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Merge tag 'ceph-for-4.11-rc1' of git://github.com/ceph/ceph-client

Browse Source 
Pull ceph updates from Ilya Dryomov:
 "This time around we have:

   - support for rbd data-pool feature, which enables rbd images on
     erasure-coded pools (myself). CEPH_PG_MAX_SIZE has been bumped to
     allow erasure-coded profiles with k+m up to 32.

   - a patch for ceph_d_revalidate() performance regression introduced
     in 4.9, along with some cleanups in the area (Jeff Layton)

   - a set of fixes for unsafe ->d_parent accesses in CephFS (Jeff
     Layton)

   - buffered reads are now processed in rsize windows instead of rasize
     windows (Andreas Gerstmayr). The new default for rsize mount option
     is 64M.

   - ack vs commit distinction is gone, greatly simplifying ->fsync()
     and MOSDOpReply handling code (myself)

  ... also a few filesystem bug fixes from Zheng, a CRUSH sync up (CRUSH
  computations are still serialized though) and several minor fixes and
  cleanups all over"

* tag 'ceph-for-4.11-rc1' of git://github.com/ceph/ceph-client: (52 commits)
  libceph, rbd, ceph: WRITE | ONDISK -> WRITE
  libceph: get rid of ack vs commit
  ceph: remove special ack vs commit behavior
  ceph: tidy some white space in get_nonsnap_parent()
  crush: fix dprintk compilation
  crush: do is_out test only if we do not collide
  ceph: remove req from unsafe list when unregistering it
  rbd: constify device_type structure
  rbd: kill obj_request->object_name and rbd_segment_name_cache
  rbd: store and use obj_request->object_no
  rbd: RBD_V{1,2}_DATA_FORMAT macros
  rbd: factor out __rbd_osd_req_create()
  rbd: set offset and length outside of rbd_obj_request_create()
  rbd: support for data-pool feature
  rbd: introduce rbd_init_layout()
  rbd: use rbd_obj_bytes() more
  rbd: remove now unused rbd_obj_request_wait() and helpers
  rbd: switch rbd_obj_method_sync() to ceph_osdc_call()
  libceph: pass reply buffer length through ceph_osdc_call()
  rbd: do away with obj_request in rbd_obj_read_sync()
  ...
This commit is contained in:
Linus Torvalds
2017-02-28 15:36:09 -08:00
parent d4f4cf77b3 54ea0046b6
commit b2deee2dc0
28 changed files with 835 additions and 932 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
Documentation/filesystems/ceph.txt
View File

@@ -98,11 +98,10 @@ Mount Options
size.
rsize=X
Specify the maximum read size in bytes. By default there is no
maximum.
Specify the maximum read size in bytes. Default: 64 MB.
rasize=X
Specify the maximum readahead.
Specify the maximum readahead. Default: 8 MB.
mount_timeout=X
Specify the timeout value for mount (in seconds), in the case

601
drivers/block/rbd.c
View File

File diff suppressed because it is too large Load Diff

10
drivers/block/rbd_types.h
View File

@@ -25,8 +25,8 @@
*/
#define RBD_HEADER_PREFIX "rbd_header."
#define RBD_DATA_PREFIX "rbd_data."
#define RBD_ID_PREFIX "rbd_id."
#define RBD_V2_DATA_FORMAT "%s.%016llx"
#define RBD_LOCK_NAME "rbd_lock"
#define RBD_LOCK_TAG "internal"
@@ -42,13 +42,14 @@ enum rbd_notify_op {
/*
* For format version 1, rbd image 'foo' consists of objects
* foo.rbd - image metadata
* rb.<idhi>.<idlo>.00000000
* rb.<idhi>.<idlo>.00000001
* rb.<idhi>.<idlo>.<extra>.000000000000
* rb.<idhi>.<idlo>.<extra>.000000000001
* ... - data
* There is no notion of a persistent image id in rbd format 1.
*/
#define RBD_SUFFIX ".rbd"
#define RBD_V1_DATA_FORMAT "%s.%012llx"
#define RBD_DIRECTORY "rbd_directory"
#define RBD_INFO "rbd_info"
@@ -57,9 +58,6 @@ enum rbd_notify_op {
#define RBD_MIN_OBJ_ORDER 16
#define RBD_MAX_OBJ_ORDER 30
#define RBD_COMP_NONE 0
#define RBD_CRYPT_NONE 0
#define RBD_HEADER_TEXT "<<< Rados Block Device Image >>>\n"
#define RBD_HEADER_SIGNATURE "RBD"
#define RBD_HEADER_VERSION "001.005"

