
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!(file->f_flags & O_LARGEFILE))) {
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if (*pos >= MAX_NON_LFS) {
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if (*pos >= MAX_NON_LFS)
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return -EFBIG;
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}
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if (*count > MAX_NON_LFS - (unsigned long)*pos) {
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if (*count > MAX_NON_LFS - (unsigned long)*pos)
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*count = MAX_NON_LFS - (unsigned long)*pos;
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}
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}
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/*
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@ -2304,33 +2299,15 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i
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* exceeded without writing data we send a signal and return EFBIG.
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* Linus frestrict idea will clean these up nicely..
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*/
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if (likely(!isblk)) {
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if (unlikely(*pos >= inode->i_sb->s_maxbytes)) {
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if (*count || *pos > inode->i_sb->s_maxbytes) {
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return -EFBIG;
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}
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/* zero-length writes at ->s_maxbytes are OK */
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if (unlikely(*pos >= inode->i_sb->s_maxbytes)) {
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if (*count || *pos > inode->i_sb->s_maxbytes) {
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return -EFBIG;
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}
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if (unlikely(*pos + *count > inode->i_sb->s_maxbytes))
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*count = inode->i_sb->s_maxbytes - *pos;
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} else {
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#ifdef CONFIG_BLOCK
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loff_t isize;
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if (bdev_read_only(I_BDEV(inode)))
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return -EPERM;
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isize = i_size_read(inode);
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if (*pos >= isize) {
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if (*count || *pos > isize)
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return -ENOSPC;
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}
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if (*pos + *count > isize)
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*count = isize - *pos;
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#else
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return -EPERM;
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#endif
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/* zero-length writes at ->s_maxbytes are OK */
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}
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if (unlikely(*pos + *count > inode->i_sb->s_maxbytes))
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*count = inode->i_sb->s_maxbytes - *pos;
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return 0;
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}
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EXPORT_SYMBOL(generic_write_checks);
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@ -2644,7 +2621,7 @@ ssize_t generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
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size_t count = iov_iter_count(from);
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mutex_lock(&inode->i_mutex);
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ret = generic_write_checks(file, &iocb->ki_pos, &count, 0);
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ret = generic_write_checks(file, &iocb->ki_pos, &count);
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if (!ret && count) {
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iov_iter_truncate(from, count);
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ret = __generic_file_write_iter(iocb, from);
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