diff options
Diffstat (limited to 'fs/direct-io.c')
| -rw-r--r-- | fs/direct-io.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/direct-io.c b/fs/direct-io.c index cb5337d8c273..602e8441bc0f 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -1169,6 +1169,16 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, } } + /* Once we sampled i_size check for reads beyond EOF */ + dio->i_size = i_size_read(inode); + if (iov_iter_rw(iter) == READ && offset >= dio->i_size) { + if (dio->flags & DIO_LOCKING) + mutex_unlock(&inode->i_mutex); + kmem_cache_free(dio_cache, dio); + retval = 0; + goto out; + } + /* * For file extending writes updating i_size before data writeouts * complete can expose uninitialized blocks in dumb filesystems. @@ -1222,7 +1232,6 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, sdio.next_block_for_io = -1; dio->iocb = iocb; - dio->i_size = i_size_read(inode); spin_lock_init(&dio->bio_lock); dio->refcount = 1; |