19
fs/ceph/addr.c
View File

@@ -391,6 +391,7 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max)
nr_pages = i;
if (nr_pages > 0) {
len = nr_pages << PAGE_SHIFT;
osd_req_op_extent_update(req, 0, len);
break;
}
goto out_pages;
@@ -771,7 +772,7 @@ static int ceph_writepages_start(struct address_space *mapping,
wbc->sync_mode == WB_SYNC_NONE ? "NONE" :
(wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD"));
if (ACCESS_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
if (READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
if (ci->i_wrbuffer_ref > 0) {
pr_warn_ratelimited(
"writepage_start %p %lld forced umount\n",
@@ -1017,8 +1018,7 @@ new_request:
&ci->i_layout, vino,
offset, &len, 0, num_ops,
CEPH_OSD_OP_WRITE,
CEPH_OSD_FLAG_WRITE |
CEPH_OSD_FLAG_ONDISK,
CEPH_OSD_FLAG_WRITE,
snapc, truncate_seq,
truncate_size, false);
if (IS_ERR(req)) {
@@ -1028,8 +1028,7 @@ new_request:
min(num_ops,
CEPH_OSD_SLAB_OPS),
CEPH_OSD_OP_WRITE,
CEPH_OSD_FLAG_WRITE |
CEPH_OSD_FLAG_ONDISK,
CEPH_OSD_FLAG_WRITE,
snapc, truncate_seq,
truncate_size, true);
BUG_ON(IS_ERR(req));
@@ -1194,7 +1193,7 @@ static int ceph_update_writeable_page(struct file *file,
int r;
struct ceph_snap_context *snapc, *oldest;
if (ACCESS_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
if (READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
dout(" page %p forced umount\n", page);
unlock_page(page);
return -EIO;
@@ -1681,8 +1680,7 @@ int ceph_uninline_data(struct file *filp, struct page *locked_page)
req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout,
ceph_vino(inode), 0, &len, 0, 1,
CEPH_OSD_OP_CREATE,
CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE,
CEPH_OSD_OP_CREATE, CEPH_OSD_FLAG_WRITE,
NULL, 0, 0, false);
if (IS_ERR(req)) {
err = PTR_ERR(req);
@@ -1699,8 +1697,7 @@ int ceph_uninline_data(struct file *filp, struct page *locked_page)
req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout,
ceph_vino(inode), 0, &len, 1, 3,
CEPH_OSD_OP_WRITE,
CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE,
CEPH_OSD_OP_WRITE, CEPH_OSD_FLAG_WRITE,
NULL, ci->i_truncate_seq,
ci->i_truncate_size, false);
if (IS_ERR(req)) {
@@ -1873,7 +1870,7 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci,
goto out_unlock;
}
wr_req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ACK;
wr_req->r_flags = CEPH_OSD_FLAG_WRITE;
osd_req_op_init(wr_req, 0, CEPH_OSD_OP_CREATE, CEPH_OSD_OP_FLAG_EXCL);
ceph_oloc_copy(&wr_req->r_base_oloc, &rd_req->r_base_oloc);
ceph_oid_copy(&wr_req->r_base_oid, &rd_req->r_base_oid);

2
fs/ceph/cache.c
View File

@@ -234,7 +234,7 @@ void ceph_fscache_file_set_cookie(struct inode *inode, struct file *filp)
fscache_enable_cookie(ci->fscache, ceph_fscache_can_enable,
inode);
if (fscache_cookie_enabled(ci->fscache)) {
dout("fscache_file_set_cookie %p %p enabing cache\n",
dout("fscache_file_set_cookie %p %p enabling cache\n",
inode, filp);
}
}

