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authorLinus Torvalds <torvalds@linux-foundation.org>2016-08-02 19:39:09 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-02 19:39:09 -0400
commit72b5ac54d620b29cae23d25f0405f2765b466f72 (patch)
tree276e6313a16f0821cb3da7061372f37b0feb8ace /net
parentc7fac299672ee98a1da90ea2e473180fc75d2c53 (diff)
parenta0f2b65275413b3438e9f55b1427273cd893c3b2 (diff)
downloadop-kernel-dev-72b5ac54d620b29cae23d25f0405f2765b466f72.zip
op-kernel-dev-72b5ac54d620b29cae23d25f0405f2765b466f72.tar.gz
Merge tag 'ceph-for-4.8-rc1' of git://github.com/ceph/ceph-client
Pull Ceph updates from Ilya Dryomov: "The highlights are: - RADOS namespace support in libceph and CephFS (Zheng Yan and myself). The stopgaps added in 4.5 to deny access to inodes in namespaces are removed and CEPH_FEATURE_FS_FILE_LAYOUT_V2 feature bit is now fully supported - A large rework of the MDS cap flushing code (Zheng Yan) - Handle some of ->d_revalidate() in RCU mode (Jeff Layton). We were overly pessimistic before, bailing at the first sight of LOOKUP_RCU On top of that we've got a few CephFS bug fixes, a couple of cleanups and Arnd's workaround for a weird genksyms issue" * tag 'ceph-for-4.8-rc1' of git://github.com/ceph/ceph-client: (34 commits) ceph: fix symbol versioning for ceph_monc_do_statfs ceph: Correctly return NXIO errors from ceph_llseek ceph: Mark the file cache as unreclaimable ceph: optimize cap flush waiting ceph: cleanup ceph_flush_snaps() ceph: kick cap flushes before sending other cap message ceph: introduce an inode flag to indicates if snapflush is needed ceph: avoid sending duplicated cap flush message ceph: unify cap flush and snapcap flush ceph: use list instead of rbtree to track cap flushes ceph: update types of some local varibles ceph: include 'follows' of pending snapflush in cap reconnect message ceph: update cap reconnect message to version 3 ceph: mount non-default filesystem by name libceph: fsmap.user subscription support ceph: handle LOOKUP_RCU in ceph_d_revalidate ceph: allow dentry_lease_is_valid to work under RCU walk ceph: clear d_fsinfo pointer under d_lock ceph: remove ceph_mdsc_lease_release ceph: don't use ->d_time ...
Diffstat (limited to 'net')
-rw-r--r--net/ceph/Makefile2
-rw-r--r--net/ceph/ceph_common.c2
-rw-r--r--net/ceph/ceph_fs.c30
-rw-r--r--net/ceph/debugfs.c12
-rw-r--r--net/ceph/mon_client.c4
-rw-r--r--net/ceph/msgpool.c1
-rw-r--r--net/ceph/osd_client.c49
-rw-r--r--net/ceph/osdmap.c58
-rw-r--r--net/ceph/string_table.c111
9 files changed, 245 insertions, 24 deletions
diff --git a/net/ceph/Makefile b/net/ceph/Makefile
index 958d9856..84cbed6 100644
--- a/net/ceph/Makefile
+++ b/net/ceph/Makefile
@@ -11,5 +11,5 @@ libceph-y := ceph_common.o messenger.o msgpool.o buffer.o pagelist.o \
crypto.o armor.o \
auth_x.o \
ceph_fs.o ceph_strings.o ceph_hash.o \
- pagevec.o snapshot.o
+ pagevec.o snapshot.o string_table.o
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 55d2bfe..bddfcf6 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -747,6 +747,8 @@ out:
static void __exit exit_ceph_lib(void)
{
dout("exit_ceph_lib\n");
+ WARN_ON(!ceph_strings_empty());
+
ceph_osdc_cleanup();
ceph_msgr_exit();
ceph_crypto_shutdown();
diff --git a/net/ceph/ceph_fs.c b/net/ceph/ceph_fs.c
index 41466cc..7d54e94 100644
--- a/net/ceph/ceph_fs.c
+++ b/net/ceph/ceph_fs.c
@@ -9,9 +9,9 @@
*/
int ceph_file_layout_is_valid(const struct ceph_file_layout *layout)
{
- __u32 su = le32_to_cpu(layout->fl_stripe_unit);
