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-rw-r--r--fs/afs/dir.c45
-rw-r--r--fs/afs/dynroot.c25
-rw-r--r--fs/afs/internal.h3
-rw-r--r--fs/afs/rxrpc.c30
-rw-r--r--fs/afs/write.c2
5 files changed, 33 insertions, 72 deletions
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 7d623008157f..855bf2b79fed 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -822,6 +822,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
{
struct afs_vnode *dvnode = AFS_FS_I(dir);
struct inode *inode;
+ struct dentry *d;
struct key *key;
int ret;
@@ -862,43 +863,17 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
afs_stat_v(dvnode, n_lookup);
inode = afs_do_lookup(dir, dentry, key);
- if (IS_ERR(inode)) {
- ret = PTR_ERR(inode);
- if (ret == -ENOENT) {
- inode = afs_try_auto_mntpt(dentry, dir);
- if (!IS_ERR(inode)) {
- key_put(key);
- goto success;
- }
-
- ret = PTR_ERR(inode);
- }
-
- key_put(key);
- if (ret == -ENOENT) {
- d_add(dentry, NULL);
- _leave(" = NULL [negative]");
- return NULL;
- }
- _leave(" = %d [do]", ret);
- return ERR_PTR(ret);
- }
- dentry->d_fsdata = (void *)(unsigned long)dvnode->status.data_version;
-
- /* instantiate the dentry */
key_put(key);
- if (IS_ERR(inode)) {
- _leave(" = %ld", PTR_ERR(inode));
- return ERR_CAST(inode);
+ if (inode == ERR_PTR(-ENOENT)) {
+ inode = afs_try_auto_mntpt(dentry, dir);
+ } else {
+ dentry->d_fsdata =
+ (void *)(unsigned long)dvnode->status.data_version;
}
-
-success:
- d_add(dentry, inode);
- _leave(" = 0 { ino=%lu v=%u }",
- d_inode(dentry)->i_ino,
- d_inode(dentry)->i_generation);
-
- return NULL;
+ d = d_splice_alias(inode, dentry);
+ if (!IS_ERR_OR_NULL(d))
+ d->d_fsdata = dentry->d_fsdata;
+ return d;
}
/*
diff --git a/fs/afs/dynroot.c b/fs/afs/dynroot.c
index 174e843f0633..1cde710a8013 100644
--- a/fs/afs/dynroot.c
+++ b/fs/afs/dynroot.c
@@ -83,7 +83,7 @@ struct inode *afs_try_auto_mntpt(struct dentry *dentry, struct inode *dir)
out:
_leave("= %d", ret);
- return ERR_PTR(ret);
+ return ret == -ENOENT ? NULL : ERR_PTR(ret);
}
/*
@@ -141,12 +141,6 @@ out_p:
static struct dentry *afs_dynroot_lookup(struct inode *dir, struct dentry *dentry,
unsigned int flags)
{
- struct afs_vnode *vnode;
- struct inode *inode;
- int ret;
-
- vnode = AFS_FS_I(dir);
-
_enter("%pd", dentry);
ASSERTCMP(d_inode(dentry), ==, NULL);
@@ -160,22 +154,7 @@ static struct dentry *afs_dynroot_lookup(struct inode *dir, struct dentry *dentr
memcmp(dentry->d_name.name, "@cell", 5) == 0)
return afs_lookup_atcell(dentry);
- inode = afs_try_auto_mntpt(dentry, dir);
- if (IS_ERR(inode)) {
- ret = PTR_ERR(inode);
- if (ret == -ENOENT) {
- d_add(dentry, NULL);
- _leave(" = NULL [negative]");
- return NULL;
- }
- _leave(" = %d [do]", ret);
- return ERR_PTR(ret);
- }
-
- d_add(dentry, inode);
- _leave(" = 0 { ino=%lu v=%u }",
- d_inode(dentry)->i_ino, d_inode(dentry)->i_generation);
- return NULL;
+ return d_splice_alias(afs_try_auto_mntpt(dentry, dir), dentry);
}
const struct inode_operations afs_dynroot_inode_operations = {
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 9778df135717..871a228d7f37 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -21,6 +21,7 @@
#include <linux/fscache.h>
#include <linux/backing-dev.h>
#include <linux/uuid.h>
+#include <linux/mm_types.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#include <net/sock.h>
@@ -1076,7 +1077,7 @@ extern int afs_writepages(struct address_space *, struct writeback_control *);
extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *);