40
fs/ceph/caps.c
View File

@@ -867,7 +867,7 @@ int __ceph_caps_file_wanted(struct ceph_inode_info *ci)
/*
* Return caps we have registered with the MDS(s) as 'wanted'.
*/
int __ceph_caps_mds_wanted(struct ceph_inode_info *ci)
int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check)
{
struct ceph_cap *cap;
struct rb_node *p;
@@ -875,7 +875,7 @@ int __ceph_caps_mds_wanted(struct ceph_inode_info *ci)
for (p = rb_first(&ci->i_caps); p; p = rb_next(p)) {
cap = rb_entry(p, struct ceph_cap, ci_node);
if (!__cap_is_valid(cap))
if (check && !__cap_is_valid(cap))
continue;
if (cap == ci->i_auth_cap)
mds_wanted |= cap->mds_wanted;
@@ -1184,6 +1184,13 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
delayed = 1;
}
ci->i_ceph_flags &= ~(CEPH_I_NODELAY | CEPH_I_FLUSH);
if (want & ~cap->mds_wanted) {
/* user space may open/close single file frequently.
* This avoids droping mds_wanted immediately after
* requesting new mds_wanted.
*/
__cap_set_timeouts(mdsc, ci);
}
cap->issued &= retain; /* drop bits we don't want */
if (cap->implemented & ~cap->issued) {
@@ -2084,8 +2091,6 @@ int ceph_fsync(struct file *file, loff_t start, loff_t end, int datasync)
dout("fsync %p%s\n", inode, datasync ? " datasync" : "");
ceph_sync_write_wait(inode);
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (ret < 0)
goto out;
@@ -2477,23 +2482,22 @@ again:
if (ci->i_ceph_flags & CEPH_I_CAP_DROPPED) {
int mds_wanted;
if (ACCESS_ONCE(mdsc->fsc->mount_state) ==
if (READ_ONCE(mdsc->fsc->mount_state) ==
CEPH_MOUNT_SHUTDOWN) {
dout("get_cap_refs %p forced umount\n", inode);
*err = -EIO;
ret = 1;
goto out_unlock;
}
mds_wanted = __ceph_caps_mds_wanted(ci);
if ((mds_wanted & need) != need) {
mds_wanted = __ceph_caps_mds_wanted(ci, false);
if (need & ~(mds_wanted & need)) {
dout("get_cap_refs %p caps were dropped"
" (session killed?)\n", inode);
*err = -ESTALE;
ret = 1;
goto out_unlock;
}
if ((mds_wanted & file_wanted) ==
(file_wanted & (CEPH_CAP_FILE_RD|CEPH_CAP_FILE_WR)))
if (!(file_wanted & ~mds_wanted))
ci->i_ceph_flags &= ~CEPH_I_CAP_DROPPED;
}
@@ -3404,6 +3408,7 @@ retry:
tcap->implemented |= issued;
if (cap == ci->i_auth_cap)
ci->i_auth_cap = tcap;
if (!list_empty(&ci->i_cap_flush_list) &&
ci->i_auth_cap == tcap) {
spin_lock(&mdsc->cap_dirty_lock);
@@ -3417,9 +3422,18 @@ retry:
} else if (tsession) {
/* add placeholder for the export tagert */
int flag = (cap == ci->i_auth_cap) ? CEPH_CAP_FLAG_AUTH : 0;
tcap = new_cap;
ceph_add_cap(inode, tsession, t_cap_id, -1, issued, 0,
t_seq - 1, t_mseq, (u64)-1, flag, &new_cap);
if (!list_empty(&ci->i_cap_flush_list) &&
ci->i_auth_cap == tcap) {
spin_lock(&mdsc->cap_dirty_lock);
list_move_tail(&ci->i_flushing_item,
&tcap->session->s_cap_flushing);
spin_unlock(&mdsc->cap_dirty_lock);
}
__ceph_remove_cap(cap, false);
goto out_unlock;
}
@@ -3924,9 +3938,10 @@ int ceph_encode_inode_release(void **p, struct inode *inode,
}
int ceph_encode_dentry_release(void **p, struct dentry *dentry,
struct inode *dir,
int mds, int drop, int unless)
{
struct inode *dir = d_inode(dentry->d_parent);
struct dentry *parent = NULL;
struct ceph_mds_request_release *rel = *p;
struct ceph_dentry_info *di = ceph_dentry(dentry);
int force = 0;
@@ -3941,9 +3956,14 @@ int ceph_encode_dentry_release(void **p, struct dentry *dentry,
spin_lock(&dentry->d_lock);
if (di->lease_session && di->lease_session->s_mds == mds)
force = 1;
if (!dir) {
parent = dget(dentry->d_parent);
dir = d_inode(parent);
}
spin_unlock(&dentry->d_lock);
ret = ceph_encode_inode_release(p, dir, mds, drop, unless, force);
dput(parent);
spin_lock(&dentry->d_lock);
if (ret && di->lease_session && di->lease_session->s_mds == mds) {

2
fs/ceph/debugfs.c
View File

@@ -70,7 +70,7 @@ static int mdsc_show(struct seq_file *s, void *p)
seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
if (req->r_got_unsafe)
if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
seq_puts(s, "\t(unsafe)");
else
seq_puts(s, "\t");

