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authorTrond Myklebust <trond.myklebust@primarydata.com>2015-03-03 00:06:35 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-03-03 13:58:08 -0500
commitef070dcb3989f553f5d84edf555eebc7e204099d (patch)
tree57a10c226e43b7eb28b03786591164686d88fbf5 /fs/nfs
parent874f946376de57c8d6230b30ad71f742883fee3a (diff)
downloadlinux-ef070dcb3989f553f5d84edf555eebc7e204099d.tar.bz2
NFS: Don't write enable new pages while an invalidation is proceeding
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@primarydata.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/file.c3
-rw-r--r--fs/nfs/inode.c1
2 files changed, 4 insertions, 0 deletions
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;