diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 6edf0105dbc8..69aad1060c48 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -5101,16 +5101,33 @@ static int f2fs_dio_write_end_io(struct kiocb *iocb, ssize_t size, int error, return 0; } +static bool f2fs_valid_write_stream(struct f2fs_sb_info *sbi, u8 write_stream) +{ + int i; + + if (!write_stream) + return true; + if (!f2fs_is_multi_device(sbi)) + return write_stream <= bdev_max_write_streams(sbi->sb->s_bdev); + + for (i = 0; i < sbi->s_ndevs; i++) + if (write_stream > bdev_max_write_streams(FDEV(i).bdev)) + return false; + return true; +} + static void f2fs_dio_write_submit_io(const struct iomap_iter *iter, struct bio *bio, loff_t file_offset) { struct inode *inode = iter->inode; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct kiocb *iocb = iter->private; enum log_type type = f2fs_rw_hint_to_seg_type(sbi, inode->i_write_hint); enum temp_type temp = f2fs_get_segment_temp(sbi, type); bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi, DATA, temp); bio->bi_write_stream = + iocb->ki_write_stream ? iocb->ki_write_stream : f2fs_io_type_to_write_stream(bio->bi_bdev, DATA, temp); f2fs_dio_iostat_start(sbi, bio); blk_crypto_submit_bio(bio); @@ -5150,6 +5167,11 @@ static ssize_t f2fs_dio_write_iter(struct kiocb *iocb, struct iov_iter *from, trace_f2fs_direct_IO_enter(inode, iocb, count, WRITE); + if (!f2fs_valid_write_stream(sbi, iocb->ki_write_stream)) { + ret = -EINVAL; + goto out; + } + if (iocb->ki_flags & IOCB_NOWAIT) { /* f2fs_convert_inline_inode() and block allocation can block */ if (f2fs_has_inline_data(inode) || @@ -5187,7 +5209,7 @@ static ssize_t f2fs_dio_write_iter(struct kiocb *iocb, struct iov_iter *from, if (pos + count > inode->i_size) dio_flags |= IOMAP_DIO_FORCE_WAIT; dio = __iomap_dio_rw(iocb, from, &f2fs_iomap_ops, - &f2fs_iomap_dio_write_ops, dio_flags, NULL, 0); + &f2fs_iomap_dio_write_ops, dio_flags, iocb, 0); if (IS_ERR_OR_NULL(dio)) { ret = PTR_ERR_OR_ZERO(dio); if (ret == -ENOTBLK)