32
fs/ceph/dir.c
View File

@@ -371,7 +371,7 @@ more:
/* hints to request -> mds selection code */
req->r_direct_mode = USE_AUTH_MDS;
req->r_direct_hash = ceph_frag_value(frag);
req->r_direct_is_hash = true;
__set_bit(CEPH_MDS_R_DIRECT_IS_HASH, &req->r_req_flags);
if (fi->last_name) {
req->r_path2 = kstrdup(fi->last_name, GFP_KERNEL);
if (!req->r_path2) {
@@ -417,7 +417,7 @@ more:
fi->frag = frag;
fi->last_readdir = req;
if (req->r_did_prepopulate) {
if (test_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags)) {
fi->readdir_cache_idx = req->r_readdir_cache_idx;
if (fi->readdir_cache_idx < 0) {
/* preclude from marking dir ordered */
@@ -752,7 +752,8 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
mask |= CEPH_CAP_XATTR_SHARED;
req->r_args.getattr.mask = cpu_to_le32(mask);
req->r_locked_dir = dir;
req->r_parent = dir;
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
err = ceph_mdsc_do_request(mdsc, NULL, req);
err = ceph_handle_snapdir(req, dentry, err);
dentry = ceph_finish_lookup(req, dentry, err);
@@ -813,7 +814,8 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry,
}
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
req->r_locked_dir = dir;
req->r_parent = dir;
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
req->r_args.mknod.mode = cpu_to_le32(mode);
req->r_args.mknod.rdev = cpu_to_le32(rdev);
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
@@ -864,7 +866,8 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry,
ceph_mdsc_put_request(req);
goto out;
}
req->r_locked_dir = dir;
req->r_parent = dir;
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
@@ -913,7 +916,8 @@ static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
req->r_locked_dir = dir;
req->r_parent = dir;
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
req->r_args.mkdir.mode = cpu_to_le32(mode);
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
@@ -957,7 +961,8 @@ static int ceph_link(struct dentry *old_dentry, struct inode *dir,
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
req->r_old_dentry = dget(old_dentry);
req->r_locked_dir = dir;
req->r_parent = dir;
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
/* release LINK_SHARED on source inode (mds will lock it) */
@@ -1023,7 +1028,8 @@ static int ceph_unlink(struct inode *dir, struct dentry *dentry)
}
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
req->r_locked_dir = dir;
req->r_parent = dir;
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
req->r_inode_drop = drop_caps_for_unlink(inode);
@@ -1066,7 +1072,8 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,
req->r_num_caps = 2;
req->r_old_dentry = dget(old_dentry);
req->r_old_dentry_dir = old_dir;
req->r_locked_dir = new_dir;
req->r_parent = new_dir;
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
req->r_old_dentry_drop = CEPH_CAP_FILE_SHARED;
req->r_old_dentry_unless = CEPH_CAP_FILE_EXCL;
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
@@ -1194,7 +1201,7 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
struct inode *dir;
if (flags & LOOKUP_RCU) {
parent = ACCESS_ONCE(dentry->d_parent);
parent = READ_ONCE(dentry->d_parent);
dir = d_inode_rcu(parent);
if (!dir)
return -ECHILD;
@@ -1237,11 +1244,12 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
return -ECHILD;
op = ceph_snap(dir) == CEPH_SNAPDIR ?
CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_GETATTR;
CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_LOOKUP;
req = ceph_mdsc_create_request(mdsc, op, USE_ANY_MDS);
if (!IS_ERR(req)) {
req->r_dentry = dget(dentry);
req->r_num_caps = op == CEPH_MDS_OP_GETATTR ? 1 : 2;
req->r_num_caps = 2;
req->r_parent = dir;
mask = CEPH_STAT_CAP_INODE | CEPH_CAP_AUTH_SHARED;
if (ceph_security_xattr_wanted(dir))

3
fs/ceph/export.c
View File

@@ -207,7 +207,8 @@ static int ceph_get_name(struct dentry *parent, char *name,
req->r_inode = d_inode(child);
ihold(d_inode(child));
req->r_ino2 = ceph_vino(d_inode(parent));
req->r_locked_dir = d_inode(parent);
req->r_parent = d_inode(parent);
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
req->r_num_caps = 2;
err = ceph_mdsc_do_request(mdsc, NULL, req);

