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-rw-r--r--fs/afs/cell.c20
-rw-r--r--fs/afs/cmservice.c16
-rw-r--r--fs/afs/dir.c142
-rw-r--r--fs/afs/dir_edit.c12
-rw-r--r--fs/afs/dir_silly.c23
-rw-r--r--fs/afs/dynroot.c3
-rw-r--r--fs/afs/fs_probe.c20
-rw-r--r--fs/afs/fsclient.c101
-rw-r--r--fs/afs/inode.c12
-rw-r--r--fs/afs/internal.h17
-rw-r--r--fs/afs/mntpt.c6
-rw-r--r--fs/afs/proc.c1
-rw-r--r--fs/afs/rotate.c6
-rw-r--r--fs/afs/rxrpc.c77
-rw-r--r--fs/afs/server.c28
-rw-r--r--fs/afs/super.c2
-rw-r--r--fs/afs/vl_probe.c18
-rw-r--r--fs/afs/volume.c8
-rw-r--r--fs/afs/write.c5
-rw-r--r--fs/afs/yfsclient.c101
20 files changed, 286 insertions, 332 deletions
diff --git a/fs/afs/cell.c b/fs/afs/cell.c
index fd5133e26a38..296b489861a9 100644
--- a/fs/afs/cell.c
+++ b/fs/afs/cell.c
@@ -134,8 +134,17 @@ static struct afs_cell *afs_alloc_cell(struct afs_net *net,
_leave(" = -ENAMETOOLONG");
return ERR_PTR(-ENAMETOOLONG);
}
- if (namelen == 5 && memcmp(name, "@cell", 5) == 0)
+
+ /* Prohibit cell names that contain unprintable chars, '/' and '@' or
+ * that begin with a dot. This also precludes "@cell".
+ */
+ if (name[0] == '.')
return ERR_PTR(-EINVAL);
+ for (i = 0; i < namelen; i++) {
+ char ch = name[i];
+ if (!isprint(ch) || ch == '/' || ch == '@')
+ return ERR_PTR(-EINVAL);
+ }
_enter("%*.*s,%s", namelen, namelen, name, addresses);
@@ -145,10 +154,17 @@ static struct afs_cell *afs_alloc_cell(struct afs_net *net,
return ERR_PTR(-ENOMEM);
}
+ cell->name = kmalloc(namelen + 1, GFP_KERNEL);
+ if (!cell->name) {
+ kfree(cell);
+ return ERR_PTR(-ENOMEM);
+ }
+
cell->net = net;
cell->name_len = namelen;
for (i = 0; i < namelen; i++)
cell->name[i] = tolower(name[i]);
+ cell->name[i] = 0;
atomic_set(&cell->usage, 2);
INIT_WORK(&cell->manager, afs_manage_cell);
@@ -194,6 +210,7 @@ parse_failed:
if (ret == -EINVAL)
printk(KERN_ERR "kAFS: bad VL server IP address\n");
error:
+ kfree(cell->name);
kfree(cell);
_leave(" = %d", ret);
return ERR_PTR(ret);
@@ -474,6 +491,7 @@ static void afs_cell_destroy(struct rcu_head *rcu)
afs_put_vlserverlist(cell->net, rcu_access_pointer(cell->vl_servers));
key_put(cell->anonymous_key);
+ kfree(cell->name);
kfree(cell);
_leave(" [destroyed]");
diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c
index 00033a481ba0..5778a9b9e9bf 100644
--- a/fs/afs/cmservice.c
+++ b/fs/afs/cmservice.c
@@ -169,7 +169,7 @@ static int afs_record_cm_probe(struct afs_call *call, struct afs_server *server)
spin_lock(&server->probe_lock);
- if (!test_bit(AFS_SERVER_FL_HAVE_EPOCH, &server->flags)) {
+ if (!test_and_set_bit(AFS_SERVER_FL_HAVE_EPOCH, &server->flags)) {
server->cm_epoch = call->epoch;
server->probe.cm_epoch = call->epoch;
goto out;
@@ -244,6 +244,17 @@ static void afs_cm_destructor(struct afs_call *call)
}
/*
+ * Abort a service call from within an action function.
+ */
+static void afs_abort_service_call(struct afs_call *call, u32 abort_code, int error,
+ const char *why)
+{
+ rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
+ abort_code, error, why);
+ afs_set_call_complete(call, error, 0);
+}
+
+/*
* The server supplied a list of callbacks that it wanted to break.
