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authorAlex Elder <aelder@sgi.com>2010-08-02 10:24:57 -0500
committerAlex Elder <aelder@sgi.com>2010-08-02 10:24:57 -0500
commit6b0a2996a0c023d84bc27ec7528a6e54cb5ea264 (patch)
tree9fa9a85d5d871b3cb3c28daf57d8ef8f05becd66 /fs
parent209fb87a259ead17e966627b7f053d16a96898da (diff)
parent9fe6206f400646a2322096b56c59891d530e8d51 (diff)
downloadkernel-6b0a2996a0c023d84bc27ec7528a6e54cb5ea264.tar.gz
Merge branch 'v2.6.35'
Diffstat (limited to 'fs')
-rw-r--r--fs/9p/vfs_dir.c2
-rw-r--r--fs/ceph/Kconfig2
-rw-r--r--fs/ceph/caps.c15
-rw-r--r--fs/ceph/dir.c13
-rw-r--r--fs/ceph/file.c2
-rw-r--r--fs/ceph/inode.c6
-rw-r--r--fs/ceph/mds_client.c10
-rw-r--r--fs/ceph/mon_client.c6
-rw-r--r--fs/ceph/osd_client.c6
-rw-r--r--fs/ceph/osdmap.c26
-rw-r--r--fs/cifs/dns_resolve.c2
-rw-r--r--fs/cifs/dns_resolve.h2
-rw-r--r--fs/ecryptfs/messaging.c17
-rw-r--r--fs/gfs2/dir.c31
-rw-r--r--fs/nfs/file.c13
-rw-r--r--fs/nfs/nfsroot.c2
-rw-r--r--fs/nfs/write.c30
-rw-r--r--fs/proc/array.c2
-rw-r--r--fs/sysfs/symlink.c26
19 files changed, 138 insertions, 75 deletions
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index d61e3b28ce37..36d961f342af 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -146,7 +146,7 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
while (rdir->head < rdir->tail) {
p9stat_init(&st);
err = p9stat_read(rdir->buf + rdir->head,
- buflen - rdir->head, &st,
+ rdir->tail - rdir->head, &st,
fid->clnt->proto_version);
if (err) {
P9_DPRINTK(P9_DEBUG_VFS, "returned %d\n", err);
diff --git a/fs/ceph/Kconfig b/fs/ceph/Kconfig
index 04b8280582a9..bc87b9c1d27e 100644
--- a/fs/ceph/Kconfig
+++ b/fs/ceph/Kconfig
@@ -2,7 +2,7 @@ config CEPH_FS
tristate "Ceph distributed file system (EXPERIMENTAL)"
depends on INET && EXPERIMENTAL
select LIBCRC32C
- select CONFIG_CRYPTO_AES
+ select CRYPTO_AES
help
Choose Y or M here to include support for mounting the
experimental Ceph distributed file system. Ceph is an extremely
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 74144d6389f0..b81be9a56487 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -627,7 +627,7 @@ retry:
if (fmode >= 0)
__ceph_get_fmode(ci, fmode);
spin_unlock(&inode->i_lock);
- wake_up(&ci->i_cap_wq);
+ wake_up_all(&ci->i_cap_wq);
return 0;
}
@@ -1181,7 +1181,7 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
}
if (wake)
- wake_up(&ci->i_cap_wq);
+ wake_up_all(&ci->i_cap_wq);
return delayed;
}
@@ -2153,7 +2153,7 @@ void ceph_put_cap_refs(struct ceph_inode_info *ci, int had)
else if (flushsnaps)
ceph_flush_snaps(ci);
if (wake)
- wake_up(&ci->i_cap_wq);
+ wake_up_all(&ci->i_cap_wq);
if (put)
iput(inode);
}
@@ -2229,7 +2229,7 @@ void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr,
iput(inode);
} else if (complete_capsnap) {
ceph_flush_snaps(ci);
- wake_up(&ci->i_cap_wq);
+ wake_up_all(&ci->i_cap_wq);
}
if (drop_capsnap)
iput(inode);
