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Diffstat (limited to 'fs/9p/fid.c')
-rw-r--r--fs/9p/fid.c26
1 files changed, 5 insertions, 21 deletions
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index 49de4264db9a..ddf618936d8a 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -43,25 +43,9 @@
43 43
44int v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid) 44int v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid)
45{ 45{
46 struct v9fs_dentry *dent;
47
48 p9_debug(P9_DEBUG_VFS, "fid %d dentry %s\n",
49 fid->fid, dentry->d_name.name);
50
51 dent = dentry->d_fsdata;
52 if (!dent) {
53 dent = kmalloc(sizeof(struct v9fs_dentry), GFP_KERNEL);
54 if (!dent)
55 return -ENOMEM;
56
57 INIT_HLIST_HEAD(&dent->fidlist);
58 dentry->d_fsdata = dent;
59 }
60
61 spin_lock(&dentry->d_lock); 46 spin_lock(&dentry->d_lock);
62 hlist_add_head(&fid->dlist, &dent->fidlist); 47 hlist_add_head(&fid->dlist, (struct hlist_head *)&dentry->d_fsdata);
63 spin_unlock(&dentry->d_lock); 48 spin_unlock(&dentry->d_lock);
64
65 return 0; 49 return 0;
66} 50}
67 51
@@ -75,18 +59,18 @@ int v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid)
75 59
76static struct p9_fid *v9fs_fid_find(struct dentry *dentry, kuid_t uid, int any) 60static struct p9_fid *v9fs_fid_find(struct dentry *dentry, kuid_t uid, int any)
77{ 61{
78 struct v9fs_dentry *dent;
79 struct p9_fid *fid, *ret; 62 struct p9_fid *fid, *ret;
80 63
81 p9_debug(P9_DEBUG_VFS, " dentry: %s (%p) uid %d any %d\n", 64 p9_debug(P9_DEBUG_VFS, " dentry: %s (%p) uid %d any %d\n",
82 dentry->d_name.name, dentry, from_kuid(&init_user_ns, uid), 65 dentry->d_name.name, dentry, from_kuid(&init_user_ns, uid),
83 any); 66 any);
84 dent = (struct v9fs_dentry *) dentry->d_fsdata;
85 ret = NULL; 67 ret = NULL;
86 if (dent) { 68 /* we'll recheck under lock if there's anything to look in */
69 if (dentry->d_fsdata) {
70 struct hlist_head *h = (struct hlist_head *)&dentry->d_fsdata;
87 struct hlist_node *n; 71 struct hlist_node *n;
88 spin_lock(&dentry->d_lock); 72 spin_lock(&dentry->d_lock);
89 hlist_for_each_entry(fid, n, &dent->fidlist, dlist) { 73 hlist_for_each_entry(fid, n, h, dlist) {
90 if (any || uid_eq(fid->uid, uid)) { 74 if (any || uid_eq(fid->uid, uid)) {
91 ret = fid; 75 ret = fid;
92 break; 76 break;