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-rw-r--r--fs/dax.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/dax.c b/fs/dax.c
index c45598b912e1..e9cf8b4cd234 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1086,8 +1086,12 @@ dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter,
loff_t pos = iocb->ki_pos, ret = 0, done = 0;
unsigned flags = 0;
- if (iov_iter_rw(iter) == WRITE)
+ if (iov_iter_rw(iter) == WRITE) {
+ lockdep_assert_held_exclusive(&inode->i_rwsem);
flags |= IOMAP_WRITE;
+ } else {
+ lockdep_assert_held(&inode->i_rwsem);
+ }
while (iov_iter_count(iter)) {
ret = iomap_apply(inode, pos, iov_iter_count(iter), flags, ops,