*/
static void SRXAFSCB_CallBack(struct work_struct *work)
@@ -507,8 +518,7 @@ static void SRXAFSCB_ProbeUuid(struct work_struct *work)
if (memcmp(r, &call->net->uuid, sizeof(call->net->uuid)) == 0)
afs_send_empty_reply(call);
else
- rxrpc_kernel_abort_call(call->net->socket, call->rxcall,
- 1, 1, "K-1");
+ afs_abort_service_call(call, 1, 1, "K-1");
afs_put_call(call);
_leave("");
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 9bd5c067d55d..429698d0a596 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -659,7 +659,8 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry,
cookie->ctx.actor = afs_lookup_filldir;
cookie->name = dentry->d_name;
- cookie->nr_fids = 1; /* slot 0 is saved for the fid we actually want */
+ cookie->nr_fids = 2; /* slot 0 is saved for the fid we actually want
+ * and slot 1 for the directory */
read_seqlock_excl(&dvnode->cb_lock);
dcbi = rcu_dereference_protected(dvnode->cb_interest,
@@ -710,7 +711,11 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry,
if (!cookie->inodes)
goto out_s;
- for (i = 1; i < cookie->nr_fids; i++) {
+ cookie->fids[1] = dvnode->fid;
+ cookie->statuses[1].cb_break = afs_calc_vnode_cb_break(dvnode);
+ cookie->inodes[1] = igrab(&dvnode->vfs_inode);
+
+ for (i = 2; i < cookie->nr_fids; i++) {
scb = &cookie->statuses[i];
/* Find any inodes that already exist and get their
@@ -804,7 +809,12 @@ success:
continue;
if (cookie->inodes[i]) {
- afs_vnode_commit_status(&fc, AFS_FS_I(cookie->inodes[i]),
+ struct afs_vnode *iv = AFS_FS_I(cookie->inodes[i]);
+
+ if (test_bit(AFS_VNODE_UNSET, &iv->flags))
+ continue;
+
+ afs_vnode_commit_status(&fc, iv,
scb->cb_break, NULL, scb);
continue;
}
@@ -904,6 +914,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
unsigned int flags)
{
struct afs_vnode *dvnode = AFS_FS_I(dir);
+ struct afs_fid fid = {};
struct inode *inode;
struct dentry *d;
struct key *key;
@@ -947,21 +958,18 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
afs_stat_v(dvnode, n_lookup);
inode = afs_do_lookup(dir, dentry, key);
key_put(key);
- if (inode == ERR_PTR(-ENOENT)) {
+ if (inode == ERR_PTR(-ENOENT))
inode = afs_try_auto_mntpt(dentry, dir);
- } else {
- dentry->d_fsdata =
- (void *)(unsigned long)dvnode->status.data_version;
- }
+
+ if (!IS_ERR_OR_NULL(inode))
+ fid = AFS_FS_I(inode)->fid;
+
d = d_splice_alias(inode, dentry);
if (!IS_ERR_OR_NULL(d)) {
d->d_fsdata = dentry->d_fsdata;
- trace_afs_lookup(dvnode, &d->d_name,
- inode ? AFS_FS_I(inode) : NULL);
+ trace_afs_lookup(dvnode, &d->d_name, &fid);
} else {
- trace_afs_lookup(dvnode, &dentry->d_name,
- IS_ERR_OR_NULL(inode) ? NULL
- : AFS_FS_I(inode));
+ trace_afs_lookup(dvnode, &dentry->d_name, &fid);
}
return d;
}
@@ -978,7 +986,7 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags)
struct dentry *parent;
struct inode *inode;
struct key *key;
- afs_dataversion_t dir_version;
+ afs_dataversion_t dir_version, invalid_before;
long de_version;
int ret;
@@ -1030,8 +1038,8 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags)
if (de_version == (long)dir_version)
goto out_valid_noupdate;
- dir_version = dir->invalid_before;
- if (de_version - (long)dir_version >= 0)
+ invalid_before = dir->invalid_before;
+ if (de_version - (long)invalid_before >= 0)
goto out_valid;
_debug("dir modified");
@@ -1221,6 +1229,7 @@ static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
struct afs_fs_cursor fc;
struct afs_vnode *dvnode = AFS_FS_I(dir);
struct key *key;
+ afs_dataversion_t data_version;
int ret;
mode |= S_IFDIR;
@@ -1241,7 +1250,7 @@ static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
+ data_version = dvnode->status.data_version + 1;
while (afs_select_fileserver(&fc)) {
fc.cb_break = afs_calc_vnode_cb_break(dvnode);
@@ -1262,10 +1271,14 @@ static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
goto error_key;
}
- if (ret == 0 &&
- test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid,
- afs_edit_dir_for_create);
+ if (ret == 0) {
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == data_version)
+ afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid,
+ afs_edit_dir_for_create);
+ up_write(&dvnode->validate_lock);
+ }
key_put(key);
kfree(scb);
@@ -1306,6 +1319,7 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry)
struct afs_fs_cursor fc;
struct afs_vnode *dvnode = AFS_FS_I(dir), *vnode = NULL;
struct key *key;
+ afs_dataversion_t data_version;
int ret;
_enter("{%llx:%llu},{%pd}",
@@ -1337,7 +1351,7 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry)
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
+ data_version = dvnode->status.data_version + 1;
while (afs_select_fileserver(&fc)) {
fc.cb_break = afs_calc_vnode_cb_break(dvnode);
@@ -1350,9 +1364,12 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry)
ret = afs_end_vnode_operation(&fc);
if (ret == 0) {
afs_dir_remove_subdir(dentry);
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == data_version)
afs_edit_dir_remove(dvnode, &dentry->d_name,
afs_edit_dir_for_rmdir);
+ up_write(&dvnode->validate_lock);
}
}
@@ -1492,10 +1509,15 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry)
ret = afs_end_vnode_operation(&fc);
if (ret == 0 && !(scb[1].have_status || scb[1].have_error))
ret = afs_dir_remove_link(dvnode, dentry, key);
- if (ret == 0 &&
- test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_remove(dvnode, &dentry->d_name,
- afs_edit_dir_for_unlink);
+
+ if (ret == 0) {
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == data_version)
+ afs_edit_dir_remove(dvnode, &dentry->d_name,
+ afs_edit_dir_for_unlink);
+ up_write(&dvnode->validate_lock);
+ }
}
if (need_rehash && ret < 0 && ret != -ENOENT)
@@ -1521,6 +1543,7 @@ static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
struct afs_status_cb *scb;
struct afs_vnode *dvnode = AFS_FS_I(dir);
struct key *key;
+ afs_dataversion_t data_version;
int ret;
mode |= S_IFREG;
@@ -1545,7 +1568,7 @@ static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
+ data_version = dvnode->status.data_version + 1;
