diff options
| -rw-r--r-- | fs/smb/client/inode.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c index 35c5557d5ea1..4b817fd528f7 100644 --- a/fs/smb/client/inode.c +++ b/fs/smb/client/inode.c @@ -2694,10 +2694,28 @@ cifs_dentry_needs_reval(struct dentry *dentry) if (!lookupCacheEnabled) return true; - cfid = find_cached_dir(tcon->cfids, dentry->d_parent, CFID_LOOKUP_DENTRY); - if (cfid) { - close_cached_dir(cfid); - return false; + if (!IS_ROOT(dentry)) { + cfid = find_cached_dir(tcon->cfids, dentry->d_parent, CFID_LOOKUP_DENTRY); + if (cfid) { + /* + * We hold a lease for the cached parent. + * So as long as this child is within cached dir lifetime, we don't need to + * revalidate it. + * + * Since cfid expiration is based on access time, use it for comparison + * instead of creation time. + */ + if (time_before(cifs_i->time, cfid->atime - dir_cache_timeout * HZ)) { + close_cached_dir(cfid); + return true; + } + + /* + * From cached dir perspective, we're done -- attr caching (ac*max) may + * have different requirements, so let the checks go through. + */ + close_cached_dir(cfid); + } } /* |