106
fs/ceph/file.c
View File

@@ -283,7 +283,7 @@ int ceph_open(struct inode *inode, struct file *file)
spin_lock(&ci->i_ceph_lock);
if (__ceph_is_any_real_caps(ci) &&
(((fmode & CEPH_FILE_MODE_WR) == 0) || ci->i_auth_cap)) {
int mds_wanted = __ceph_caps_mds_wanted(ci);
int mds_wanted = __ceph_caps_mds_wanted(ci, true);
int issued = __ceph_caps_issued(ci, NULL);
dout("open %p fmode %d want %s issued %s using existing\n",
@@ -379,7 +379,8 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
mask |= CEPH_CAP_XATTR_SHARED;
req->r_args.open.mask = cpu_to_le32(mask);
req->r_locked_dir = dir; /* caller holds dir->i_mutex */
req->r_parent = dir;
set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags);
err = ceph_mdsc_do_request(mdsc,
(flags & (O_CREAT|O_TRUNC)) ? dir : NULL,
req);
@@ -758,9 +759,7 @@ static void ceph_aio_retry_work(struct work_struct *work)
goto out;
}
req->r_flags = CEPH_OSD_FLAG_ORDERSNAP |
CEPH_OSD_FLAG_ONDISK |
CEPH_OSD_FLAG_WRITE;
req->r_flags = CEPH_OSD_FLAG_ORDERSNAP | CEPH_OSD_FLAG_WRITE;
ceph_oloc_copy(&req->r_base_oloc, &orig_req->r_base_oloc);
ceph_oid_copy(&req->r_base_oid, &orig_req->r_base_oid);
@@ -794,89 +793,6 @@ out:
kfree(aio_work);
}
/*
* Write commit request unsafe callback, called to tell us when a
* request is unsafe (that is, in flight--has been handed to the
* messenger to send to its target osd). It is called again when
* we've received a response message indicating the request is
* "safe" (its CEPH_OSD_FLAG_ONDISK flag is set), or when a request
* is completed early (and unsuccessfully) due to a timeout or
* interrupt.
*
* This is used if we requested both an ACK and ONDISK commit reply
* from the OSD.
*/
static void ceph_sync_write_unsafe(struct ceph_osd_request *req, bool unsafe)
{
struct ceph_inode_info *ci = ceph_inode(req->r_inode);
dout("%s %p tid %llu %ssafe\n", __func__, req, req->r_tid,
unsafe ? "un" : "");
if (unsafe) {
ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR);
spin_lock(&ci->i_unsafe_lock);
list_add_tail(&req->r_unsafe_item,
&ci->i_unsafe_writes);
spin_unlock(&ci->i_unsafe_lock);
complete_all(&req->r_completion);
} else {
spin_lock(&ci->i_unsafe_lock);
list_del_init(&req->r_unsafe_item);
spin_unlock(&ci->i_unsafe_lock);
ceph_put_cap_refs(ci, CEPH_CAP_FILE_WR);
}
}
/*
* Wait on any unsafe replies for the given inode. First wait on the
* newest request, and make that the upper bound. Then, if there are
* more requests, keep waiting on the oldest as long as it is still older
* than the original request.
*/
void ceph_sync_write_wait(struct inode *inode)
{
struct ceph_inode_info *ci = ceph_inode(inode);
struct list_head *head = &ci->i_unsafe_writes;
struct ceph_osd_request *req;
u64 last_tid;
if (!S_ISREG(inode->i_mode))
return;
spin_lock(&ci->i_unsafe_lock);
if (list_empty(head))
goto out;
/* set upper bound as _last_ entry in chain */
req = list_last_entry(head, struct ceph_osd_request,
r_unsafe_item);
last_tid = req->r_tid;
do {
ceph_osdc_get_request(req);
spin_unlock(&ci->i_unsafe_lock);
dout("sync_write_wait on tid %llu (until %llu)\n",
req->r_tid, last_tid);
wait_for_completion(&req->r_done_completion);
ceph_osdc_put_request(req);
spin_lock(&ci->i_unsafe_lock);
/*
* from here on look at first entry in chain, since we
* only want to wait for anything older than last_tid
*/
if (list_empty(head))
break;
req = list_first_entry(head, struct ceph_osd_request,
r_unsafe_item);
} while (req->r_tid < last_tid);
out:
spin_unlock(&ci->i_unsafe_lock);
}
static ssize_t
ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter,
struct ceph_snap_context *snapc,
@@ -915,9 +831,7 @@ ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter,
if (ret2 < 0)
dout("invalidate_inode_pages2_range returned %d\n", ret2);
flags = CEPH_OSD_FLAG_ORDERSNAP |
CEPH_OSD_FLAG_ONDISK |
CEPH_OSD_FLAG_WRITE;
flags = CEPH_OSD_FLAG_ORDERSNAP | CEPH_OSD_FLAG_WRITE;
} else {
flags = CEPH_OSD_FLAG_READ;
}
@@ -1116,10 +1030,7 @@ ceph_sync_write(struct kiocb *iocb, struct iov_iter *from, loff_t pos,
if (ret < 0)
dout("invalidate_inode_pages2_range returned %d\n", ret);
flags = CEPH_OSD_FLAG_ORDERSNAP |
CEPH_OSD_FLAG_ONDISK |
CEPH_OSD_FLAG_WRITE |
CEPH_OSD_FLAG_ACK;
flags = CEPH_OSD_FLAG_ORDERSNAP | CEPH_OSD_FLAG_WRITE;
while ((len = iov_iter_count(from)) > 0) {
size_t left;
@@ -1165,8 +1076,6 @@ ceph_sync_write(struct kiocb *iocb, struct iov_iter *from, loff_t pos,
goto out;
}
/* get a second commit callback */
req->r_unsafe_callback = ceph_sync_write_unsafe;
req->r_inode = inode;
osd_req_op_extent_osd_data_pages(req, 0, pages, len, 0,
@@ -1616,8 +1525,7 @@ static int ceph_zero_partial_object(struct inode *inode,
ceph_vino(inode),
offset, length,
0, 1, op,
CEPH_OSD_FLAG_WRITE |
CEPH_OSD_FLAG_ONDISK,
CEPH_OSD_FLAG_WRITE,
NULL, 0, 0, false);
if (IS_ERR(req)) {
ret = PTR_ERR(req);

