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LU-3963 obdclass: convert to linux list api
[fs/lustre-release.git] / lustre / obdclass / idmap.c
index 4ee3685..df6c57b 100644 (file)
 
 #define DEBUG_SUBSYSTEM S_SEC
 
+#include <libcfs/lucache.h>
+
 #include <lustre_idmap.h>
 #include <md_object.h>
 #include <obd_support.h>
 
 #define lustre_get_group_info(group_info) do {             \
-        cfs_atomic_inc(&(group_info)->usage);              \
+       atomic_inc(&(group_info)->usage);              \
 } while (0)
 
 #define lustre_put_group_info(group_info) do {             \
-       if (cfs_atomic_dec_and_test(&(group_info)->usage)) \
+       if (atomic_dec_and_test(&(group_info)->usage)) \
                groups_free(group_info);                   \
 } while (0)
 
@@ -71,7 +73,8 @@ static int lustre_groups_search(struct group_info *group_info,
        right = group_info->ngroups;
        while (left < right) {
                int mid = (left + right) / 2;
-               int cmp = grp - CFS_GROUP_AT(group_info, mid);
+               int cmp = grp -
+                       from_kgid(&init_user_ns, CFS_GROUP_AT(group_info, mid));
 
                if (cmp > 0)
                        left = mid + 1;
@@ -111,24 +114,27 @@ void lustre_groups_sort(struct group_info *group_info)
                 ; /* nothing */
         stride /= 3;
 
-        while (stride) {
-                max = gidsetsize - stride;
-                for (base = 0; base < max; base++) {
-                        int left = base;
-                        int right = left + stride;
-                        gid_t tmp = CFS_GROUP_AT(group_info, right);
-
-                        while (left >= 0 &&
-                               CFS_GROUP_AT(group_info, left) > tmp) {
-                                CFS_GROUP_AT(group_info, right) =
-                                    CFS_GROUP_AT(group_info, left);
-                                right = left;
-                                left -= stride;
-                        }
-                        CFS_GROUP_AT(group_info, right) = tmp;
-                }
-                stride /= 3;
-        }
+       while (stride) {
+               max = gidsetsize - stride;
+               for (base = 0; base < max; base++) {
+                       int left = base;
+                       int right = left + stride;
+                       gid_t tmp = from_kgid(&init_user_ns,
+                                             CFS_GROUP_AT(group_info, right));
+
+                       while (left >= 0 &&
+                              tmp < from_kgid(&init_user_ns,
+                                              CFS_GROUP_AT(group_info, left))) {
+                               CFS_GROUP_AT(group_info, right) =
+                                       CFS_GROUP_AT(group_info, left);
+                               right = left;
+                               left -= stride;
+                       }
+                       CFS_GROUP_AT(group_info, right) =
+                                               make_kgid(&init_user_ns, tmp);
+               }
+               stride /= 3;
+       }
 }
 EXPORT_SYMBOL(lustre_groups_sort);
 
@@ -162,10 +168,10 @@ int lustre_in_group_p(struct lu_ucred *mu, gid_t grp)
 EXPORT_SYMBOL(lustre_in_group_p);
 
 struct lustre_idmap_entry {
-        cfs_list_t       lie_rmt_uid_hash; /* hashed as lie_rmt_uid; */
-        cfs_list_t       lie_lcl_uid_hash; /* hashed as lie_lcl_uid; */
-        cfs_list_t       lie_rmt_gid_hash; /* hashed as lie_rmt_gid; */
-        cfs_list_t       lie_lcl_gid_hash; /* hashed as lie_lcl_gid; */
+       struct list_head       lie_rmt_uid_hash; /* hashed as lie_rmt_uid; */
+       struct list_head       lie_lcl_uid_hash; /* hashed as lie_lcl_uid; */
+       struct list_head       lie_rmt_gid_hash; /* hashed as lie_rmt_gid; */
+       struct list_head       lie_lcl_gid_hash; /* hashed as lie_lcl_gid; */
         uid_t            lie_rmt_uid;      /* remote uid */
         uid_t            lie_lcl_uid;      /* local uid */
         gid_t            lie_rmt_gid;      /* remote gid */
@@ -187,10 +193,10 @@ struct lustre_idmap_entry *idmap_entry_alloc(uid_t rmt_uid, uid_t lcl_uid,
         if (e == NULL)
                 return NULL;
 