while (afs_select_fileserver(&fc)) {
fc.cb_break = afs_calc_vnode_cb_break(dvnode);
@@ -1566,9 +1589,12 @@ static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
goto error_key;
}
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == data_version)
afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid,
afs_edit_dir_for_create);
+ up_write(&dvnode->validate_lock);
kfree(scb);
key_put(key);
@@ -1596,6 +1622,7 @@ static int afs_link(struct dentry *from, struct inode *dir,
struct afs_vnode *dvnode = AFS_FS_I(dir);
struct afs_vnode *vnode = AFS_FS_I(d_inode(from));
struct key *key;
+ afs_dataversion_t data_version;
int ret;
_enter("{%llx:%llu},{%llx:%llu},{%pd}",
@@ -1620,7 +1647,7 @@ static int afs_link(struct dentry *from, struct inode *dir,
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
+ data_version = dvnode->status.data_version + 1;
if (mutex_lock_interruptible_nested(&vnode->io_lock, 1) < 0) {
afs_end_vnode_operation(&fc);
@@ -1650,9 +1677,12 @@ static int afs_link(struct dentry *from, struct inode *dir,
goto error_key;
}
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == data_version)
afs_edit_dir_add(dvnode, &dentry->d_name, &vnode->fid,
afs_edit_dir_for_link);
+ up_write(&dvnode->validate_lock);
key_put(key);
kfree(scb);
@@ -1680,6 +1710,7 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry,
struct afs_status_cb *scb;
struct afs_vnode *dvnode = AFS_FS_I(dir);
struct key *key;
+ afs_dataversion_t data_version;
int ret;
_enter("{%llx:%llu},{%pd},%s",
@@ -1707,7 +1738,7 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry,
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
+ data_version = dvnode->status.data_version + 1;
while (afs_select_fileserver(&fc)) {
fc.cb_break = afs_calc_vnode_cb_break(dvnode);
@@ -1728,9 +1759,12 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry,
goto error_key;
}
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == data_version)
afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid,
afs_edit_dir_for_symlink);
+ up_write(&dvnode->validate_lock);
key_put(key);
kfree(scb);
@@ -1760,6 +1794,8 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct dentry *tmp = NULL, *rehash = NULL;
struct inode *new_inode;
struct key *key;
+ afs_dataversion_t orig_data_version;
+ afs_dataversion_t new_data_version;
bool new_negative = d_is_negative(new_dentry);
int ret;
@@ -1838,10 +1874,6 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
ret = -ERESTARTSYS;
if (afs_begin_vnode_operation(&fc, orig_dvnode, key, true)) {
- afs_dataversion_t orig_data_version;
- afs_dataversion_t new_data_version;
- struct afs_status_cb *new_scb = &scb[1];
-
orig_data_version = orig_dvnode->status.data_version + 1;
if (orig_dvnode != new_dvnode) {
@@ -1852,7 +1884,6 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
new_data_version = new_dvnode->status.data_version + 1;
} else {
new_data_version = orig_data_version;
- new_scb = &scb[0];
}
while (afs_select_fileserver(&fc)) {
@@ -1860,7 +1891,7 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
fc.cb_break_2 = afs_calc_vnode_cb_break(new_dvnode);
afs_fs_rename(&fc, old_dentry->d_name.name,
new_dvnode, new_dentry->d_name.name,
- &scb[0], new_scb);
+ &scb[0], &scb[1]);
}
afs_vnode_commit_status(&fc, orig_dvnode, fc.cb_break,
@@ -1878,18 +1909,25 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (ret == 0) {
if (rehash)
d_rehash(rehash);
- if (test_bit(AFS_VNODE_DIR_VALID, &orig_dvnode->flags))
- afs_edit_dir_remove(orig_dvnode, &old_dentry->d_name,
- afs_edit_dir_for_rename_0);
+ down_write(&orig_dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &orig_dvnode->flags) &&
+ orig_dvnode->status.data_version == orig_data_version)
+ afs_edit_dir_remove(orig_dvnode, &old_dentry->d_name,
+ afs_edit_dir_for_rename_0);
+ if (orig_dvnode != new_dvnode) {
+ up_write(&orig_dvnode->validate_lock);
- if (!new_negative &&
- test_bit(AFS_VNODE_DIR_VALID, &new_dvnode->flags))
- afs_edit_dir_remove(new_dvnode, &new_dentry->d_name,
- afs_edit_dir_for_rename_1);
+ down_write(&new_dvnode->validate_lock);
+ }
+ if (test_bit(AFS_VNODE_DIR_VALID, &new_dvnode->flags) &&
+ orig_dvnode->status.data_version == new_data_version) {
+ if (!new_negative)
+ afs_edit_dir_remove(new_dvnode, &new_dentry->d_name,
+ afs_edit_dir_for_rename_1);
- if (test_bit(AFS_VNODE_DIR_VALID, &new_dvnode->flags))
afs_edit_dir_add(new_dvnode, &new_dentry->d_name,
&vnode->fid, afs_edit_dir_for_rename_2);
+ }
new_inode = d_inode(new_dentry);
if (new_inode) {
@@ -1905,14 +1943,10 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
* Note that if we ever implement RENAME_EXCHANGE, we'll have
* to update both dentries with opposing dir versions.
*/
- if (new_dvnode != orig_dvnode) {
- afs_update_dentry_version(&fc, old_dentry, &scb[1]);
- afs_update_dentry_version(&fc, new_dentry, &scb[1]);
- } else {
- afs_update_dentry_version(&fc, old_dentry, &scb[0]);
- afs_update_dentry_version(&fc, new_dentry, &scb[0]);
- }
+ afs_update_dentry_version(&fc, old_dentry, &scb[1]);
+ afs_update_dentry_version(&fc, new_dentry, &scb[1]);
d_move(old_dentry, new_dentry);
+ up_write(&new_dvnode->validate_lock);
goto error_tmp;
}
diff --git a/fs/afs/dir_edit.c b/fs/afs/dir_edit.c
index d4fbe5f85f1b..b108528bf010 100644
--- a/fs/afs/dir_edit.c
+++ b/fs/afs/dir_edit.c
@@ -68,13 +68,11 @@ static int afs_find_contig_bits(union afs_xdr_dir_block *block, unsigned int nr_
static void afs_set_contig_bits(union afs_xdr_dir_block *block,
int bit, unsigned int nr_slots)
{
- u64 mask, before, after;
+ u64 mask;
mask = (1 << nr_slots) - 1;
mask <<= bit;
- before = *(u64 *)block->hdr.bitmap;
-
block->hdr.bitmap[0] |= (u8)(mask >> 0 * 8);
block->hdr.bitmap[1] |= (u8)(mask >> 1 * 8);
block->hdr.bitmap[2] |= (u8)(mask >> 2 * 8);
@@ -83,8 +81,6 @@ static void afs_set_contig_bits(union afs_xdr_dir_block *block,
block->hdr.bitmap[5] |= (u8)(mask >> 5 * 8);
block->hdr.bitmap[6] |= (u8)(mask >> 6 * 8);
block->hdr.bitmap[7] |= (u8)(mask >> 7 * 8);
-
- after = *(u64 *)block->hdr.bitmap;