- __u32 sc = le32_to_cpu(layout->fl_stripe_count);
- __u32 os = le32_to_cpu(layout->fl_object_size);
+ __u32 su = layout->stripe_unit;
+ __u32 sc = layout->stripe_count;
+ __u32 os = layout->object_size;
/* stripe unit, object size must be non-zero, 64k increment */
if (!su || (su & (CEPH_MIN_STRIPE_UNIT-1)))
@@ -27,6 +27,30 @@ int ceph_file_layout_is_valid(const struct ceph_file_layout *layout)
return 1;
}
+void ceph_file_layout_from_legacy(struct ceph_file_layout *fl,
+ struct ceph_file_layout_legacy *legacy)
+{
+ fl->stripe_unit = le32_to_cpu(legacy->fl_stripe_unit);
+ fl->stripe_count = le32_to_cpu(legacy->fl_stripe_count);
+ fl->object_size = le32_to_cpu(legacy->fl_object_size);
+ fl->pool_id = le32_to_cpu(legacy->fl_pg_pool);
+ if (fl->pool_id == 0)
+ fl->pool_id = -1;
+}
+EXPORT_SYMBOL(ceph_file_layout_from_legacy);
+
+void ceph_file_layout_to_legacy(struct ceph_file_layout *fl,
+ struct ceph_file_layout_legacy *legacy)
+{
+ legacy->fl_stripe_unit = cpu_to_le32(fl->stripe_unit);
+ legacy->fl_stripe_count = cpu_to_le32(fl->stripe_count);
+ legacy->fl_object_size = cpu_to_le32(fl->object_size);
+ if (fl->pool_id >= 0)
+ legacy->fl_pg_pool = cpu_to_le32(fl->pool_id);
+ else
+ legacy->fl_pg_pool = 0;
+}
+EXPORT_SYMBOL(ceph_file_layout_to_legacy);
int ceph_flags_to_mode(int flags)
{
diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c
index e77b04c..c62b2b0 100644
--- a/net/ceph/debugfs.c
+++ b/net/ceph/debugfs.c
@@ -156,8 +156,16 @@ static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t)
seq_printf(s, "]/%d\t[", t->up.primary);
for (i = 0; i < t->acting.size; i++)
seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]);
- seq_printf(s, "]/%d\t%*pE\t0x%x", t->acting.primary,
- t->target_oid.name_len, t->target_oid.name, t->flags);
+ seq_printf(s, "]/%d\t", t->acting.primary);
+ if (t->target_oloc.pool_ns) {
+ seq_printf(s, "%*pE/%*pE\t0x%x",
+ (int)t->target_oloc.pool_ns->len,
+ t->target_oloc.pool_ns->str,
+ t->target_oid.name_len, t->target_oid.name, t->flags);
+ } else {
+ seq_printf(s, "%*pE\t0x%x", t->target_oid.name_len,
+ t->target_oid.name, t->flags);
+ }
if (t->paused)
seq_puts(s, "\tP");
}
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index 37c38a7..c83326c 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -227,9 +227,10 @@ static void __schedule_delayed(struct ceph_mon_client *monc)
}
const char *ceph_sub_str[] = {
- [CEPH_SUB_MDSMAP] = "mdsmap",
[CEPH_SUB_MONMAP] = "monmap",
[CEPH_SUB_OSDMAP] = "osdmap",
+ [CEPH_SUB_FSMAP] = "fsmap.user",
+ [CEPH_SUB_MDSMAP] = "mdsmap",
};
/*
@@ -1193,6 +1194,7 @@ static struct ceph_msg *mon_alloc_msg(struct ceph_connection *con,
case CEPH_MSG_MON_MAP:
case CEPH_MSG_MDS_MAP:
case CEPH_MSG_OSD_MAP:
+ case CEPH_MSG_FS_MAP_USER:
m = ceph_msg_new(type, front_len, GFP_NOFS, false);
if (!m)
return NULL; /* ENOMEM--return skip == 0 */
diff --git a/net/ceph/msgpool.c b/net/ceph/msgpool.c
index ddec1c1..aaed59a 100644
--- a/net/ceph/msgpool.c
+++ b/net/ceph/msgpool.c
@@ -5,6 +5,7 @@
#include <linux/types.h>
#include <linux/vmalloc.h>
+#include <linux/ceph/messenger.h>
#include <linux/ceph/msgpool.h>
static void *msgpool_alloc(gfp_t gfp_mask, void *arg)
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 8946959..b5ec096 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -387,7 +387,9 @@ static void target_copy(struct ceph_osd_request_target *dest,
static void target_destroy(struct ceph_osd_request_target *t)
{
ceph_oid_destroy(&t->base_oid);
+ ceph_oloc_destroy(&t->base_oloc);
ceph_oid_destroy(&t->target_oid);