-        CFS_INIT_LIST_HEAD(&e->lie_rmt_uid_hash);
-        CFS_INIT_LIST_HEAD(&e->lie_lcl_uid_hash);
-        CFS_INIT_LIST_HEAD(&e->lie_rmt_gid_hash);
-        CFS_INIT_LIST_HEAD(&e->lie_lcl_gid_hash);
+       INIT_LIST_HEAD(&e->lie_rmt_uid_hash);
+       INIT_LIST_HEAD(&e->lie_lcl_uid_hash);
+       INIT_LIST_HEAD(&e->lie_rmt_gid_hash);
+       INIT_LIST_HEAD(&e->lie_lcl_gid_hash);
         e->lie_rmt_uid = rmt_uid;
         e->lie_lcl_uid = lcl_uid;
         e->lie_rmt_gid = rmt_gid;
@@ -201,15 +207,11 @@ struct lustre_idmap_entry *idmap_entry_alloc(uid_t rmt_uid, uid_t lcl_uid,
 
 static void idmap_entry_free(struct lustre_idmap_entry *e)
 {
-        if (!cfs_list_empty(&e->lie_rmt_uid_hash))
-                cfs_list_del(&e->lie_rmt_uid_hash);
-        if (!cfs_list_empty(&e->lie_lcl_uid_hash))
-                cfs_list_del(&e->lie_lcl_uid_hash);
-        if (!cfs_list_empty(&e->lie_rmt_gid_hash))
-                cfs_list_del(&e->lie_rmt_gid_hash);
-        if (!cfs_list_empty(&e->lie_lcl_gid_hash))
-                cfs_list_del(&e->lie_lcl_gid_hash);
-        OBD_FREE_PTR(e);
+       list_del(&e->lie_rmt_uid_hash);
+       list_del(&e->lie_lcl_uid_hash);
+       list_del(&e->lie_rmt_gid_hash);
+       list_del(&e->lie_lcl_gid_hash);
+       OBD_FREE_PTR(e);
 }
 
 /*
@@ -223,11 +225,11 @@ struct lustre_idmap_entry *idmap_search_entry(struct lustre_idmap_table *t,
                                               uid_t rmt_uid, uid_t lcl_uid,
                                               gid_t rmt_gid, gid_t lcl_gid)
 {
-        cfs_list_t *head;
+       struct list_head *head;
         struct lustre_idmap_entry *e;
 
         head = &t->lit_idmaps[RMT_UIDMAP_IDX][lustre_idmap_hashfunc(rmt_uid)];
-        cfs_list_for_each_entry(e, head, lie_rmt_uid_hash)
+       list_for_each_entry(e, head, lie_rmt_uid_hash)
                 if (e->lie_rmt_uid == rmt_uid) {
                         if (e->lie_lcl_uid == lcl_uid) {
                                 if (e->lie_rmt_gid == rmt_gid &&
@@ -244,7 +246,7 @@ struct lustre_idmap_entry *idmap_search_entry(struct lustre_idmap_table *t,
                 }
 
         head = &t->lit_idmaps[RMT_GIDMAP_IDX][lustre_idmap_hashfunc(rmt_gid)];
-        cfs_list_for_each_entry(e, head, lie_rmt_gid_hash)
+       list_for_each_entry(e, head, lie_rmt_gid_hash)
                 if (e->lie_rmt_gid == rmt_gid) {
                         if (e->lie_lcl_gid == lcl_gid) {
                                 if (unlikely(e->lie_rmt_uid == rmt_uid &&
@@ -264,36 +266,36 @@ struct lustre_idmap_entry *idmap_search_entry(struct lustre_idmap_table *t,
         return NULL;
 }
 
