For filesystems such as nilfs2 and xfs that use block_page_mkwrite, modify that
function to wait for pending writeback before allowing the page to become
writable. This is needed to stabilize pages during writeback for those two
filesystems.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
fs/buffer.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/fs/buffer.c b/fs/buffer.c
index a08bb8e..0e7fa16 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2367,8 +2367,10 @@ block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
ret = VM_FAULT_OOM;
else /* -ENOSPC, -EIO, etc */
ret = VM_FAULT_SIGBUS;
- } else
+ } else {
+ wait_on_page_writeback(page);
ret = VM_FAULT_LOCKED;
+ }
out:
return ret;
--
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