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Subject[PATCH 4/4] Unionfs: ensure we have lower dentries in d_iput
Date
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
---
fs/unionfs/dentry.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/fs/unionfs/dentry.c b/fs/unionfs/dentry.c
index d969640..cd15243 100644
--- a/fs/unionfs/dentry.c
+++ b/fs/unionfs/dentry.c
@@ -507,9 +507,10 @@ static void unionfs_d_iput(struct dentry *dentry, struct inode *inode)
{
int bindex, rc;

+ BUG_ON(!dentry);
unionfs_read_lock(dentry->d_sb, UNIONFS_SMUTEX_CHILD);

- if (dbstart(dentry) < 0)
+ if (!UNIONFS_D(dentry) || dbstart(dentry) < 0)
goto drop_lower_inodes;
for (bindex = dbstart(dentry); bindex <= dbend(dentry); bindex++) {
if (unionfs_lower_mnt_idx(dentry, bindex)) {
--
1.5.2.2


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