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-rw-r--r--fs/afs/dir.c4
-rw-r--r--fs/afs/file.c8
-rw-r--r--fs/afs/flock.c60
-rw-r--r--fs/afs/internal.h6
-rw-r--r--fs/afs/main.c3
-rw-r--r--fs/afs/server.c14
-rw-r--r--fs/afs/volume.c4
7 files changed, 49 insertions, 50 deletions
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index b5b8de521f99..8a67fc427e74 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -479,8 +479,10 @@ static int afs_dir_iterate_block(struct afs_vnode *dvnode,
dire->u.name[0] == '.' &&
ctx->actor != afs_lookup_filldir &&
ctx->actor != afs_lookup_one_filldir &&
- memcmp(dire->u.name, ".__afs", 6) == 0)
+ memcmp(dire->u.name, ".__afs", 6) == 0) {
+ ctx->pos = blkoff + next * sizeof(union afs_xdr_dirent);
continue;
+ }
/* found the next entry */
if (!dir_emit(ctx, dire->u.name, nlen,
diff --git a/fs/afs/file.c b/fs/afs/file.c
index 3d33b221d9ca..ef2cc8f565d2 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -417,13 +417,17 @@ static void afs_add_open_mmap(struct afs_vnode *vnode)
static void afs_drop_open_mmap(struct afs_vnode *vnode)
{
- if (!atomic_dec_and_test(&vnode->cb_nr_mmap))
+ if (atomic_add_unless(&vnode->cb_nr_mmap, -1, 1))
return;
down_write(&vnode->volume->open_mmaps_lock);
- if (atomic_read(&vnode->cb_nr_mmap) == 0)
+ read_seqlock_excl(&vnode->cb_lock);
+ // the only place where ->cb_nr_mmap may hit 0
+ // see __afs_break_callback() for the other side...
+ if (atomic_dec_and_test(&vnode->cb_nr_mmap))
list_del_init(&vnode->cb_mmap_link);
+ read_sequnlock_excl(&vnode->cb_lock);
up_write(&vnode->volume->open_mmaps_lock);
flush_work(&vnode->cb_work);
diff --git a/fs/afs/flock.c b/fs/afs/flock.c
index 9c6dea3139f5..f0e96a35093f 100644
--- a/fs/afs/flock.c
+++ b/fs/afs/flock.c
@@ -93,13 +93,13 @@ static void afs_grant_locks(struct afs_vnode *vnode)
bool exclusive = (vnode->lock_type == AFS_LOCK_WRITE);
list_for_each_entry_safe(p, _p, &vnode->pending_locks, fl_u.afs.link) {
- if (!exclusive && p->fl_type == F_WRLCK)
+ if (!exclusive && lock_is_write(p))
continue;
list_move_tail(&p->fl_u.afs.link, &vnode->granted_locks);
p->fl_u.afs.state = AFS_LOCK_GRANTED;
trace_afs_flock_op(vnode, p, afs_flock_op_grant);
- wake_up(&p->fl_wait);
+ locks_wake_up(p);
}
}
@@ -112,25 +112,24 @@ static void afs_next_locker(struct afs_vnode *vnode, int error)
{
struct file_lock *p, *_p, *next = NULL;
struct key *key = vnode->lock_key;
- unsigned int fl_type = F_RDLCK;
+ unsigned int type = F_RDLCK;
_enter("");
if (vnode->lock_type == AFS_LOCK_WRITE)
- fl_type = F_WRLCK;
+ type = F_WRLCK;
list_for_each_entry_safe(p, _p, &vnode->pending_locks, fl_u.afs.link) {
if (error &&
- p->fl_type == fl_type &&
- afs_file_key(p->fl_file) == key) {
+ p->c.flc_type == type &&
+ afs_file_key(p->c.flc_file) == key) {
list_del_init(&p->fl_u.afs.link);
p->fl_u.afs.state = error;
- wake_up(&p->fl_wait);
+ locks_wake_up(p);
}
/* Select the next locker to hand off to. */
- if (next &&
- (next->fl_type == F_WRLCK || p->fl_type == F_RDLCK))
+ if (next && (lock_is_write(next) || lock_is_read(p)))
continue;
next = p;
}