@@ -2405,7 +2405,7 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
if (queue_invalidate)
ceph_queue_invalidate(inode);
if (wake)
- wake_up(&ci->i_cap_wq);
+ wake_up_all(&ci->i_cap_wq);
if (check_caps == 1)
ceph_check_caps(ci, CHECK_CAPS_NODELAY|CHECK_CAPS_AUTHONLY,
@@ -2460,7 +2460,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid,
struct ceph_inode_info,
i_flushing_item)->vfs_inode);
mdsc->num_cap_flushing--;
- wake_up(&mdsc->cap_flushing_wq);
+ wake_up_all(&mdsc->cap_flushing_wq);
dout(" inode %p now !flushing\n", inode);
if (ci->i_dirty_caps == 0) {
@@ -2472,7 +2472,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid,
}
}
spin_unlock(&mdsc->cap_dirty_lock);
- wake_up(&ci->i_cap_wq);
+ wake_up_all(&ci->i_cap_wq);
out:
spin_unlock(&inode->i_lock);
@@ -2984,6 +2984,7 @@ int ceph_encode_dentry_release(void **p, struct dentry *dentry,
memcpy(*p, dentry->d_name.name, dentry->d_name.len);
*p += dentry->d_name.len;
rel->dname_seq = cpu_to_le32(di->lease_seq);
+ __ceph_mdsc_drop_dentry_lease(dentry);
}
spin_unlock(&dentry->d_lock);
return ret;
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index f85719310db2..f94ed3c7f6a5 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -266,6 +266,7 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
spin_lock(&inode->i_lock);
if ((filp->f_pos == 2 || fi->dentry) &&
!ceph_test_opt(client, NOASYNCREADDIR) &&
+ ceph_snap(inode) != CEPH_SNAPDIR &&
(ci->i_ceph_flags & CEPH_I_COMPLETE) &&
__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) {
err = __dcache_readdir(filp, dirent, filldir);
@@ -1013,18 +1014,22 @@ out_touch:
/*
* When a dentry is released, clear the dir I_COMPLETE if it was part
- * of the current dir gen.
+ * of the current dir gen or if this is in the snapshot namespace.
*/
static void ceph_dentry_release(struct dentry *dentry)
{
struct ceph_dentry_info *di = ceph_dentry(dentry);
struct inode *parent_inode = dentry->d_parent->d_inode;
+ u64 snapid = ceph_snap(parent_inode);
- if (parent_inode) {
+ dout("dentry_release %p parent %p\n", dentry, parent_inode);
+
+ if (parent_inode && snapid != CEPH_SNAPDIR) {
struct ceph_inode_info *ci = ceph_inode(parent_inode);
spin_lock(&parent_inode->i_lock);
- if (ci->i_shared_gen == di->lease_shared_gen) {
+ if (ci->i_shared_gen == di->lease_shared_gen ||
+ snapid <= CEPH_MAXSNAP) {
dout(" clearing %p complete (d_release)\n",
parent_inode);
ci->i_ceph_flags &= ~CEPH_I_COMPLETE;
@@ -1241,7 +1246,9 @@ struct dentry_operations ceph_dentry_ops = {
struct dentry_operations ceph_snapdir_dentry_ops = {
.d_revalidate = ceph_snapdir_d_revalidate,
+ .d_release = ceph_dentry_release,
};
struct dentry_operations ceph_snap_dentry_ops = {
+ .d_release = ceph_dentry_release,
};
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 6251a1574b94..7c08698fad3e 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -265,7 +265,7 @@ int ceph_release(struct inode *inode, struct file *file)
