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Merge tag 'nfs-for-5.3-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

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Pull NFS client bugfix from Trond Myklebust:
 "Regression fix inode fileid checks in attribute revalidation code"

* tag 'nfs-for-5.3-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: Fix inode fileid checks in attribute revalidation code
This commit is contained in:
Linus Torvalds
2019-09-04 11:09:53 -07:00
parent 089cf7f6ec eb3d8f4223
commit 3b47fd5ca9
1 changed files with 10 additions and 8 deletions
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18
fs/nfs/inode.c
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@@ -1403,11 +1403,12 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
return 0;
/* No fileid? Just exit */
if (!(fattr->valid & NFS_ATTR_FATTR_FILEID))
return 0;
if (!(fattr->valid & NFS_ATTR_FATTR_FILEID)) {
/* Only a mounted-on-fileid? Just exit */
if (fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
return 0;
/* Has the inode gone and changed behind our back? */
if (nfsi->fileid != fattr->fileid) {
} else if (nfsi->fileid != fattr->fileid) {
/* Is this perhaps the mounted-on fileid? */
if ((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) &&
nfsi->fileid == fattr->mounted_on_fileid)
@@ -1807,11 +1808,12 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
nfs_display_fhandle_hash(NFS_FH(inode)),
atomic_read(&inode->i_count), fattr->valid);
/* No fileid? Just exit */
if (!(fattr->valid & NFS_ATTR_FATTR_FILEID))
return 0;
if (!(fattr->valid & NFS_ATTR_FATTR_FILEID)) {
/* Only a mounted-on-fileid? Just exit */
if (fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
return 0;
/* Has the inode gone and changed behind our back? */
if (nfsi->fileid != fattr->fileid) {
} else if (nfsi->fileid != fattr->fileid) {
/* Is this perhaps the mounted-on fileid? */
if ((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) &&
nfsi->fileid == fattr->mounted_on_fileid)