Messages in this thread Patch in this message | | | Subject | [PATCH 2/3] fs: block_page_mkwrite should wait for writeback to finish | From | "Darrick J. Wong" <> | Date | Thu, 19 May 2011 15:48:55 -0700 |
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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@us.ibm.com> --- 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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