kmem_cache_free(ceph_file_cachep, cf);
/* wake up anyone waiting for caps on this inode */
- wake_up(&ci->i_cap_wq);
+ wake_up_all(&ci->i_cap_wq);
return 0;
}
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 8f9b9fe8ef9f..389f9dbd9949 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -1199,8 +1199,10 @@ retry_lookup:
goto out;
}
err = ceph_init_dentry(dn);
- if (err < 0)
+ if (err < 0) {
+ dput(dn);
goto out;
+ }
} else if (dn->d_inode &&
(ceph_ino(dn->d_inode) != vino.ino ||
ceph_snap(dn->d_inode) != vino.snap)) {
@@ -1499,7 +1501,7 @@ retry:
if (wrbuffer_refs == 0)
ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL);
if (wake)
- wake_up(&ci->i_cap_wq);
+ wake_up_all(&ci->i_cap_wq);
}
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 416c08d315db..dd440bd438a9 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -868,7 +868,7 @@ static int wake_up_session_cb(struct inode *inode, struct ceph_cap *cap,
{
struct ceph_inode_info *ci = ceph_inode(inode);
- wake_up(&ci->i_cap_wq);
+ wake_up_all(&ci->i_cap_wq);
if (arg) {
spin_lock(&inode->i_lock);
ci->i_wanted_max_size = 0;
@@ -1564,7 +1564,7 @@ static void complete_request(struct ceph_mds_client *mdsc,
if (req->r_callback)
req->r_callback(mdsc, req);
else
- complete(&req->r_completion);
+ complete_all(&req->r_completion);
}
/*
@@ -1932,7 +1932,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
if (head->safe) {
req->r_got_safe = true;
__unregister_request(mdsc, req);
- complete(&req->r_safe_completion);
+ complete_all(&req->r_safe_completion);
if (req->r_got_unsafe) {
/*
@@ -1947,7 +1947,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
/* last unsafe request during umount? */
if (mdsc->stopping && !__get_oldest_req(mdsc))
- complete(&mdsc->safe_umount_waiters);
+ complete_all(&mdsc->safe_umount_waiters);
mutex_unlock(&mdsc->mutex);
goto out;
}
@@ -2126,7 +2126,7 @@ static void handle_session(struct ceph_mds_session *session,
pr_info("mds%d reconnect denied\n", session->s_mds);
remove_session_caps(session);
wake = 1; /* for good measure */
- complete(&mdsc->session_close_waiters);
+ complete_all(&mdsc->session_close_waiters);
kick_requests(mdsc, mds);
break;
diff --git a/fs/ceph/mon_client.c b/fs/ceph/mon_client.c
index cc115eafae11..54fe01c50706 100644
--- a/fs/ceph/mon_client.c
+++ b/fs/ceph/mon_client.c
@@ -345,7 +345,7 @@ static void ceph_monc_handle_map(struct ceph_mon_client *monc,
out:
mutex_unlock(&monc->mutex);
- wake_up(&client->auth_wq);
+ wake_up_all(&client->auth_wq);
}
/*
@@ -462,7 +462,7 @@ static void handle_statfs_reply(struct ceph_mon_client *monc,
}
mutex_unlock(&monc->mutex);
if (req) {
- complete(&req->completion);
+ complete_all(&req->completion);
put_generic_request(req);
}
return;
@@ -718,7 +718,7 @@ static void handle_auth_reply(struct ceph_mon_client *monc,
monc->m_auth->front_max);
if (ret < 0) {
monc->client->auth_err = ret;