-static __u32 idmap_lookup_uid(cfs_list_t *hash, int reverse,
+static __u32 idmap_lookup_uid(struct list_head *hash, int reverse,
                               __u32 uid)
 {
-        cfs_list_t *head = &hash[lustre_idmap_hashfunc(uid)];
-        struct lustre_idmap_entry *e;
+       struct list_head *head = &hash[lustre_idmap_hashfunc(uid)];
+       struct lustre_idmap_entry *e;
 
-        if (!reverse) {
-                cfs_list_for_each_entry(e, head, lie_rmt_uid_hash)
-                        if (e->lie_rmt_uid == uid)
-                                return e->lie_lcl_uid;
-        } else {
-                cfs_list_for_each_entry(e, head, lie_lcl_uid_hash)
-                        if (e->lie_lcl_uid == uid)
-                                return e->lie_rmt_uid;
-        }
+       if (!reverse) {
+               list_for_each_entry(e, head, lie_rmt_uid_hash)
+                       if (e->lie_rmt_uid == uid)
+                               return e->lie_lcl_uid;
+       } else {
+               list_for_each_entry(e, head, lie_lcl_uid_hash)
+                       if (e->lie_lcl_uid == uid)
+                               return e->lie_rmt_uid;
+       }
 
-        return CFS_IDMAP_NOTFOUND;
+       return CFS_IDMAP_NOTFOUND;
 }
 
-static __u32 idmap_lookup_gid(cfs_list_t *hash, int reverse, __u32 gid)
+static __u32 idmap_lookup_gid(struct list_head *hash, int reverse, __u32 gid)
 {
-        cfs_list_t *head = &hash[lustre_idmap_hashfunc(gid)];
+       struct list_head *head = &hash[lustre_idmap_hashfunc(gid)];
         struct lustre_idmap_entry *e;
 
         if (!reverse) {
-                cfs_list_for_each_entry(e, head, lie_rmt_gid_hash)
+               list_for_each_entry(e, head, lie_rmt_gid_hash)
                         if (e->lie_rmt_gid == gid)
                                 return e->lie_lcl_gid;
         } else {
-                cfs_list_for_each_entry(e, head, lie_lcl_gid_hash)
+               list_for_each_entry(e, head, lie_lcl_gid_hash)
                         if (e->lie_lcl_gid == gid)
                                 return e->lie_rmt_gid;
         }
@@ -318,32 +320,32 @@ int lustre_idmap_add(struct lustre_idmap_table *t,
                        return -ENOMEM;
 