@@ -142,7 +141,7 @@ static void afs_next_locker(struct afs_vnode *vnode, int error)
afs_set_lock_state(vnode, AFS_VNODE_LOCK_SETTING);
next->fl_u.afs.state = AFS_LOCK_YOUR_TRY;
trace_afs_flock_op(vnode, next, afs_flock_op_wake);
- wake_up(&next->fl_wait);
+ locks_wake_up(next);
} else {
afs_set_lock_state(vnode, AFS_VNODE_LOCK_NONE);
trace_afs_flock_ev(vnode, NULL, afs_flock_no_lockers, 0);
@@ -166,7 +165,7 @@ static void afs_kill_lockers_enoent(struct afs_vnode *vnode)
struct file_lock, fl_u.afs.link);
list_del_init(&p->fl_u.afs.link);
p->fl_u.afs.state = -ENOENT;
- wake_up(&p->fl_wait);
+ locks_wake_up(p);
}
key_put(vnode->lock_key);
@@ -464,14 +463,14 @@ static int afs_do_setlk(struct file *file, struct file_lock *fl)
_enter("{%llx:%llu},%llu-%llu,%u,%u",
vnode->fid.vid, vnode->fid.vnode,
- fl->fl_start, fl->fl_end, fl->fl_type, mode);
+ fl->fl_start, fl->fl_end, fl->c.flc_type, mode);
fl->fl_ops = &afs_lock_ops;
INIT_LIST_HEAD(&fl->fl_u.afs.link);
fl->fl_u.afs.state = AFS_LOCK_PENDING;
partial = (fl->fl_start != 0 || fl->fl_end != OFFSET_MAX);
- type = (fl->fl_type == F_RDLCK) ? AFS_LOCK_READ : AFS_LOCK_WRITE;
+ type = lock_is_read(fl) ? AFS_LOCK_READ : AFS_LOCK_WRITE;
if (mode == afs_flock_mode_write && partial)
type = AFS_LOCK_WRITE;
@@ -524,7 +523,7 @@ static int afs_do_setlk(struct file *file, struct file_lock *fl)
}
if (vnode->lock_state == AFS_VNODE_LOCK_NONE &&
- !(fl->fl_flags & FL_SLEEP)) {
+ !(fl->c.flc_flags & FL_SLEEP)) {
ret = -EAGAIN;
if (type == AFS_LOCK_READ) {
if (vnode->status.lock_count == -1)
@@ -621,7 +620,7 @@ skip_server_lock:
return 0;
lock_is_contended:
- if (!(fl->fl_flags & FL_SLEEP)) {
+ if (!(fl->c.flc_flags & FL_SLEEP)) {
list_del_init(&fl->fl_u.afs.link);
afs_next_locker(vnode, 0);
ret = -EAGAIN;
@@ -641,7 +640,7 @@ need_to_wait:
spin_unlock(&vnode->lock);
trace_afs_flock_ev(vnode, fl, afs_flock_waiting, 0);
- ret = wait_event_interruptible(fl->fl_wait,
+ ret = wait_event_interruptible(fl->c.flc_wait,
fl->fl_u.afs.state != AFS_LOCK_PENDING);
trace_afs_flock_ev(vnode, fl, afs_flock_waited, ret);
@@ -704,7 +703,8 @@ static int afs_do_unlk(struct file *file, struct file_lock *fl)
struct afs_vnode *vnode = AFS_FS_I(file_inode(file));
int ret;
- _enter("{%llx:%llu},%u", vnode->fid.vid, vnode->fid.vnode, fl->fl_type);
+ _enter("{%llx:%llu},%u", vnode->fid.vid, vnode->fid.vnode,
+ fl->c.flc_type);
trace_afs_flock_op(vnode, fl, afs_flock_op_unlock);
@@ -730,11 +730,11 @@ static int afs_do_getlk(struct file *file, struct file_lock *fl)
if (vnode->lock_state == AFS_VNODE_LOCK_DELETED)
return -ENOENT;
- fl->fl_type = F_UNLCK;
+ fl->c.flc_type = F_UNLCK;
/* check local lock records first */
posix_test_lock(file, fl);
- if (fl->fl_type == F_UNLCK) {
+ if (lock_is_unlock(fl)) {
/* no local locks; consult the server */
ret = afs_fetch_status(vnode, key, false, NULL);
if (ret < 0)
@@ -743,18 +743,18 @@ static int afs_do_getlk(struct file *file, struct file_lock *fl)
lock_count = READ_ONCE(vnode->status.lock_count);
if (lock_count != 0) {
if (lock_count > 0)
- fl->fl_type = F_RDLCK;
+ fl->c.flc_type = F_RDLCK;
else
- fl->fl_type = F_WRLCK;
+ fl->c.flc_type = F_WRLCK;
