nfs_vm_page_mkwrite() should wait until the page cache invalidation
is finished. This is the second patch in a 2 patch series to deprecate
the NFS client's reliance on nfs_release_page() in the context of
nfs_invalidate_mapping().
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfs/file.c | 3 +++
fs/nfs/inode.c | 1 +
2 files changed, 4 insertions(+)
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 41963ffca597..e679d24c39d3 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -623,6 +623,9 @@ static int nfs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
/* make sure the cache has finished storing the page */
nfs_fscache_wait_on_page_write(NFS_I(inode), page);
+ wait_on_bit_action(&NFS_I(inode)->flags, NFS_INO_INVALIDATING,
+ nfs_wait_bit_killable, TASK_KILLABLE);
+
lock_page(page);
mapping = page_file_mapping(page);
if (mapping != inode->i_mapping)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 8edb7d049565..d42dff6d5e98 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1035,6 +1035,7 @@ static int nfs_invalidate_mapping(struct inode *inode, struct address_space *map
if (mapping->nrpages != 0) {
if (S_ISREG(inode->i_mode)) {
+ unmap_mapping_range(mapping, 0, 0, 0);
ret = nfs_sync_mapping(mapping);
if (ret < 0)
return ret;
--
2.1.0
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