diff options
Diffstat (limited to 'fs/btrfs/file.c')
| -rw-r--r-- | fs/btrfs/file.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 2c14312b05e8..dff89d04fd16 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1819,7 +1819,7 @@ static ssize_t __btrfs_direct_write(struct kiocb *iocb, struct iov_iter *from) loff_t endbyte; int err; - written = generic_file_direct_write(iocb, from); + written = btrfs_direct_IO(iocb, from); if (written < 0 || !iov_iter_count(from)) return written; @@ -3476,9 +3476,26 @@ static int btrfs_file_open(struct inode *inode, struct file *filp) return generic_file_open(inode, filp); } +static ssize_t btrfs_file_read_iter(struct kiocb *iocb, struct iov_iter *to) +{ + ssize_t ret = 0; + + if (iocb->ki_flags & IOCB_DIRECT) { + struct inode *inode = file_inode(iocb->ki_filp); + + inode_lock_shared(inode); + ret = btrfs_direct_IO(iocb, to); + inode_unlock_shared(inode); + if (ret < 0) + return ret; + } + + return generic_file_buffered_read(iocb, to, ret); +} + const struct file_operations btrfs_file_operations = { .llseek = btrfs_file_llseek, - .read_iter = generic_file_read_iter, + .read_iter = btrfs_file_read_iter, .splice_read = generic_file_splice_read, .write_iter = btrfs_file_write_iter, .mmap = btrfs_file_mmap, |