[PATCH v2 4/4] ocfs2: add duplicative ino number check

[Gang He]

Add duplicative ino number check, to avoid adding a file into the
file check list when this file is being checked.

Signed-off-by: Gang He <g...@suse.com>
---
 fs/ocfs2/filecheck.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/fs/ocfs2/filecheck.c b/fs/ocfs2/filecheck.c
index a94c531..f65f2b2 100644
--- a/fs/ocfs2/filecheck.c
+++ b/fs/ocfs2/filecheck.c
@@ -354,6 +354,22 @@ static ssize_t ocfs2_filecheck_attr_show(struct kobject 
*kobj,
 }
 
 static inline int
+ocfs2_filecheck_is_dup_entry(struct ocfs2_filecheck_sysfs_entry *ent,
+                               unsigned long ino)
+{
+       struct ocfs2_filecheck_entry *p;
+
+       list_for_each_entry(p, &ent->fs_fcheck->fc_head, fe_list) {
+               if (!p->fe_done) {
+                       if (p->fe_ino == ino)
+                               return 1;
+               }
+       }
+
+       return 0;
+}
+
+static inline int
 ocfs2_filecheck_erase_entry(struct ocfs2_filecheck_sysfs_entry *ent)
 {
        struct ocfs2_filecheck_entry *p;
@@ -467,7 +483,10 @@ static ssize_t ocfs2_filecheck_attr_store(struct kobject 
*kobj,
        }
 
        spin_lock(&ent->fs_fcheck->fc_lock);
-       if ((ent->fs_fcheck->fc_size >= ent->fs_fcheck->fc_max) &&
+       if (ocfs2_filecheck_is_dup_entry(ent, args.fa_ino)) {
+               ret = -EEXIST;
+               kfree(entry);
+       } else if ((ent->fs_fcheck->fc_size >= ent->fs_fcheck->fc_max) &&
                (ent->fs_fcheck->fc_done == 0)) {
                mlog(ML_NOTICE,
                "Cannot do more file check "
-- 
1.8.5.6