                spin_lock(&t->lit_lock);
-                e1 = idmap_search_entry(t, ruid, luid, rgid, lgid);
-                if (e1 == NULL) {
-                        cfs_list_add_tail(&e0->lie_rmt_uid_hash,
-                                          &t->lit_idmaps[RMT_UIDMAP_IDX]
-                                          [lustre_idmap_hashfunc(ruid)]);
-                        cfs_list_add_tail(&e0->lie_lcl_uid_hash,
-                                          &t->lit_idmaps[LCL_UIDMAP_IDX]
-                                          [lustre_idmap_hashfunc(luid)]);
-                        cfs_list_add_tail(&e0->lie_rmt_gid_hash,
-                                          &t->lit_idmaps[RMT_GIDMAP_IDX]
-                                          [lustre_idmap_hashfunc(rgid)]);
-                        cfs_list_add_tail(&e0->lie_lcl_gid_hash,
-                                          &t->lit_idmaps[LCL_GIDMAP_IDX]
-                                          [lustre_idmap_hashfunc(lgid)]);
-                }
+               e1 = idmap_search_entry(t, ruid, luid, rgid, lgid);
+               if (e1 == NULL) {
+                       list_add_tail(&e0->lie_rmt_uid_hash,
+                                     &t->lit_idmaps[RMT_UIDMAP_IDX]
+                                     [lustre_idmap_hashfunc(ruid)]);
+                       list_add_tail(&e0->lie_lcl_uid_hash,
+                                     &t->lit_idmaps[LCL_UIDMAP_IDX]
+                                     [lustre_idmap_hashfunc(luid)]);
+                       list_add_tail(&e0->lie_rmt_gid_hash,
+                                     &t->lit_idmaps[RMT_GIDMAP_IDX]
+                                     [lustre_idmap_hashfunc(rgid)]);
+                       list_add_tail(&e0->lie_lcl_gid_hash,
+                                     &t->lit_idmaps[LCL_GIDMAP_IDX]
+                                     [lustre_idmap_hashfunc(lgid)]);
+               }
                spin_unlock(&t->lit_lock);
-                if (e1 != NULL) {
-                        idmap_entry_free(e0);
-                        if (IS_ERR(e1))
-                                return PTR_ERR(e1);
-                }
-        } else if (IS_ERR(e0)) {
-                return PTR_ERR(e0);
-        }
+               if (e1 != NULL) {
+                       idmap_entry_free(e0);
+                       if (IS_ERR(e1))
+                               return PTR_ERR(e1);
+               }
+       } else if (IS_ERR(e0)) {
+               return PTR_ERR(e0);
+       }
 
-        return 0;
+       return 0;
 }
 EXPORT_SYMBOL(lustre_idmap_add);
 
@@ -372,7 +374,7 @@ int lustre_idmap_lookup_uid(struct lu_ucred *mu,
                            struct lustre_idmap_table *t,
                            int reverse, uid_t uid)
 {
-       cfs_list_t *hash;
+       struct list_head *hash;
 
        if (mu && (mu->uc_valid == UCRED_OLD || mu->uc_valid == UCRED_NEW)) {
                if (!reverse) {
@@ -404,7 +406,7 @@ EXPORT_SYMBOL(lustre_idmap_lookup_uid);
 int lustre_idmap_lookup_gid(struct lu_ucred *mu, struct lustre_idmap_table *t,
                            int reverse, gid_t gid)
 {
-       cfs_list_t *hash;
+       struct list_head *hash;
 
        if (mu && (mu->uc_valid == UCRED_OLD || mu->uc_valid == UCRED_NEW)) {
                if (!reverse) {
@@ -445,7 +447,7 @@ struct lustre_idmap_table *lustre_idmap_init(void)
        spin_lock_init(&t->lit_lock);
        for (i = 0; i < ARRAY_SIZE(t->lit_idmaps); i++)
                for (j = 0; j < ARRAY_SIZE(t->lit_idmaps[i]); j++)
-                       CFS_INIT_LIST_HEAD(&t->lit_idmaps[i][j]);
+                       INIT_LIST_HEAD(&t->lit_idmaps[i][j]);
 
        return t;
 }
@@ -453,7 +455,7 @@ EXPORT_SYMBOL(lustre_idmap_init);
 
 void lustre_idmap_fini(struct lustre_idmap_table *t)
 {
-        cfs_list_t *list;
+       struct list_head *list;
         struct lustre_idmap_entry *e;
         int i;
         LASSERT(t);
@@ -461,10 +463,10 @@ void lustre_idmap_fini(struct lustre_idmap_table *t)
         list = t->lit_idmaps[RMT_UIDMAP_IDX];
        spin_lock(&t->lit_lock);
        for (i = 0; i < CFS_IDMAP_HASHSIZE; i++)
-               while (!cfs_list_empty(&list[i])) {
-                       e = cfs_list_entry(list[i].next,
-                                          struct lustre_idmap_entry,
-                                          lie_rmt_uid_hash);
+               while (!list_empty(&list[i])) {
+                       e = list_entry(list[i].next,
+                                      struct lustre_idmap_entry,
+                                      lie_rmt_uid_hash);
                        idmap_entry_free(e);
                }
        spin_unlock(&t->lit_lock);