- wake_up(&monc->client->auth_wq);
+ wake_up_all(&monc->client->auth_wq);
} else if (ret > 0) {
__send_prepared_auth_request(monc, ret);
} else if (!was_auth && monc->auth->ops->is_authenticated(monc->auth)) {
diff --git a/fs/ceph/osd_client.c b/fs/ceph/osd_client.c
index 92b7251a53f1..e38522347898 100644
--- a/fs/ceph/osd_client.c
+++ b/fs/ceph/osd_client.c
@@ -862,12 +862,12 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
if (req->r_callback)
req->r_callback(req, msg);
else
- complete(&req->r_completion);
+ complete_all(&req->r_completion);
if (flags & CEPH_OSD_FLAG_ONDISK) {
if (req->r_safe_callback)
req->r_safe_callback(req, msg);
- complete(&req->r_safe_completion); /* fsync waiter */
+ complete_all(&req->r_safe_completion); /* fsync waiter */
}
done:
@@ -1083,7 +1083,7 @@ done:
if (newmap)
kick_requests(osdc, NULL);
up_read(&osdc->map_sem);
- wake_up(&osdc->client->auth_wq);
+ wake_up_all(&osdc->client->auth_wq);
return;
bad:
diff --git a/fs/ceph/osdmap.c b/fs/ceph/osdmap.c
index 277f8b339577..416d46adbf87 100644
--- a/fs/ceph/osdmap.c
+++ b/fs/ceph/osdmap.c
@@ -831,12 +831,13 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
/* remove any? */
while (rbp && pgid_cmp(rb_entry(rbp, struct ceph_pg_mapping,
node)->pgid, pgid) <= 0) {
- struct rb_node *cur = rbp;
+ struct ceph_pg_mapping *cur =
+ rb_entry(rbp, struct ceph_pg_mapping, node);
+
rbp = rb_next(rbp);
- dout(" removed pg_temp %llx\n",
- *(u64 *)&rb_entry(cur, struct ceph_pg_mapping,
- node)->pgid);
- rb_erase(cur, &map->pg_temp);
+ dout(" removed pg_temp %llx\n", *(u64 *)&cur->pgid);
+ rb_erase(&cur->node, &map->pg_temp);
+ kfree(cur);
}
if (pglen) {
@@ -852,19 +853,22 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
for (j = 0; j < pglen; j++)
pg->osds[j] = ceph_decode_32(p);
err = __insert_pg_mapping(pg, &map->pg_temp);
- if (err)
+ if (err) {
+ kfree(pg);
goto bad;
+ }
dout(" added pg_temp %llx len %d\n", *(u64 *)&pgid,
pglen);
}
}
while (rbp) {
- struct rb_node *cur = rbp;
+ struct ceph_pg_mapping *cur =
+ rb_entry(rbp, struct ceph_pg_mapping, node);
+
rbp = rb_next(rbp);
- dout(" removed pg_temp %llx\n",
- *(u64 *)&rb_entry(cur, struct ceph_pg_mapping,
- node)->pgid);
- rb_erase(cur, &map->pg_temp);
+ dout(" removed pg_temp %llx\n", *(u64 *)&cur->pgid);
+ rb_erase(&cur->node, &map->pg_temp);
+ kfree(cur);
}
/* ignore the rest */
diff --git a/fs/cifs/dns_resolve.c b/fs/cifs/dns_resolve.c
index 49315cbf742d..853a968e82d7 100644
--- a/fs/cifs/dns_resolve.c
+++ b/fs/cifs/dns_resolve.c
@@ -227,7 +227,7 @@ failed_put_cred:
return ret;
}
-void __exit cifs_exit_dns_resolver(void)
+void cifs_exit_dns_resolver(void)
{
key_revoke(dns_resolver_cache->thread_keyring);
unregister_key_type(&key_type_dns_resolver);
diff --git a/fs/cifs/dns_resolve.h b/fs/cifs/dns_resolve.h
index 26b9eaa9f5ee..5d7f291df162 100644
--- a/fs/cifs/dns_resolve.h
+++ b/fs/cifs/dns_resolve.h