}
/*
@@ -93,13 +89,11 @@ static void afs_set_contig_bits(union afs_xdr_dir_block *block,
static void afs_clear_contig_bits(union afs_xdr_dir_block *block,
int bit, unsigned int nr_slots)
{
- u64 mask, before, after;
+ u64 mask;
mask = (1 << nr_slots) - 1;
mask <<= bit;
- before = *(u64 *)block->hdr.bitmap;
-
block->hdr.bitmap[0] &= ~(u8)(mask >> 0 * 8);
block->hdr.bitmap[1] &= ~(u8)(mask >> 1 * 8);
block->hdr.bitmap[2] &= ~(u8)(mask >> 2 * 8);
@@ -108,8 +102,6 @@ static void afs_clear_contig_bits(union afs_xdr_dir_block *block,
block->hdr.bitmap[5] &= ~(u8)(mask >> 5 * 8);
block->hdr.bitmap[6] &= ~(u8)(mask >> 6 * 8);
block->hdr.bitmap[7] &= ~(u8)(mask >> 7 * 8);
-
- after = *(u64 *)block->hdr.bitmap;
}
/*
diff --git a/fs/afs/dir_silly.c b/fs/afs/dir_silly.c
index 057b8d322422..bb3fcbfd3afc 100644
--- a/fs/afs/dir_silly.c
+++ b/fs/afs/dir_silly.c
@@ -21,6 +21,7 @@ static int afs_do_silly_rename(struct afs_vnode *dvnode, struct afs_vnode *vnode
{
struct afs_fs_cursor fc;
struct afs_status_cb *scb;
+ afs_dataversion_t dir_data_version;
int ret = -ERESTARTSYS;
_enter("%pd,%pd", old, new);
@@ -31,7 +32,7 @@ static int afs_do_silly_rename(struct afs_vnode *dvnode, struct afs_vnode *vnode
trace_afs_silly_rename(vnode, false);
if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t dir_data_version = dvnode->status.data_version + 1;
+ dir_data_version = dvnode->status.data_version + 1;
while (afs_select_fileserver(&fc)) {
fc.cb_break = afs_calc_vnode_cb_break(dvnode);
@@ -54,13 +55,17 @@ static int afs_do_silly_rename(struct afs_vnode *dvnode, struct afs_vnode *vnode
dvnode->silly_key = key_get(key);
}
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == dir_data_version) {
afs_edit_dir_remove(dvnode, &old->d_name,
afs_edit_dir_for_silly_0);
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
afs_edit_dir_add(dvnode, &new->d_name,
&vnode->fid, afs_edit_dir_for_silly_1);
+ }
+ up_write(&dvnode->validate_lock);
+
/* vfs_unlink and the like do not issue this when a file is
* sillyrenamed, so do it here.
*/
@@ -186,10 +191,14 @@ static int afs_do_silly_unlink(struct afs_vnode *dvnode, struct afs_vnode *vnode
clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
}
}
- if (ret == 0 &&
- test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_remove(dvnode, &dentry->d_name,
- afs_edit_dir_for_unlink);
+ if (ret == 0) {
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == dir_data_version)
+ afs_edit_dir_remove(dvnode, &dentry->d_name,
+ afs_edit_dir_for_unlink);
+ up_write(&dvnode->validate_lock);
+ }
}
kfree(scb);
diff --git a/fs/afs/dynroot.c b/fs/afs/dynroot.c
index 9b3b2f1f1fc0..13522d2b0ec9 100644
--- a/fs/afs/dynroot.c
+++ b/fs/afs/dynroot.c
@@ -141,6 +141,9 @@ 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/fs_probe.c b/fs/afs/fs_probe.c
index cfe62b154f68..51ee3dd79700 100644
--- a/fs/afs/fs_probe.c
+++ b/fs/afs/fs_probe.c
@@ -32,9 +32,8 @@ void afs_fileserver_probe_result(struct afs_call *call)
struct afs_server *server = call->server;
unsigned int server_index = call->server_index;
unsigned int index = call->addr_ix;
- unsigned int rtt = UINT_MAX;
+ unsigned int rtt_us;
bool have_result = false;
- u64 _rtt;
int ret = call->error;
_enter("%pU,%u", &server->uuid, index);
@@ -93,15 +92,9 @@ responded:
}
}
- /* Get the RTT and scale it to fit into a 32-bit value that represents
- * over a minute of time so that we can access it with one instruction
- * on a 32-bit system.
- */
- _rtt = rxrpc_kernel_get_rtt(call->net->socket, call->rxcall);
- _rtt /= 64;
- rtt = (_rtt > UINT_MAX) ? UINT_MAX : _rtt;
- if (rtt < server->probe.rtt) {
- server->probe.rtt = rtt;
+ if (rxrpc_kernel_get_srtt(call->net->socket, call->rxcall, &rtt_us) &&
+ rtt_us < server->probe.rtt) {
+ server->probe.rtt = rtt_us;
alist->preferred = index;
have_result = true;
}
@@ -113,8 +106,7 @@ out:
spin_unlock(&server->probe_lock);
_debug("probe [%u][%u] %pISpc rtt=%u ret=%d",
- server_index, index, &alist->addrs[index].transport,
- (unsigned int)rtt, ret);
+ server_index, index, &alist->addrs[index].transport, rtt_us, ret);
have_result |= afs_fs_probe_done(server);
if (have_result) {
@@ -145,6 +137,7 @@ static int afs_do_probe_fileserver(struct afs_net *net,
read_lock(&server->fs_lock);
ac.alist = rcu_dereference_protected(server->addresses,
lockdep_is_held(&server->fs_lock));
+ afs_get_addrlist(ac.alist);
read_unlock(&server->fs_lock);
atomic_set(&server->probe_outstanding, ac.alist->nr_addrs);
@@ -163,6 +156,7 @@ static int afs_do_probe_fileserver(struct afs_net *net,
if (!in_progress)
afs_fs_probe_done(server);
+ afs_put_addrlist(ac.alist);
return in_progress;
}
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index a1ef0266422a..1a6f22700811 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -58,9 +58,9 @@ static void xdr_dump_bad(const __be32 *bp)
/*
* decode an AFSFetchStatus block
*/
-static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
- struct afs_call *call,
- struct afs_status_cb *scb)
+static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
+ struct afs_call *call,
+ struct afs_status_cb *scb)
{
const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
struct afs_file_status *status = &scb->status;
@@ -80,7 +80,7 @@ static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
*/
status->abort_code = abort_code;
scb->have_error = true;
- return 0;
+ goto advance;
}
pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
@@ -89,7 +89,8 @@ static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
if (abort_code != 0 && inline_error) {
status->abort_code = abort_code;
- return 0;
+ scb->have_error = true;
+ goto advance;
}
type = ntohl(xdr->type);
@@ -125,13 +126,14 @@ static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
status->data_version = data_version;
scb->have_status = true;
-
+advance:
*_bp = (const void *)*_bp + sizeof(*xdr);
- return 0;
+ return;
bad:
xdr_dump_bad(*_bp);
- return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
+ afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
+ goto advance;
}
static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry)
@@ -251,9 +253,7 @@ static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_AFSCallBack(&bp, call, call->out_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
@@ -380,8 +380,6 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
ASSERTCMP(req->offset, <=, PAGE_SIZE);
if (req->offset == PAGE_SIZE) {
req->offset = 0;
- if (req->page_done)
- req->page_done(req);
req->index++;
if (req->remain > 0)
goto begin_page;
@@ -415,9 +413,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_AFSCallBack(&bp, call, call->out_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
@@ -434,11 +430,13 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
if (req->offset < PAGE_SIZE)
zero_user_segment(req->pages[req->index],
req->offset, PAGE_SIZE);
- if (req->page_done)
- req->page_done(req);
req->offset = 0;
}
+ if (req->page_done)
+ for (req->index = 0; req->index < req->nr_pages; req->index++)
+ req->page_done(req);
+
_leave(" = 0 [done]");
return 0;
}
@@ -573,12 +571,8 @@ static int afs_deliver_fs_create_vnode(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
xdr_decode_AFSFid(&bp, call->out_fid);
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_AFSCallBack(&bp, call, call->out_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
@@ -687,9 +681,7 @@ static int afs_deliver_fs_dir_status_and_vol(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -780,12 +772,8 @@ static int afs_deliver_fs_link(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -874,12 +862,8 @@ static int afs_deliver_fs_symlink(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
xdr_decode_AFSFid(&bp, call->out_fid);
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -982,16 +966,12 @@ static int afs_deliver_fs_rename(struct afs_call *call)
if (ret < 0)
return ret;
- /* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- if (call->out_dir_scb != call->out_scb) {
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- }
+ /* If the two dirs are the same, we have two copies of the same status
+ * report, so we just decode it twice.
+ */
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -1099,9 +1079,7 @@ static int afs_deliver_fs_store_data(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -1279,9 +1257,7 @@ static int afs_deliver_fs_store_status(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -1941,9 +1917,7 @@ static int afs_deliver_fs_fetch_status(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_AFSCallBack(&bp, call, call->out_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
@@ -2049,10 +2023,7 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
bp = call->buffer;
scb = &call->out_scb[call->count];
- ret = xdr_decode_AFSFetchStatus(&bp, call, scb);
- if (ret < 0)
- return ret;
-
+ xdr_decode_AFSFetchStatus(&bp, call, scb);
call->count++;
if (call->count < call->count2)
goto more_counts;
@@ -2227,9 +2198,7 @@ static int afs_deliver_fs_fetch_acl(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
call->unmarshall++;
@@ -2310,9 +2279,7 @@ static int afs_deliver_fs_file_status_and_vol(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_AFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 18a50d4febcf..ae7a69112c43 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -171,6 +171,7 @@ static void afs_apply_status(struct afs_fs_cursor *fc,
struct timespec64 t;
umode_t mode;
bool data_changed = false;
+ bool change_size = false;
BUG_ON(test_bit(AFS_VNODE_UNSET, &vnode->flags));
@@ -226,6 +227,7 @@ static void afs_apply_status(struct afs_fs_cursor *fc,
} else {
set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
}
+ change_size = true;
} else if (vnode->status.type == AFS_FTYPE_DIR) {
/* Expected directory change is handled elsewhere so
* that we can locally edit the directory and save on a
@@ -233,11 +235,19 @@ static void afs_apply_status(struct afs_fs_cursor *fc,
*/
if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
data_changed = false;
+ change_size = true;
}
if (data_changed) {
inode_set_iversion_raw(&vnode->vfs_inode, status->data_version);
- afs_set_i_size(vnode, status->size);
+
+ /* Only update the size if the data version jumped. If the
+ * file is being modified locally, then we might have our own
+ * idea of what the size should be that's not the same as
+ * what's on the server.
+ */
+ if (change_size)
+ afs_set_i_size(vnode, status->size);
}
}
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 7ee63526c6a2..e16b413d133e 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -154,13 +154,14 @@ struct afs_call {
};
unsigned char unmarshall; /* unmarshalling phase */
unsigned char addr_ix; /* Address in ->alist */
- bool incoming; /* T if incoming call */
+ bool drop_ref; /* T if need to drop ref for incoming call */
bool send_pages; /* T if data from mapping should be sent */
bool need_attention; /* T if RxRPC poked us */
bool async; /* T if asynchronous */
bool upgrade; /* T to request service upgrade */
bool have_reply_time; /* T if have got reply_time */
bool intr; /* T if interruptible */
+ bool unmarshalling_error; /* T if an unmarshalling error occurred */
u16 service_id; /* Actual service ID (after upgrade) */
unsigned int debug_id; /* Trace ID */
u32 operation_ID; /* operation ID for an incoming call */
@@ -396,7 +397,7 @@ struct afs_cell {
struct afs_vlserver_list __rcu *vl_servers;
u8 name_len; /* Length of name */
- char name[64 + 1]; /* Cell name, case-flattened and NUL-padded */
+ char *name; /* Cell name, case-flattened and NUL-padded */
};
/*
@@ -1218,8 +1219,16 @@ static inline void afs_set_call_complete(struct afs_call *call,
ok = true;
}
spin_unlock_bh(&call->state_lock);
- if (ok)
+ if (ok) {
trace_afs_call_done(call);
+
+ /* Asynchronous calls have two refs to release - one from the alloc and
+ * one queued with the work item - and we can't just deallocate the
+ * call because the work item may be queued again.
