diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/read_write.c | 43 |
1 files changed, 21 insertions, 22 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 42a027719324..4fb797822567 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -419,17 +419,6 @@ static ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, lo return ret; } -ssize_t __vfs_read(struct file *file, char __user *buf, size_t count, - loff_t *pos) -{ - if (file->f_op->read) - return file->f_op->read(file, buf, count, pos); - else if (file->f_op->read_iter) - return new_sync_read(file, buf, count, pos); - else - return -EINVAL; -} - ssize_t __kernel_read(struct file *file, void *buf, size_t count, loff_t *pos) { mm_segment_t old_fs = get_fs(); @@ -443,7 +432,12 @@ ssize_t __kernel_read(struct file *file, void *buf, size_t count, loff_t *pos) if (count > MAX_RW_COUNT) count = MAX_RW_COUNT; set_fs(KERNEL_DS); - ret = __vfs_read(file, (void __user *)buf, count, pos); + if (file->f_op->read) + ret = file->f_op->read(file, (void __user *)buf, count, pos); + else if (file->f_op->read_iter) + ret = new_sync_read(file, (void __user *)buf, count, pos); + else + ret = -EINVAL; set_fs(old_fs); if (ret > 0) { fsnotify_access(file); @@ -476,17 +470,22 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) return -EFAULT; ret = rw_verify_area(READ, file, pos, count); - if (!ret) { - if (count > MAX_RW_COUNT) - count = MAX_RW_COUNT; - ret = __vfs_read(file, buf, count, pos); - if (ret > 0) { - fsnotify_access(file); - add_rchar(current, ret); - } - inc_syscr(current); - } + if (ret) + return ret; + if (count > MAX_RW_COUNT) + count = MAX_RW_COUNT; + if (file->f_op->read) + ret = file->f_op->read(file, buf, count, pos); + else if (file->f_op->read_iter) + ret = new_sync_read(file, buf, count, pos); + else + ret = -EINVAL; + if (ret > 0) { + fsnotify_access(file); + add_rchar(current, ret); + } + inc_syscr(current); return ret; } |