@@ -25,7 +25,7 @@
#ifdef __KERNEL__
extern int __init cifs_init_dns_resolver(void);
-extern void __exit cifs_exit_dns_resolver(void);
+extern void cifs_exit_dns_resolver(void);
extern int dns_resolve_server_name_to_ip(const char *unc, char **ip_addr);
#endif /* KERNEL */
diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c
index 2d8dbce9d485..46c4dd8dfcc3 100644
--- a/fs/ecryptfs/messaging.c
+++ b/fs/ecryptfs/messaging.c
@@ -31,9 +31,9 @@ static struct mutex ecryptfs_msg_ctx_lists_mux;
static struct hlist_head *ecryptfs_daemon_hash;
struct mutex ecryptfs_daemon_hash_mux;
-static int ecryptfs_hash_buckets;
+static int ecryptfs_hash_bits;
#define ecryptfs_uid_hash(uid) \
- hash_long((unsigned long)uid, ecryptfs_hash_buckets)
+ hash_long((unsigned long)uid, ecryptfs_hash_bits)
static u32 ecryptfs_msg_counter;
static struct ecryptfs_msg_ctx *ecryptfs_msg_ctx_arr;
@@ -486,18 +486,19 @@ int ecryptfs_init_messaging(void)
}
mutex_init(&ecryptfs_daemon_hash_mux);
mutex_lock(&ecryptfs_daemon_hash_mux);
- ecryptfs_hash_buckets = 1;
- while (ecryptfs_number_of_users >> ecryptfs_hash_buckets)
- ecryptfs_hash_buckets++;
+ ecryptfs_hash_bits = 1;
+ while (ecryptfs_number_of_users >> ecryptfs_hash_bits)
+ ecryptfs_hash_bits++;
ecryptfs_daemon_hash = kmalloc((sizeof(struct hlist_head)
- * ecryptfs_hash_buckets), GFP_KERNEL);
+ * (1 << ecryptfs_hash_bits)),
+ GFP_KERNEL);
if (!ecryptfs_daemon_hash) {
rc = -ENOMEM;
printk(KERN_ERR "%s: Failed to allocate memory\n", __func__);
mutex_unlock(&ecryptfs_daemon_hash_mux);
goto out;
}
- for (i = 0; i < ecryptfs_hash_buckets; i++)
+ for (i = 0; i < (1 << ecryptfs_hash_bits); i++)
INIT_HLIST_HEAD(&ecryptfs_daemon_hash[i]);
mutex_unlock(&ecryptfs_daemon_hash_mux);
ecryptfs_msg_ctx_arr = kmalloc((sizeof(struct ecryptfs_msg_ctx)
@@ -554,7 +555,7 @@ void ecryptfs_release_messaging(void)
int i;
mutex_lock(&ecryptfs_daemon_hash_mux);
- for (i = 0; i < ecryptfs_hash_buckets; i++) {
+ for (i = 0; i < (1 << ecryptfs_hash_bits); i++) {
int rc;
hlist_for_each_entry(daemon, elem,
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index 26ca3361a8bc..6b48d7c268b2 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -1231,6 +1231,25 @@ static int do_filldir_main(struct gfs2_inode *dip, u64 *offset,
return 0;
}
+static void *gfs2_alloc_sort_buffer(unsigned size)
+{
+ void *ptr = NULL;
+
+ if (size < KMALLOC_MAX_SIZE)
+ ptr = kmalloc(size, GFP_NOFS | __GFP_NOWARN);
+ if (!ptr)
+ ptr = __vmalloc(size, GFP_NOFS, PAGE_KERNEL);
+ return ptr;
+}
+
+static void gfs2_free_sort_buffer(void *ptr)
+{
+ if (is_vmalloc_addr(ptr))
+ vfree(ptr);
+ else
+ kfree(ptr);
+}
+
static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
filldir_t filldir, int *copied, unsigned *depth,
u64 leaf_no)
@@ -1271,7 +1290,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
* 99 is the maximum number of entries that can fit in a single
* leaf block.
