Use the same fallback to normal IO in case of write operations beyond EOF as fat direct IO. This patch fixes
fsx file -d -Z -r 4096 -w 4096 Report: 129(129 mod 256): TRUNCATE DOWN from 0x3ff01 to 0xb3f6 130(130 mod 256): WRITE 0x22000 thru 0x2dfff (0xc000 bytes) HOLE Thanks to Jan for helping me on this problem. Cc: Jan Kara <[email protected]> Cc: Andrew Morton <[email protected]> Signed-off-by: Fabian Frederick <[email protected]> --- Ideal solution suggested by Jan Kara would be to use cont_write_begin but affs direct_IO shouldn't be used a lot anyway... fs/affs/file.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/affs/file.c b/fs/affs/file.c index 7e83ba2..d2468bf 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -398,6 +398,13 @@ affs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, size_t count = iov_iter_count(iter); ssize_t ret; + if (rw == WRITE) { + loff_t size = offset + count; + + if (AFFS_I(inode)->mmu_private < size) + return 0; + } + ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, affs_get_block); if (ret < 0 && (rw & WRITE)) affs_write_failed(mapping, offset + count); -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