+ ceph_oloc_destroy(&t->target_oloc);
}
/*
@@ -533,6 +535,11 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
}
EXPORT_SYMBOL(ceph_osdc_alloc_request);
+static int ceph_oloc_encoding_size(struct ceph_object_locator *oloc)
+{
+ return 8 + 4 + 4 + 4 + (oloc->pool_ns ? oloc->pool_ns->len : 0);
+}
+
int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp)
{
struct ceph_osd_client *osdc = req->r_osdc;
@@ -540,11 +547,13 @@ int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp)
int msg_size;
WARN_ON(ceph_oid_empty(&req->r_base_oid));
+ WARN_ON(ceph_oloc_empty(&req->r_base_oloc));
/* create request message */
msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */
msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */
- msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */
+ msg_size += CEPH_ENCODING_START_BLK_LEN +
+ ceph_oloc_encoding_size(&req->r_base_oloc); /* oloc */
msg_size += 1 + 8 + 4 + 4; /* pgid */
msg_size += 4 + req->r_base_oid.name_len; /* oid */
msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op);
@@ -932,7 +941,7 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) {
osd_req_op_init(req, which, opcode, 0);
} else {
- u32 object_size = le32_to_cpu(layout->fl_object_size);
+ u32 object_size = layout->object_size;
u32 object_base = off - objoff;
if (!(truncate_seq == 1 && truncate_size == -1ULL)) {
if (truncate_size <= object_base) {
@@ -948,7 +957,8 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
}
req->r_flags = flags;
- req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout);
+ req->r_base_oloc.pool = layout->pool_id;
+ req->r_base_oloc.pool_ns = ceph_try_get_string(layout->pool_ns);
ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum);
req->r_snapid = vino.snap;
@@ -1489,12 +1499,16 @@ static void encode_request(struct ceph_osd_request *req, struct ceph_msg *msg)
p += sizeof(req->r_replay_version);
/* oloc */
- ceph_encode_8(&p, 4);
- ceph_encode_8(&p, 4);
- ceph_encode_32(&p, 8 + 4 + 4);
+ ceph_start_encoding(&p, 5, 4,
+ ceph_oloc_encoding_size(&req->r_t.target_oloc));
ceph_encode_64(&p, req->r_t.target_oloc.pool);
ceph_encode_32(&p, -1); /* preferred */
ceph_encode_32(&p, 0); /* key len */
+ if (req->r_t.target_oloc.pool_ns)
+ ceph_encode_string(&p, end, req->r_t.target_oloc.pool_ns->str,
+ req->r_t.target_oloc.pool_ns->len);
+ else
+ ceph_encode_32(&p, 0);
/* pgid */
ceph_encode_8(&p, 1);
@@ -2594,9 +2608,22 @@ static int ceph_oloc_decode(void **p, void *end,
}
if (struct_v >= 5) {
+ bool changed = false;
+
len = ceph_decode_32(p);
if (len > 0) {
- pr_warn("ceph_object_locator::nspace is set\n");
+ ceph_decode_need(p, end, len, e_inval);
+ if (!oloc->pool_ns ||
+ ceph_compare_string(oloc->pool_ns, *p, len))
+ changed = true;
+ *p += len;
+ } else {
+ if (oloc->pool_ns)
+ changed = true;
+ }
+ if (changed) {
+ /* redirect changes namespace */
+ pr_warn("ceph_object_locator::nspace is changed\n");
goto e_inval;
}
}
@@ -2806,7 +2833,9 @@ static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg)
goto out_unlock_session;
}
+ m.redirect.oloc.pool_ns = req->r_t.target_oloc.pool_ns;
ret = decode_MOSDOpReply(msg, &m);
+ m.redirect.oloc.pool_ns = NULL;
if (ret) {
pr_err("failed to decode MOSDOpReply for tid %llu: %d\n",
req->r_tid, ret);
@@ -2835,7 +2864,11 @@ static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg)
unlink_request(osd, req);
mutex_unlock(&osd->lock);
- ceph_oloc_copy(&req->r_t.target_oloc, &m.redirect.oloc);
+ /*
+ * Not ceph_oloc_copy() - changing pool_ns is not
+ * supported.