*/
- larr = vmalloc((leaves + entries + 99) * sizeof(void *));
+ larr = gfs2_alloc_sort_buffer((leaves + entries + 99) * sizeof(void *));
if (!larr)
goto out;
darr = (const struct gfs2_dirent **)(larr + leaves);
@@ -1282,7 +1301,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
do {
error = get_leaf(ip, lfn, &bh);
if (error)
- goto out_kfree;
+ goto out_free;
lf = (struct gfs2_leaf *)bh->b_data;
lfn = be64_to_cpu(lf->lf_next);
if (lf->lf_entries) {
@@ -1291,7 +1310,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
gfs2_dirent_gather, NULL, &g);
error = PTR_ERR(dent);
if (IS_ERR(dent))
- goto out_kfree;
+ goto out_free;
if (entries2 != g.offset) {
fs_warn(sdp, "Number of entries corrupt in dir "
"leaf %llu, entries2 (%u) != "
@@ -1300,7 +1319,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
entries2, g.offset);
error = -EIO;
- goto out_kfree;
+ goto out_free;
}
error = 0;
larr[leaf++] = bh;
@@ -1312,10 +1331,10 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
BUG_ON(entries2 != entries);
error = do_filldir_main(ip, offset, opaque, filldir, darr,
entries, copied);
-out_kfree:
+out_free:
for(i = 0; i < leaf; i++)
brelse(larr[i]);
- vfree(larr);
+ gfs2_free_sort_buffer(larr);
out:
return error;
}
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 36a5e74f51b4..f036153d9f50 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -27,6 +27,7 @@
#include <linux/pagemap.h>
#include <linux/aio.h>
#include <linux/gfp.h>
+#include <linux/swap.h>
#include <asm/uaccess.h>
#include <asm/system.h>
@@ -493,11 +494,19 @@ static void nfs_invalidate_page(struct page *page, unsigned long offset)
*/
static int nfs_release_page(struct page *page, gfp_t gfp)
{
+ struct address_space *mapping = page->mapping;
+
dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page);
/* Only do I/O if gfp is a superset of GFP_KERNEL */
- if ((gfp & GFP_KERNEL) == GFP_KERNEL)
- nfs_wb_page(page->mapping->host, page);
+ if (mapping && (gfp & GFP_KERNEL) == GFP_KERNEL) {
+ int how = FLUSH_SYNC;
+
+ /* Don't let kswapd deadlock waiting for OOM RPC calls */
+ if (current_is_kswapd())
+ how = 0;
+ nfs_commit_inode(mapping->host, how);
+ }
/* If PagePrivate() is set, then the page is not freeable */
if (PagePrivate(page))
return 0;
diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c
index 6bd19d843af7..df101d9f546a 100644
--- a/fs/nfs/nfsroot.c
+++ b/fs/nfs/nfsroot.c
@@ -105,7 +105,7 @@ static char nfs_root_name[256] __initdata = "";
static __be32 servaddr __initdata = 0;
/* Name of directory to mount */
-static char nfs_export_path[NFS_MAXPATHLEN] __initdata = { 0, };
+static char nfs_export_path[NFS_MAXPATHLEN + 1] __initdata = { 0, };
/* NFS-related data */
static struct nfs_mount_data nfs_data __initdata = { 0, };/* NFS mount info */
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 91679e2631ee..9f81bdd91c55 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -222,7 +222,7 @@ static void nfs_end_page_writeback(struct page *page)
clear_bdi_congested(&nfss->backing_dev_info, BLK_RW_ASYNC);
}
-static struct nfs_page *nfs_find_and_lock_request(struct page *page)
+static struct nfs_page *nfs_find_and_lock_request(struct page *page, bool nonblock)
{
struct inode *inode = page->mapping->host;
struct nfs_page *req;
@@ -241,7 +241,10 @@ static struct nfs_page *nfs_find_and_lock_request(struct page *page)
* request as dirty (in which case we don't care).
*/
spin_unlock(&inode->i_lock);
- ret = nfs_wait_on_request(req);
+ if (!nonblock)
+ ret = nfs_wait_on_request(req);
+ else
+ ret = -EAGAIN;
nfs_release_request(req);
if (ret != 0)
return ERR_PTR(ret);
@@ -256,12 +259,12 @@ static struct nfs_page *nfs_find_and_lock_request(struct page *page)
* May return an error if the user signalled nfs_wait_on_request().