+ */
+ if (call->drop_ref)
+ afs_put_call(call);
+ }
}
/*
@@ -1340,7 +1349,7 @@ extern struct afs_volume *afs_create_volume(struct afs_fs_context *);
extern void afs_activate_volume(struct afs_volume *);
extern void afs_deactivate_volume(struct afs_volume *);
extern void afs_put_volume(struct afs_cell *, struct afs_volume *);
-extern int afs_check_volume_status(struct afs_volume *, struct key *);
+extern int afs_check_volume_status(struct afs_volume *, struct afs_fs_cursor *);
/*
* write.c
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..106b27011f6d 100644
--- a/fs/afs/proc.c
+++ b/fs/afs/proc.c
@@ -562,6 +562,7 @@ void afs_put_sysnames(struct afs_sysnames *sysnames)
if (sysnames->subs[i] != afs_init_sysname &&
sysnames->subs[i] != sysnames->blank)
kfree(sysnames->subs[i]);
+ kfree(sysnames);
}
}
diff --git a/fs/afs/rotate.c b/fs/afs/rotate.c
index 172ba569cd60..2a3305e42b14 100644
--- a/fs/afs/rotate.c
+++ b/fs/afs/rotate.c
@@ -192,7 +192,7 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
write_unlock(&vnode->volume->servers_lock);
set_bit(AFS_VOLUME_NEEDS_UPDATE, &vnode->volume->flags);
- error = afs_check_volume_status(vnode->volume, fc->key);
+ error = afs_check_volume_status(vnode->volume, fc);
if (error < 0)
goto failed_set_error;
@@ -281,7 +281,7 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
set_bit(AFS_VOLUME_WAIT, &vnode->volume->flags);
set_bit(AFS_VOLUME_NEEDS_UPDATE, &vnode->volume->flags);
- error = afs_check_volume_status(vnode->volume, fc->key);
+ error = afs_check_volume_status(vnode->volume, fc);
if (error < 0)
goto failed_set_error;
@@ -341,7 +341,7 @@ start:
/* See if we need to do an update of the volume record. Note that the
* volume may have moved or even have been deleted.
*/
- error = afs_check_volume_status(vnode->volume, fc->key);
+ error = afs_check_volume_status(vnode->volume, fc);
if (error < 0)
goto failed_set_error;
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index d1dde2834b6d..b4a589a17c99 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -18,7 +18,6 @@ struct workqueue_struct *afs_async_calls;
static void afs_wake_up_call_waiter(struct sock *, struct rxrpc_call *, unsigned long);
static void afs_wake_up_async_call(struct sock *, struct rxrpc_call *, unsigned long);
-static void afs_delete_async_call(struct work_struct *);
static void afs_process_async_call(struct work_struct *);
static void afs_rx_new_call(struct sock *, struct rxrpc_call *, unsigned long);
static void afs_rx_discard_new_call(struct rxrpc_call *, unsigned long);
@@ -169,7 +168,7 @@ void afs_put_call(struct afs_call *call)
int n = atomic_dec_return(&call->usage);
int o = atomic_read(&net->nr_outstanding_calls);
- trace_afs_call(call, afs_call_trace_put, n + 1, o,
+ trace_afs_call(call, afs_call_trace_put, n, o,
__builtin_return_address(0));
ASSERTCMP(n, >=, 0);
@@ -402,8 +401,10 @@ void afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, gfp_t gfp)
/* If the call is going to be asynchronous, we need an extra ref for
* the call to hold itself so the caller need not hang on to its ref.
*/
- if (call->async)
+ if (call->async) {
afs_get_call(call, afs_call_trace_get);
+ call->drop_ref = true;
+ }
/* create a call */
rxcall = rxrpc_kernel_begin_call(call->net->socket, srx, call->key,
@@ -413,7 +414,8 @@ void afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, gfp_t gfp)
afs_wake_up_async_call :
afs_wake_up_call_waiter),
call->upgrade,
- call->intr,
+ (call->intr ? RXRPC_PREINTERRUPTIBLE :
+ RXRPC_UNINTERRUPTIBLE),
call->debug_id);
if (IS_ERR(rxcall)) {
ret = PTR_ERR(rxcall);
@@ -538,6 +540,8 @@ static void afs_deliver_to_call(struct afs_call *call)
ret = call->type->deliver(call);
state = READ_ONCE(call->state);
+ if (ret == 0 && call->unmarshalling_error)
+ ret = -EBADMSG;
switch (ret) {
case 0:
afs_queue_call_work(call);
@@ -584,8 +588,6 @@ static void afs_deliver_to_call(struct afs_call *call)
done:
if (call->type->done)
call->type->done(call);
- if (state == AFS_CALL_COMPLETE && call->incoming)
- afs_put_call(call);
out:
_leave("");
return;
@@ -604,11 +606,7 @@ call_complete:
long afs_wait_for_call_to_complete(struct afs_call *call,
struct afs_addr_cursor *ac)
{
- signed long rtt2, timeout;
long ret;
- bool stalled = false;
- u64 rtt;
- u32 life, last_life;
bool rxrpc_complete = false;
DECLARE_WAITQUEUE(myself, current);
@@ -619,14 +617,6 @@ long afs_wait_for_call_to_complete(struct afs_call *call,
if (ret < 0)
goto out;
- rtt = rxrpc_kernel_get_rtt(call->net->socket, call->rxcall);
- rtt2 = nsecs_to_jiffies64(rtt) * 2;
- if (rtt2 < 2)
- rtt2 = 2;
-
- timeout = rtt2;
- rxrpc_kernel_check_life(call->net->socket, call->rxcall, &last_life);
-
add_wait_queue(&call->waitq, &myself);
for (;;) {
set_current_state(TASK_UNINTERRUPTIBLE);
@@ -643,30 +633,13 @@ long afs_wait_for_call_to_complete(struct afs_call *call,
if (afs_check_call_state(call, AFS_CALL_COMPLETE))
break;
- if (!rxrpc_kernel_check_life(call->net->socket, call->rxcall, &life)) {
+ if (!rxrpc_kernel_check_life(call->net->socket, call->rxcall)) {
/* rxrpc terminated the call. */
rxrpc_complete = true;
break;
}
- if (call->intr && timeout == 0 &&
- life == last_life && signal_pending(current)) {
- if (stalled)
- break;
- __set_current_state(TASK_RUNNING);
- rxrpc_kernel_probe_life(call->net->socket, call->rxcall);
- timeout = rtt2;
- stalled = true;
- continue;
- }
-
- if (life != last_life) {
- timeout = rtt2;
- last_life = life;
- stalled = false;
- }
-
- timeout = schedule_timeout(timeout);
+ schedule();
}
remove_wait_queue(&call->waitq, &myself);
@@ -734,7 +707,7 @@ static void afs_wake_up_async_call(struct sock *sk, struct rxrpc_call *rxcall,
u = atomic_fetch_add_unless(&call->usage, 1, 0);
if (u != 0) {
- trace_afs_call(call, afs_call_trace_wake, u,
+ trace_afs_call(call, afs_call_trace_wake, u + 1,
atomic_read(&call->net->nr_outstanding_calls),
__builtin_return_address(0));
@@ -744,21 +717,6 @@ static void afs_wake_up_async_call(struct sock *sk, struct rxrpc_call *rxcall,
}
/*
- * Delete an asynchronous call. The work item carries a ref to the call struct
- * that we need to release.