+ */
+ req->r_t.target_oloc.pool = m.redirect.oloc.pool;
req->r_flags |= CEPH_OSD_FLAG_REDIRECTED;
req->r_tid = 0;
__submit_request(req, false);
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 7e480bf..d243688 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1510,6 +1510,24 @@ bad:
return ERR_PTR(err);
}
+void ceph_oloc_copy(struct ceph_object_locator *dest,
+ const struct ceph_object_locator *src)
+{
+ WARN_ON(!ceph_oloc_empty(dest));
+ WARN_ON(dest->pool_ns); /* empty() only covers ->pool */
+
+ dest->pool = src->pool;
+ if (src->pool_ns)
+ dest->pool_ns = ceph_get_string(src->pool_ns);
+}
+EXPORT_SYMBOL(ceph_oloc_copy);
+
+void ceph_oloc_destroy(struct ceph_object_locator *oloc)
+{
+ ceph_put_string(oloc->pool_ns);
+}
+EXPORT_SYMBOL(ceph_oloc_destroy);
+
void ceph_oid_copy(struct ceph_object_id *dest,
const struct ceph_object_id *src)
{
@@ -1770,9 +1788,9 @@ int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
u64 *ono,
u64 *oxoff, u64 *oxlen)
{
- u32 osize = le32_to_cpu(layout->fl_object_size);
- u32 su = le32_to_cpu(layout->fl_stripe_unit);
- u32 sc = le32_to_cpu(layout->fl_stripe_count);
+ u32 osize = layout->object_size;
+ u32 su = layout->stripe_unit;
+ u32 sc = layout->stripe_count;
u32 bl, stripeno, stripepos, objsetno;
u32 su_per_object;
u64 t, su_offset;
@@ -1844,12 +1862,34 @@ int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap,
if (!pi)
return -ENOENT;
- raw_pgid->pool = oloc->pool;
- raw_pgid->seed = ceph_str_hash(pi->object_hash, oid->name,
- oid->name_len);
-
- dout("%s %s -> raw_pgid %llu.%x\n", __func__, oid->name,
- raw_pgid->pool, raw_pgid->seed);
+ if (!oloc->pool_ns) {
+ raw_pgid->pool = oloc->pool;
+ raw_pgid->seed = ceph_str_hash(pi->object_hash, oid->name,
+ oid->name_len);
+ dout("%s %s -> raw_pgid %llu.%x\n", __func__, oid->name,
+ raw_pgid->pool, raw_pgid->seed);
+ } else {
+ char stack_buf[256];
+ char *buf = stack_buf;
+ int nsl = oloc->pool_ns->len;
+ size_t total = nsl + 1 + oid->name_len;
+
+ if (total > sizeof(stack_buf)) {
+ buf = kmalloc(total, GFP_NOIO);
+ if (!buf)
+ return -ENOMEM;
+ }
+ memcpy(buf, oloc->pool_ns->str, nsl);
+ buf[nsl] = '\037';
+ memcpy(buf + nsl + 1, oid->name, oid->name_len);
+ raw_pgid->pool = oloc->pool;
+ raw_pgid->seed = ceph_str_hash(pi->object_hash, buf, total);
+ if (buf != stack_buf)
+ kfree(buf);
+ dout("%s %s ns %.*s -> raw_pgid %llu.%x\n", __func__,
+ oid->name, nsl, oloc->pool_ns->str,
+ raw_pgid->pool, raw_pgid->seed);
+ }
return 0;
}
EXPORT_SYMBOL(ceph_object_locator_to_pg);
diff --git a/net/ceph/string_table.c b/net/ceph/string_table.c
new file mode 100644