fl->fl_start = 0;
fl->fl_end = OFFSET_MAX;
- fl->fl_pid = 0;
+ fl->c.flc_pid = 0;
}
}
ret = 0;
error:
- _leave(" = %d [%hd]", ret, fl->fl_type);
+ _leave(" = %d [%hd]", ret, fl->c.flc_type);
return ret;
}
@@ -769,7 +769,7 @@ int afs_lock(struct file *file, int cmd, struct file_lock *fl)
_enter("{%llx:%llu},%d,{t=%x,fl=%x,r=%Ld:%Ld}",
vnode->fid.vid, vnode->fid.vnode, cmd,
- fl->fl_type, fl->fl_flags,
+ fl->c.flc_type, fl->c.flc_flags,
(long long) fl->fl_start, (long long) fl->fl_end);
if (IS_GETLK(cmd))
@@ -778,7 +778,7 @@ int afs_lock(struct file *file, int cmd, struct file_lock *fl)
fl->fl_u.afs.debug_id = atomic_inc_return(&afs_file_lock_debug_id);
trace_afs_flock_op(vnode, fl, afs_flock_op_lock);
- if (fl->fl_type == F_UNLCK)
+ if (lock_is_unlock(fl))
ret = afs_do_unlk(file, fl);
else
ret = afs_do_setlk(file, fl);
@@ -804,7 +804,7 @@ int afs_flock(struct file *file, int cmd, struct file_lock *fl)
_enter("{%llx:%llu},%d,{t=%x,fl=%x}",
vnode->fid.vid, vnode->fid.vnode, cmd,
- fl->fl_type, fl->fl_flags);
+ fl->c.flc_type, fl->c.flc_flags);
/*
* No BSD flocks over NFS allowed.
@@ -813,14 +813,14 @@ int afs_flock(struct file *file, int cmd, struct file_lock *fl)
* Not sure whether that would be unique, though, or whether
* that would break in other places.
*/
- if (!(fl->fl_flags & FL_FLOCK))
+ if (!(fl->c.flc_flags & FL_FLOCK))
return -ENOLCK;
fl->fl_u.afs.debug_id = atomic_inc_return(&afs_file_lock_debug_id);
trace_afs_flock_op(vnode, fl, afs_flock_op_flock);
/* we're simulating flock() locks using posix locks on the server */
- if (fl->fl_type == F_UNLCK)
+ if (lock_is_unlock(fl))
ret = afs_do_unlk(file, fl);
else
ret = afs_do_setlk(file, fl);
@@ -843,7 +843,7 @@ int afs_flock(struct file *file, int cmd, struct file_lock *fl)
*/
static void afs_fl_copy_lock(struct file_lock *new, struct file_lock *fl)
{
- struct afs_vnode *vnode = AFS_FS_I(file_inode(fl->fl_file));
+ struct afs_vnode *vnode = AFS_FS_I(file_inode(fl->c.flc_file));
_enter("");
@@ -861,7 +861,7 @@ static void afs_fl_copy_lock(struct file_lock *new, struct file_lock *fl)
*/
static void afs_fl_release_private(struct file_lock *fl)
{
- struct afs_vnode *vnode = AFS_FS_I(file_inode(fl->fl_file));
+ struct afs_vnode *vnode = AFS_FS_I(file_inode(fl->c.flc_file));
_enter("");
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 9c03fcf7ffaa..6ce5a612937c 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -321,8 +321,7 @@ struct afs_net {
struct list_head fs_probe_slow; /* List of afs_server to probe at 5m intervals */
struct hlist_head fs_proc; /* procfs servers list */
- struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */
- struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */
+ struct hlist_head fs_addresses; /* afs_server (by lowest IPv6 addr) */
seqlock_t fs_addr_lock; /* For fs_addresses[46] */
struct work_struct fs_manager;
@@ -561,8 +560,7 @@ struct afs_server {
struct afs_server __rcu *uuid_next; /* Next server with same UUID */
struct afs_server *uuid_prev; /* Previous server with same UUID */
struct list_head probe_link; /* Link in net->fs_probe_list */