extern int afs_fsync(struct file *, loff_t, loff_t, int);
-extern int afs_page_mkwrite(struct vm_fault *);
+extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf);
extern void afs_prune_wb_keys(struct afs_vnode *);
extern int afs_launder_page(struct page *);
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index a1b18082991b..35f2ae30f31f 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -346,7 +346,6 @@ long afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call,
struct rxrpc_call *rxcall;
struct msghdr msg;
struct kvec iov[1];
- size_t offset;
s64 tx_total_len;
int ret;
@@ -433,10 +432,10 @@ error_do_abort:
rxrpc_kernel_abort_call(call->net->socket, rxcall,
RX_USER_ABORT, ret, "KSD");
} else {
- offset = 0;
- rxrpc_kernel_recv_data(call->net->socket, rxcall, NULL,
- 0, &offset, false, &call->abort_code,
- &call->service_id);
+ iov_iter_kvec(&msg.msg_iter, READ | ITER_KVEC, NULL, 0, 0);
+ rxrpc_kernel_recv_data(call->net->socket, rxcall,
+ &msg.msg_iter, false,
+ &call->abort_code, &call->service_id);
ac->abort_code = call->abort_code;
ac->responded = true;
}
@@ -467,13 +466,14 @@ static void afs_deliver_to_call(struct afs_call *call)
state == AFS_CALL_SV_AWAIT_ACK
) {
if (state == AFS_CALL_SV_AWAIT_ACK) {
- size_t offset = 0;
+ struct iov_iter iter;
+
+ iov_iter_kvec(&iter, READ | ITER_KVEC, NULL, 0, 0);
ret = rxrpc_kernel_recv_data(call->net->socket,
- call->rxcall,
- NULL, 0, &offset, false,
+ call->rxcall, &iter, false,
&remote_abort,
&call->service_id);
- trace_afs_recv_data(call, 0, offset, false, ret);
+ trace_afs_recv_data(call, 0, 0, false, ret);
if (ret == -EINPROGRESS || ret == -EAGAIN)
return;
@@ -648,7 +648,7 @@ static void afs_wake_up_async_call(struct sock *sk, struct rxrpc_call *rxcall,
trace_afs_notify_call(rxcall, call);
call->need_attention = true;
- u = __atomic_add_unless(&call->usage, 1, 0);
+ u = atomic_fetch_add_unless(&call->usage, 1, 0);
if (u != 0) {
trace_afs_call(call, afs_call_trace_wake, u,
atomic_read(&call->net->nr_outstanding_calls),
@@ -894,6 +894,8 @@ int afs_extract_data(struct afs_call *call, void *buf, size_t count,
bool want_more)
{
struct afs_net *net = call->net;
+ struct iov_iter iter;
+ struct kvec iov;
enum afs_call_state state;
u32 remote_abort = 0;
int ret;
@@ -903,10 +905,14 @@ int afs_extract_data(struct afs_call *call, void *buf, size_t count,
ASSERTCMP(call->offset, <=, count);
- ret = rxrpc_kernel_recv_data(net->socket, call->rxcall,
- buf, count, &call->offset,
+ iov.iov_base = buf + call->offset;
+ iov.iov_len = count - call->offset;
+ iov_iter_kvec(&iter, ITER_KVEC | READ, &iov, 1, count - call->offset);
+
+ ret = rxrpc_kernel_recv_data(net->socket, call->rxcall, &iter,
want_more, &remote_abort,
&call->service_id);
+ call->offset += (count - call->offset) - iov_iter_count(&iter);
trace_afs_recv_data(call, count, call->offset, want_more, ret);
if (ret == 0 || ret == -EAGAIN)
return ret;
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 8b39e6ebb40b..19c04caf3c01 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -753,7 +753,7 @@ int afs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
* notification that a previously read-only page is about to become writable
* - if it returns an error, the caller will deliver a bus error signal
*/
-int afs_page_mkwrite(struct vm_fault *vmf)
+vm_fault_t afs_page_mkwrite(struct vm_fault *vmf)
{
struct file *file = vmf->vma->vm_file;
struct inode *inode = file_inode(file);
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