zonefs: Convert to using invalidate_lock
Use invalidate_lock instead of zonefs' private i_mmap_sem. The intended
purpose is exactly the same.
CC: Damien Le Moal <damien.lemoal@wdc.com>
CC: Johannes Thumshirn <jth@kernel.org>
CC: <linux-fsdevel@vger.kernel.org>
Acked-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/zonefs/zonefs.h b/fs/zonefs/zonefs.h
index 5114190..7b14790 100644
--- a/fs/zonefs/zonefs.h
+++ b/fs/zonefs/zonefs.h
@@ -70,12 +70,11 @@ struct zonefs_inode_info {
* and changes to the inode private data, and in particular changes to
* a sequential file size on completion of direct IO writes.
* Serialization of mmap read IOs with truncate and syscall IO
- * operations is done with i_mmap_sem in addition to i_truncate_mutex.
- * Only zonefs_seq_file_truncate() takes both lock (i_mmap_sem first,
- * i_truncate_mutex second).
+ * operations is done with invalidate_lock in addition to
+ * i_truncate_mutex. Only zonefs_seq_file_truncate() takes both lock
+ * (invalidate_lock first, i_truncate_mutex second).
*/
struct mutex i_truncate_mutex;
- struct rw_semaphore i_mmap_sem;
/* guarded by i_truncate_mutex */
unsigned int i_wr_refcnt;