index 0000000..ca53c83
--- /dev/null
+++ b/net/ceph/string_table.c
@@ -0,0 +1,111 @@
+#include <linux/slab.h>
+#include <linux/gfp.h>
+#include <linux/string.h>
+#include <linux/spinlock.h>
+#include <linux/ceph/string_table.h>
+
+static DEFINE_SPINLOCK(string_tree_lock);
+static struct rb_root string_tree = RB_ROOT;
+
+struct ceph_string *ceph_find_or_create_string(const char* str, size_t len)
+{
+ struct ceph_string *cs, *exist;
+ struct rb_node **p, *parent;
+ int ret;
+
+ exist = NULL;
+ spin_lock(&string_tree_lock);
+ p = &string_tree.rb_node;
+ while (*p) {
+ exist = rb_entry(*p, struct ceph_string, node);
+ ret = ceph_compare_string(exist, str, len);
+ if (ret > 0)
+ p = &(*p)->rb_left;
+ else if (ret < 0)
+ p = &(*p)->rb_right;
+ else
+ break;
+ exist = NULL;
+ }
+ if (exist && !kref_get_unless_zero(&exist->kref)) {
+ rb_erase(&exist->node, &string_tree);
+ RB_CLEAR_NODE(&exist->node);
+ exist = NULL;
+ }
+ spin_unlock(&string_tree_lock);
+ if (exist)
+ return exist;
+
+ cs = kmalloc(sizeof(*cs) + len + 1, GFP_NOFS);
+ if (!cs)
+ return NULL;
+
+ kref_init(&cs->kref);
+ cs->len = len;
+ memcpy(cs->str, str, len);
+ cs->str[len] = 0;
+
+retry:
+ exist = NULL;
+ parent = NULL;
+ p = &string_tree.rb_node;
+ spin_lock(&string_tree_lock);
+ while (*p) {
+ parent = *p;
+ exist = rb_entry(*p, struct ceph_string, node);
+ ret = ceph_compare_string(exist, str, len);
+ if (ret > 0)
+ p = &(*p)->rb_left;
+ else if (ret < 0)
+ p = &(*p)->rb_right;
+ else
+ break;
+ exist = NULL;
+ }
+ ret = 0;
+ if (!exist) {
+ rb_link_node(&cs->node, parent, p);
+ rb_insert_color(&cs->node, &string_tree);
+ } else if (!kref_get_unless_zero(&exist->kref)) {
+ rb_erase(&exist->node, &string_tree);
+ RB_CLEAR_NODE(&exist->node);
+ ret = -EAGAIN;
+ }
+ spin_unlock(&string_tree_lock);
+ if (ret == -EAGAIN)
+ goto retry;
+
+ if (exist) {
+ kfree(cs);
+ cs = exist;
+ }
+
+ return cs;
+}
+EXPORT_SYMBOL(ceph_find_or_create_string);
+
+static void ceph_free_string(struct rcu_head *head)
+{
+ struct ceph_string *cs = container_of(head, struct ceph_string, rcu);
+ kfree(cs);
+}
+
+void ceph_release_string(struct kref *ref)
+{
+ struct ceph_string *cs = container_of(ref, struct ceph_string, kref);
+
+ spin_lock(&string_tree_lock);
+ if (!RB_EMPTY_NODE(&cs->node)) {
+ rb_erase(&cs->node, &string_tree);
+ RB_CLEAR_NODE(&cs->node);
+ }
+ spin_unlock(&string_tree_lock);
+
+ call_rcu(&cs->rcu, ceph_free_string);
+}
+EXPORT_SYMBOL(ceph_release_string);
+
+bool ceph_strings_empty(void)
+{
+ return RB_EMPTY_ROOT(&string_tree);
+}
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