- struct hlist_node addr4_link; /* Link in net->fs_addresses4 */
- struct hlist_node addr6_link; /* Link in net->fs_addresses6 */
+ struct hlist_node addr_link; /* Link in net->fs_addresses6 */
struct hlist_node proc_link; /* Link in net->fs_proc */
struct list_head volumes; /* RCU list of afs_server_entry objects */
struct afs_server *gc_next; /* Next server in manager's list */
diff --git a/fs/afs/main.c b/fs/afs/main.c
index 1b3bd21c168a..a14f6013e316 100644
--- a/fs/afs/main.c
+++ b/fs/afs/main.c
@@ -90,8 +90,7 @@ static int __net_init afs_net_init(struct net *net_ns)
INIT_LIST_HEAD(&net->fs_probe_slow);
INIT_HLIST_HEAD(&net->fs_proc);
- INIT_HLIST_HEAD(&net->fs_addresses4);
- INIT_HLIST_HEAD(&net->fs_addresses6);
+ INIT_HLIST_HEAD(&net->fs_addresses);
seqlock_init(&net->fs_addr_lock);
INIT_WORK(&net->fs_manager, afs_manage_servers);
diff --git a/fs/afs/server.c b/fs/afs/server.c
index e169121f603e..038f9d0ae3af 100644
--- a/fs/afs/server.c
+++ b/fs/afs/server.c
@@ -38,7 +38,7 @@ struct afs_server *afs_find_server(struct afs_net *net, const struct rxrpc_peer
seq++; /* 2 on the 1st/lockless path, otherwise odd */
read_seqbegin_or_lock(&net->fs_addr_lock, &seq);
- hlist_for_each_entry_rcu(server, &net->fs_addresses6, addr6_link) {
+ hlist_for_each_entry_rcu(server, &net->fs_addresses, addr_link) {
estate = rcu_dereference(server->endpoint_state);
alist = estate->addresses;
for (i = 0; i < alist->nr_addrs; i++)
@@ -177,10 +177,8 @@ added_dup:
* bit, but anything we might want to do gets messy and memory
* intensive.
*/
- if (alist->nr_ipv4 > 0)
- hlist_add_head_rcu(&server->addr4_link, &net->fs_addresses4);
- if (alist->nr_addrs > alist->nr_ipv4)
- hlist_add_head_rcu(&server->addr6_link, &net->fs_addresses6);
+ if (alist->nr_addrs > 0)
+ hlist_add_head_rcu(&server->addr_link, &net->fs_addresses);
write_sequnlock(&net->fs_addr_lock);
@@ -511,10 +509,8 @@ static void afs_gc_servers(struct afs_net *net, struct afs_server *gc_list)
list_del(&server->probe_link);
hlist_del_rcu(&server->proc_link);
- if (!hlist_unhashed(&server->addr4_link))
- hlist_del_rcu(&server->addr4_link);
- if (!hlist_unhashed(&server->addr6_link))
- hlist_del_rcu(&server->addr6_link);
+ if (!hlist_unhashed(&server->addr_link))
+ hlist_del_rcu(&server->addr_link);
}
write_sequnlock(&net->fs_lock);
diff --git a/fs/afs/volume.c b/fs/afs/volume.c
index 020ecd45e476..af3a3f57c1b3 100644
--- a/fs/afs/volume.c
+++ b/fs/afs/volume.c
@@ -353,7 +353,7 @@ static int afs_update_volume_status(struct afs_volume *volume, struct key *key)
{
struct afs_server_list *new, *old, *discard;
struct afs_vldb_entry *vldb;
- char idbuf[16];
+ char idbuf[24];
int ret, idsz;
_enter("");
@@ -361,7 +361,7 @@ static int afs_update_volume_status(struct afs_volume *volume, struct key *key)
/* We look up an ID by passing it as a decimal string in the
* operation's name parameter.
*/
- idsz = sprintf(idbuf, "%llu", volume->vid);
+ idsz = snprintf(idbuf, sizeof(idbuf), "%llu", volume->vid);
vldb = afs_vl_lookup_vldb(volume->cell, key, idbuf, idsz);
if (IS_ERR(vldb)) {
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