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Diffstat (limited to 'fs')
-rw-r--r--fs/afs/dynroot.c3
-rw-r--r--fs/afs/mntpt.c6
-rw-r--r--fs/afs/proc.c7
-rw-r--r--fs/afs/server.c21
-rw-r--r--fs/afs/super.c2
-rw-r--r--fs/btrfs/Kconfig1
-rw-r--r--fs/erofs/xattr.c2
-rw-r--r--fs/pipe.c36
8 files changed, 52 insertions, 26 deletions
diff --git a/fs/afs/dynroot.c b/fs/afs/dynroot.c
index 4150280509ff..7503899c0a1b 100644
--- a/fs/afs/dynroot.c
+++ b/fs/afs/dynroot.c
@@ -136,6 +136,9 @@ static struct dentry *afs_dynroot_lookup(struct inode *dir, struct dentry *dentr
ASSERTCMP(d_inode(dentry), ==, NULL);
+ if (flags & LOOKUP_CREATE)
+ return ERR_PTR(-EOPNOTSUPP);
+
if (dentry->d_name.len >= AFSNAMEMAX) {
_leave(" = -ENAMETOOLONG");
return ERR_PTR(-ENAMETOOLONG);
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index f532d6d3bd28..79bc5f1338ed 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -126,7 +126,7 @@ static int afs_mntpt_set_params(struct fs_context *fc, struct dentry *mntpt)
if (src_as->cell)
ctx->cell = afs_get_cell(src_as->cell);
- if (size > PAGE_SIZE - 1)
+ if (size < 2 || size > PAGE_SIZE - 1)
return -EINVAL;
page = read_mapping_page(d_inode(mntpt)->i_mapping, 0, NULL);
@@ -140,7 +140,9 @@ static int afs_mntpt_set_params(struct fs_context *fc, struct dentry *mntpt)
}
buf = kmap(page);
- ret = vfs_parse_fs_string(fc, "source", buf, size);
+ ret = -EINVAL;
+ if (buf[size - 1] == '.')
+ ret = vfs_parse_fs_string(fc, "source", buf, size - 1);
kunmap(page);
put_page(page);
if (ret < 0)
diff --git a/fs/afs/proc.c b/fs/afs/proc.c
index fba2ec3a3a9c..468e1713bce1 100644
--- a/fs/afs/proc.c
+++ b/fs/afs/proc.c
@@ -213,13 +213,14 @@ static int afs_proc_cell_volumes_show(struct seq_file *m, void *v)
/* Display header on line 1 */
if (v == &cell->proc_volumes) {
- seq_puts(m, "USE VID TY\n");
+ seq_puts(m, "USE VID TY NAME\n");
return 0;
}
- seq_printf(m, "%3d %08llx %s\n",
+ seq_printf(m, "%3d %08llx %s %s\n",
atomic_read(&vol->usage), vol->vid,
- afs_vol_types[vol->type]);
+ afs_vol_types[vol->type],
+ vol->name);
return 0;
}
diff --git a/fs/afs/server.c b/fs/afs/server.c
index 1686bf188ccd..b7f3cb2130ca 100644
--- a/fs/afs/server.c
+++ b/fs/afs/server.c
@@ -32,18 +32,11 @@ static void afs_dec_servers_outstanding(struct afs_net *net)
struct afs_server *afs_find_server(struct afs_net *net,
const struct sockaddr_rxrpc *srx)
{
- const struct sockaddr_in6 *a = &srx->transport.sin6, *b;
const struct afs_addr_list *alist;
struct afs_server *server = NULL;
unsigned int i;
- bool ipv6 = true;
int seq = 0, diff;
- if (srx->transport.sin6.sin6_addr.s6_addr32[0] == 0 ||
- srx->transport.sin6.sin6_addr.s6_addr32[1] == 0 ||
- srx->transport.sin6.sin6_addr.s6_addr32[2] == htonl(0xffff))
- ipv6 = false;
-
rcu_read_lock();
do {
@@ -52,7 +45,8 @@ struct afs_server *afs_find_server(struct afs_net *net,
server = NULL;
read_seqbegin_or_lock(&net->fs_addr_lock, &seq);
- if (ipv6) {
+ if (srx->transport.family == AF_INET6) {
+ const struct sockaddr_in6 *a = &srx->transport.sin6, *b;
hlist_for_each_entry_rcu(server, &net->fs_addresses6, addr6_link) {
alist = rcu_dereference(server->addresses);
for (i = alist->nr_ipv4; i < alist->nr_addrs; i++) {
@@ -68,15 +62,16 @@ struct afs_server *afs_find_server(struct afs_net *net,
}
}
} else {
+ const struct sockaddr_in *a = &srx->transport.sin, *b;
hlist_for_each_entry_rcu(server, &net->fs_addresses4, addr4_link) {
alist = rcu_dereference(server->addresses);
