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authorTrond Myklebust <trond.myklebust@primarydata.com>2014-01-13 12:08:11 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-01-13 12:08:11 -0500
commitd8c951c313ed1d7144b55c0d56f7c53220044dda (patch)
tree51d2a904da45349403b0db80fb9f8812967ec5dd /fs/nfs/inode.c
parent16a6ddc70920a0686dbf90e092a539c1a4fd7b77 (diff)
downloadop-kernel-dev-d8c951c313ed1d7144b55c0d56f7c53220044dda.zip
op-kernel-dev-d8c951c313ed1d7144b55c0d56f7c53220044dda.tar.gz
NFSv4.1: Don't trust attributes if a pNFS LAYOUTCOMMIT is outstanding
If a LAYOUTCOMMIT is outstanding, then chances are that the metadata server may still be returning incorrect values for the change attribute, ctime, mtime and/or size. Just ignore those attributes for now, and wait for the LAYOUTCOMMIT rpc call to finish. Reported-by: shaobingqing <shaobingqing@bwstor.com.cn> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/inode.c')
-rw-r--r--fs/nfs/inode.c19
1 files changed, 17 insertions, 2 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 5feec23..c63e152 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1283,12 +1283,28 @@ static int nfs_inode_attrs_need_update(const struct inode *inode, const struct n
((long)nfsi->attr_gencount - (long)nfs_read_attr_generation_counter() > 0);
}
+/*
+ * Don't trust the change_attribute, mtime, ctime or size if
+ * a pnfs LAYOUTCOMMIT is outstanding
+ */
+static void nfs_inode_attrs_handle_layoutcommit(struct inode *inode,
+ struct nfs_fattr *fattr)
+{
+ if (pnfs_layoutcommit_outstanding(inode))
+ fattr->valid &= ~(NFS_ATTR_FATTR_CHANGE |
+ NFS_ATTR_FATTR_MTIME |
+ NFS_ATTR_FATTR_CTIME |
+ NFS_ATTR_FATTR_SIZE);
+}
+
static int nfs_refresh_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
{
int ret;
trace_nfs_refresh_inode_enter(inode);
+ nfs_inode_attrs_handle_layoutcommit(inode, fattr);
+
if (nfs_inode_attrs_need_update(inode, fattr))
ret = nfs_update_inode(inode, fattr);
else
@@ -1518,8 +1534,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if (new_isize != cur_isize) {
/* Do we perhaps have any outstanding writes, or has
* the file grown beyond our last write? */
- if ((nfsi->npages == 0 && !test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) ||
- new_isize > cur_isize) {
+ if ((nfsi->npages == 0) || new_isize > cur_isize) {
i_size_write(inode, new_isize);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
}
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