diff options
author | David Howells <dhowells@redhat.com> | 2020-04-11 10:50:45 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-23 11:36:25 +0300 |
commit | 42e343cf3285c4525db800a264e51571ae66310c (patch) | |
tree | 7ba48ffcb0abf60b5d5a9cf385acd318ebcabd66 /fs/afs | |
parent | 8c3e4ba0fa7acec881ee87177eab2b28a2c78062 (diff) | |
download | linux-42e343cf3285c4525db800a264e51571ae66310c.tar.xz |
afs: Fix afs_d_validate() to set the right directory version
commit 40fc81027f892284ce31f8b6de1e497f5b47e71f upstream.
If a dentry's version is somewhere between invalid_before and the current
directory version, we should be setting it forward to the current version,
not backwards to the invalid_before version. Note that we're only doing
this at all because dentry::d_fsdata isn't large enough on a 32-bit system.
Fix this by using a separate variable for invalid_before so that we don't
accidentally clobber the current dir version.
Fixes: a4ff7401fbfa ("afs: Keep track of invalid-before version for dentry coherency")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/afs')
-rw-r--r-- | fs/afs/dir.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 31d297e0f765..6cc685c5b19b 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -1032,7 +1032,7 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags) struct dentry *parent; struct inode *inode; struct key *key; - afs_dataversion_t dir_version; + afs_dataversion_t dir_version, invalid_before; long de_version; int ret; @@ -1084,8 +1084,8 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags) if (de_version == (long)dir_version) goto out_valid_noupdate; - dir_version = dir->invalid_before; - if (de_version - (long)dir_version >= 0) + invalid_before = dir->invalid_before; + if (de_version - (long)invalid_before >= 0) goto out_valid; _debug("dir modified"); |