*/
static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
- struct page *page)
+ struct page *page, bool nonblock)
{
struct nfs_page *req;
int ret = 0;
- req = nfs_find_and_lock_request(page);
+ req = nfs_find_and_lock_request(page, nonblock);
if (!req)
goto out;
ret = PTR_ERR(req);
@@ -283,12 +286,20 @@ out:
static int nfs_do_writepage(struct page *page, struct writeback_control *wbc, struct nfs_pageio_descriptor *pgio)
{
struct inode *inode = page->mapping->host;
+ int ret;
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGE);
nfs_add_stats(inode, NFSIOS_WRITEPAGES, 1);
nfs_pageio_cond_complete(pgio, page->index);
- return nfs_page_async_flush(pgio, page);
+ ret = nfs_page_async_flush(pgio, page,
+ wbc->sync_mode == WB_SYNC_NONE ||
+ wbc->nonblocking != 0);
+ if (ret == -EAGAIN) {
+ redirty_page_for_writepage(wbc, page);
+ ret = 0;
+ }
+ return ret;
}
/*
@@ -1379,7 +1390,7 @@ static const struct rpc_call_ops nfs_commit_ops = {
.rpc_release = nfs_commit_release,
};
-static int nfs_commit_inode(struct inode *inode, int how)
+int nfs_commit_inode(struct inode *inode, int how)
{
LIST_HEAD(head);
int may_wait = how & FLUSH_SYNC;
@@ -1443,11 +1454,6 @@ out_mark_dirty:
return ret;
}
#else
-static int nfs_commit_inode(struct inode *inode, int how)
-{
- return 0;
-}
-
static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_control *wbc)
{
return 0;
@@ -1546,7 +1552,7 @@ int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
nfs_fscache_release_page(page, GFP_KERNEL);
- req = nfs_find_and_lock_request(page);
+ req = nfs_find_and_lock_request(page, false);
ret = PTR_ERR(req);
if (IS_ERR(req))
goto out;
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 9b58d38bc911..fff6572676ae 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -176,7 +176,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
if (tracer)
tpid = task_pid_nr_ns(tracer, ns);
}
- cred = get_cred((struct cred *) __task_cred(p));
+ cred = get_task_cred(p);
seq_printf(m,
"State:\t%s\n"
"Tgid:\t%d\n"
diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index f71246bebfe4..a7ac78f8e67a 100644
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -28,6 +28,7 @@ static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target,
struct sysfs_dirent *target_sd = NULL;
struct sysfs_dirent *sd = NULL;
struct sysfs_addrm_cxt acxt;
+ enum kobj_ns_type ns_type;
int error;
BUG_ON(!name);
@@ -58,16 +59,29 @@ static int sysfs_do_create_link(struct kobject *kobj, struct kobject *target,
if (!sd)
goto out_put;
- if (sysfs_ns_type(parent_sd))
+ ns_type = sysfs_ns_type(parent_sd);
+ if (ns_type)
sd->s_ns = target->ktype->namespace(target);
sd->s_symlink.target_sd = target_sd;
target_sd = NULL; /* reference is now owned by the symlink */
sysfs_addrm_start(&acxt, parent_sd);
- if (warn)
- error = sysfs_add_one(&acxt, sd);
- else
- error = __sysfs_add_one(&acxt, sd);
+ /* Symlinks must be between directories with the same ns_type */
+ if (!ns_type ||
+ (ns_type == sysfs_ns_type(sd->s_symlink.target_sd->s_parent))) {
+ if (warn)
+ error = sysfs_add_one(&acxt, sd);
+ else
+ error = __sysfs_add_one(&acxt, sd);
+ } else {
+ error = -EINVAL;
+ WARN(1, KERN_WARNING
+ "sysfs: symlink across ns_types %s/%s -> %s/%s\n",
+ parent_sd->s_name,
+ sd->s_name,
+ sd->s_symlink.target_sd->s_parent->s_name,
+ sd->s_symlink.target_sd->s_name);
+ }
sysfs_addrm_finish(&acxt);
if (error)
@@ -122,7 +136,7 @@ void sysfs_delete_link(struct kobject *kobj, struct kobject *targ,
{
const void *ns = NULL;
spin_lock(&sysfs_assoc_lock);
- if (targ->sd)
+ if (targ->sd && sysfs_ns_type(kobj->sd))
ns = targ->sd->s_ns;
spin_unlock(&sysfs_assoc_lock);
sysfs_hash_and_remove(kobj->sd, ns, name);