- */
-static void afs_delete_async_call(struct work_struct *work)
-{
- struct afs_call *call = container_of(work, struct afs_call, async_work);
-
- _enter("");
-
- afs_put_call(call);
-
- _leave("");
-}
-
-/*
* Perform I/O processing on an asynchronous call. The work item carries a ref
* to the call struct that we either need to release or to pass on.
*/
@@ -773,16 +731,6 @@ static void afs_process_async_call(struct work_struct *work)
afs_deliver_to_call(call);
}
- if (call->state == AFS_CALL_COMPLETE) {
- /* We have two refs to release - one from the alloc and one
- * queued with the work item - and we can't just deallocate the
- * call because the work item may be queued again.
- */
- call->async_work.func = afs_delete_async_call;
- if (!queue_work(afs_async_calls, &call->async_work))
- afs_put_call(call);
- }
-
afs_put_call(call);
_leave("");
}
@@ -809,6 +757,7 @@ void afs_charge_preallocation(struct work_struct *work)
if (!call)
break;
+ call->drop_ref = true;
call->async = true;
call->state = AFS_CALL_SV_AWAIT_OP_ID;
init_waitqueue_head(&call->waitq);
@@ -1016,5 +965,7 @@ noinline int afs_protocol_error(struct afs_call *call, int error,
enum afs_eproto_cause cause)
{
trace_afs_protocol_error(call, error, cause);
+ if (call)
+ call->unmarshalling_error = true;
return error;
}
diff --git a/fs/afs/server.c b/fs/afs/server.c
index e900cd74361b..1caea74b8c11 100644
--- a/fs/afs/server.c
+++ b/fs/afs/server.c
@@ -31,18 +31,11 @@ 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 {
@@ -51,7 +44,8 @@ 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++) {
@@ -67,15 +61,16 @@ 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;
}
@@ -575,12 +570,9 @@ retry:
}
ret = wait_on_bit(&server->flags, AFS_SERVER_FL_UPDATING,
- TASK_INTERRUPTIBLE);
+ (fc->flags & AFS_FS_CURSOR_INTR) ?
+ TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
if (ret == -ERESTARTSYS) {
- if (!(fc->flags & AFS_FS_CURSOR_INTR) && server->addresses) {
- _leave(" = t [intr]");
- return true;
- }
fc->error = ret;
_leave(" = f [intr]");
return false;
diff --git a/fs/afs/super.c b/fs/afs/super.c
index f18911e8d770..ce61340b5de6 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);
}
@@ -447,7 +448,6 @@ 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/afs/vl_probe.c b/fs/afs/vl_probe.c
index 858498cc1b05..081b7e5b13f5 100644
--- a/fs/afs/vl_probe.c
+++ b/fs/afs/vl_probe.c
@@ -31,10 +31,9 @@ void afs_vlserver_probe_result(struct afs_call *call)
struct afs_addr_list *alist = call->alist;
struct afs_vlserver *server = call->vlserver;
unsigned int server_index = call->server_index;
+ unsigned int rtt_us = 0;
unsigned int index = call->addr_ix;
- unsigned int rtt = UINT_MAX;
bool have_result = false;
- u64 _rtt;
int ret = call->error;
_enter("%s,%u,%u,%d,%d", server->name, server_index, index, ret, call->abort_code);
@@ -93,15 +92,9 @@ responded:
}
}
- /* Get the RTT and scale it to fit into a 32-bit value that represents
- * over a minute of time so that we can access it with one instruction
- * on a 32-bit system.
- */
- _rtt = rxrpc_kernel_get_rtt(call->net->socket, call->rxcall);
- _rtt /= 64;
- rtt = (_rtt > UINT_MAX) ? UINT_MAX : _rtt;
- if (rtt < server->probe.rtt) {
- server->probe.rtt = rtt;
+ if (rxrpc_kernel_get_srtt(call->net->socket, call->rxcall, &rtt_us) &&
+ rtt_us < server->probe.rtt) {
+ server->probe.rtt = rtt_us;
alist->preferred = index;
have_result = true;
}
@@ -113,8 +106,7 @@ out:
spin_unlock(&server->probe_lock);
_debug("probe [%u][%u] %pISpc rtt=%u ret=%d",
- server_index, index, &alist->addrs[index].transport,
- (unsigned int)rtt, ret);
+ server_index, index, &alist->addrs[index].transport, rtt_us, ret);
have_result |= afs_vl_probe_done(server);
if (have_result) {
diff --git a/fs/afs/volume.c b/fs/afs/volume.c
index 1a414300b654..9e03e593b548 100644
--- a/fs/afs/volume.c
+++ b/fs/afs/volume.c
@@ -283,7 +283,7 @@ error:
/*
* Make sure the volume record is up to date.