for (i = 0; i < alist->nr_ipv4; i++) {
- b = &alist->addrs[i].transport.sin6;
- diff = ((u16 __force)a->sin6_port -
- (u16 __force)b->sin6_port);
+ b = &alist->addrs[i].transport.sin;
+ diff = ((u16 __force)a->sin_port -
+ (u16 __force)b->sin_port);
if (diff == 0)
- diff = ((u32 __force)a->sin6_addr.s6_addr32[3] -
- (u32 __force)b->sin6_addr.s6_addr32[3]);
+ diff = ((u32 __force)a->sin_addr.s_addr -
+ (u32 __force)b->sin_addr.s_addr);
if (diff == 0)
goto found;
}
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 488641b1a418..7f8a9b3137bf 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -404,6 +404,7 @@ static int afs_test_super(struct super_block *sb, struct fs_context *fc)
return (as->net_ns == fc->net_ns &&
as->volume &&
as->volume->vid == ctx->volume->vid &&
+ as->cell == ctx->cell &&
!as->dyn_root);
}
@@ -448,7 +449,6 @@ static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx)
/* allocate the root inode and dentry */
if (as->dyn_root) {
inode = afs_iget_pseudo_dir(sb, true);
- sb->s_flags |= SB_RDONLY;
} else {
sprintf(sb->s_id, "%llu", as->volume->vid);
afs_activate_volume(as->volume);
diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index 75b6d10c9845..575636f6491e 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -7,6 +7,7 @@ config BTRFS_FS
select LIBCRC32C
select CRYPTO_XXHASH
select CRYPTO_SHA256
+ select CRYPTO_BLAKE2B
select ZLIB_INFLATE
select ZLIB_DEFLATE
select LZO_COMPRESS
diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
index a13a78725c57..b766c3ee5fa8 100644
--- a/fs/erofs/xattr.c
+++ b/fs/erofs/xattr.c
@@ -649,6 +649,8 @@ ssize_t erofs_listxattr(struct dentry *dentry,
struct listxattr_iter it;
ret = init_inode_xattrs(d_inode(dentry));
+ if (ret == -ENOATTR)
+ return 0;
if (ret)
return ret;
diff --git a/fs/pipe.c b/fs/pipe.c
index 87109e761fa5..04d004ee2e8c 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -364,17 +364,39 @@ pipe_read(struct kiocb *iocb, struct iov_iter *to)
ret = -EAGAIN;
break;
}
- if (signal_pending(current)) {
- if (!ret)
- ret = -ERESTARTSYS;
- break;
- }
__pipe_unlock(pipe);
- if (was_full) {
+
+ /*
+ * We only get here if we didn't actually read anything.
+ *
+ * However, we could have seen (and removed) a zero-sized
+ * pipe buffer, and might have made space in the buffers
+ * that way.
+ *
+ * You can't make zero-sized pipe buffers by doing an empty
+ * write (not even in packet mode), but they can happen if
+ * the writer gets an EFAULT when trying to fill a buffer
+ * that already got allocated and inserted in the buffer
+ * array.
+ *
+ * So we still need to wake up any pending writers in the
+ * _very_ unlikely case that the pipe was full, but we got
+ * no data.
+ */
+ if (unlikely(was_full)) {
wake_up_interruptible_sync_poll(&pipe->wait, EPOLLOUT | EPOLLWRNORM);
kill_fasync(&pipe->fasync_writers, SIGIO, POLL_OUT);
}
- wait_event_interruptible(pipe->wait, pipe_readable(pipe));
+
+ /*
+ * But because we didn't read anything, at this point we can
+ * just return directly with -ERESTARTSYS if we're interrupted,
+ * since we've done any required wakeups and there's no need
+ * to mark anything accessed. And we've dropped the lock.
+ */
+ if (wait_event_interruptible(pipe->wait, pipe_readable(pipe)) < 0)
+ return -ERESTARTSYS;
+
__pipe_lock(pipe);
was_full = pipe_full(pipe->head, pipe->tail, pipe->max_usage);
}
generated by cgit v1.2.3-70-g09d2 (git 2.48.1) at 2025-03-18 03:23:55 +0000