*/
-int afs_check_volume_status(struct afs_volume *volume, struct key *key)
+int afs_check_volume_status(struct afs_volume *volume, struct afs_fs_cursor *fc)
{
time64_t now = ktime_get_real_seconds();
int ret, retries = 0;
@@ -301,7 +301,7 @@ retry:
}
if (!test_and_set_bit_lock(AFS_VOLUME_UPDATING, &volume->flags)) {
- ret = afs_update_volume_status(volume, key);
+ ret = afs_update_volume_status(volume, fc->key);
clear_bit_unlock(AFS_VOLUME_WAIT, &volume->flags);
clear_bit_unlock(AFS_VOLUME_UPDATING, &volume->flags);
wake_up_bit(&volume->flags, AFS_VOLUME_WAIT);
@@ -314,7 +314,9 @@ retry:
return 0;
}
- ret = wait_on_bit(&volume->flags, AFS_VOLUME_WAIT, TASK_INTERRUPTIBLE);
+ ret = wait_on_bit(&volume->flags, AFS_VOLUME_WAIT,
+ (fc->flags & AFS_FS_CURSOR_INTR) ?
+ TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
if (ret == -ERESTARTSYS) {
_leave(" = %d", ret);
return ret;
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 98eb7adbce91..34b50b2eeb97 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -195,11 +195,11 @@ int afs_write_end(struct file *file, struct address_space *mapping,
i_size = i_size_read(&vnode->vfs_inode);
if (maybe_i_size > i_size) {
- spin_lock(&vnode->wb_lock);
+ write_seqlock(&vnode->cb_lock);
i_size = i_size_read(&vnode->vfs_inode);
if (maybe_i_size > i_size)
i_size_write(&vnode->vfs_inode, maybe_i_size);
- spin_unlock(&vnode->wb_lock);
+ write_sequnlock(&vnode->cb_lock);
}
if (!PageUptodate(page)) {
@@ -812,6 +812,7 @@ vm_fault_t afs_page_mkwrite(struct vm_fault *vmf)
vmf->page->index, priv);
SetPagePrivate(vmf->page);
set_page_private(vmf->page, priv);
+ file_update_time(file);
sb_end_pagefault(inode->i_sb);
return VM_FAULT_LOCKED;
diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c
index a1baf3f1f14d..1f94278f3bca 100644
--- a/fs/afs/yfsclient.c
+++ b/fs/afs/yfsclient.c
@@ -165,23 +165,23 @@ static void xdr_dump_bad(const __be32 *bp)
int i;
pr_notice("YFS XDR: Bad status record\n");
- for (i = 0; i < 5 * 4 * 4; i += 16) {
+ for (i = 0; i < 6 * 4 * 4; i += 16) {
memcpy(x, bp, 16);
bp += 4;
pr_notice("%03x: %08x %08x %08x %08x\n",
i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
}
- memcpy(x, bp, 4);
- pr_notice("0x50: %08x\n", ntohl(x[0]));
+ memcpy(x, bp, 8);
+ pr_notice("0x60: %08x %08x\n", ntohl(x[0]), ntohl(x[1]));
}
/*
* Decode a YFSFetchStatus block
*/
-static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
- struct afs_call *call,
- struct afs_status_cb *scb)
+static void xdr_decode_YFSFetchStatus(const __be32 **_bp,
+ struct afs_call *call,
+ struct afs_status_cb *scb)
{
const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
struct afs_file_status *status = &scb->status;
@@ -192,7 +192,7 @@ static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
if (status->abort_code == VNOVNODE)
status->nlink = 0;
scb->have_error = true;
- return 0;
+ goto advance;
}
type = ntohl(xdr->type);
@@ -220,13 +220,14 @@ static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
status->size = xdr_to_u64(xdr->size);
status->data_version = xdr_to_u64(xdr->data_version);
scb->have_status = true;
-
+advance:
*_bp += xdr_size(xdr);
- return 0;
+ return;
bad:
xdr_dump_bad(*_bp);
- return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
+ afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
+ goto advance;
}
/*
@@ -344,9 +345,7 @@ static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSCallBack(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
@@ -368,9 +367,7 @@ static int yfs_deliver_status_and_volsync(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -491,8 +488,6 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
ASSERTCMP(req->offset, <=, PAGE_SIZE);
if (req->offset == PAGE_SIZE) {
req->offset = 0;
- if (req->page_done)
- req->page_done(req);
req->index++;
if (req->remain > 0)
goto begin_page;
@@ -529,9 +524,7 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSCallBack(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
@@ -549,11 +542,13 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
if (req->offset < PAGE_SIZE)
zero_user_segment(req->pages[req->index],
req->offset, PAGE_SIZE);
- if (req->page_done)
- req->page_done(req);
req->offset = 0;
}
+ if (req->page_done)
+ for (req->index = 0; req->index < req->nr_pages; req->index++)
+ req->page_done(req);
+
_leave(" = 0 [done]");
return 0;
}
@@ -638,12 +633,8 @@ static int yfs_deliver_fs_create_vnode(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
xdr_decode_YFSFid(&bp, call->out_fid);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSCallBack(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
@@ -796,14 +787,9 @@ static int yfs_deliver_fs_remove_file2(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
-
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSFid(&bp, &fid);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
/* Was deleted if vnode->status.abort_code == VNOVNODE. */
xdr_decode_YFSVolSync(&bp, call->out_volsync);
@@ -883,10 +869,7 @@ static int yfs_deliver_fs_remove(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
-
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
return 0;
}
@@ -968,12 +951,8 @@ static int yfs_deliver_fs_link(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
return 0;
@@ -1055,12 +1034,8 @@ static int yfs_deliver_fs_symlink(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
xdr_decode_YFSFid(&bp, call->out_fid);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
@@ -1148,15 +1123,11 @@ static int yfs_deliver_fs_rename(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- if (call->out_dir_scb != call->out_scb) {
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- }
-
+ /* If the two dirs are the same, we have two copies of the same status
+ * report, so we just decode it twice.
+ */
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
_leave(" = 0 [done]");
return 0;
@@ -1834,9 +1805,7 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
bp = call->buffer;
scb = &call->out_scb[call->count];
- ret = xdr_decode_YFSFetchStatus(&bp, call, scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, scb);
call->count++;
if (call->count < call->count2)
@@ -2051,9 +2020,7 @@ static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
bp = call->buffer;
yacl->inherit_flag = ntohl(*bp++);
yacl->num_cleaned = ntohl(*bp++);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
xdr_decode_YFSVolSync(&bp, call->out_volsync);
call->unmarshall++;
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-27 20:35:30 +0000