172
fs/ceph/inode.c
View File

@@ -499,7 +499,6 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
ci->i_rdcache_gen = 0;
ci->i_rdcache_revoking = 0;
INIT_LIST_HEAD(&ci->i_unsafe_writes);
INIT_LIST_HEAD(&ci->i_unsafe_dirops);
INIT_LIST_HEAD(&ci->i_unsafe_iops);
spin_lock_init(&ci->i_unsafe_lock);
@@ -583,14 +582,6 @@ int ceph_drop_inode(struct inode *inode)
return 1;
}
void ceph_evict_inode(struct inode *inode)
{
/* wait unsafe sync writes */
ceph_sync_write_wait(inode);
truncate_inode_pages_final(&inode->i_data);
clear_inode(inode);
}
static inline blkcnt_t calc_inode_blocks(u64 size)
{
return (size + (1<<9) - 1) >> 9;
@@ -1016,7 +1007,9 @@ out:
static void update_dentry_lease(struct dentry *dentry,
struct ceph_mds_reply_lease *lease,
struct ceph_mds_session *session,
unsigned long from_time)
unsigned long from_time,
struct ceph_vino *tgt_vino,
struct ceph_vino *dir_vino)
{
struct ceph_dentry_info *di = ceph_dentry(dentry);
long unsigned duration = le32_to_cpu(lease->duration_ms);
@@ -1024,13 +1017,27 @@ static void update_dentry_lease(struct dentry *dentry,
long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000;
struct inode *dir;
/*
* Make sure dentry's inode matches tgt_vino. NULL tgt_vino means that
* we expect a negative dentry.
*/
if (!tgt_vino && d_really_is_positive(dentry))
return;
if (tgt_vino && (d_really_is_negative(dentry) ||
!ceph_ino_compare(d_inode(dentry), tgt_vino)))
return;
spin_lock(&dentry->d_lock);
dout("update_dentry_lease %p duration %lu ms ttl %lu\n",
dentry, duration, ttl);
/* make lease_rdcache_gen match directory */
dir = d_inode(dentry->d_parent);
/* make sure parent matches dir_vino */
if (!ceph_ino_compare(dir, dir_vino))
goto out_unlock;
/* only track leases on regular dentries */
if (ceph_snap(dir) != CEPH_NOSNAP)
goto out_unlock;
@@ -1108,61 +1115,27 @@ out:
*
* Called with snap_rwsem (read).
*/
int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
struct ceph_mds_session *session)
int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req)
{
struct ceph_mds_session *session = req->r_session;
struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info;
struct inode *in = NULL;
struct ceph_vino vino;
struct ceph_vino tvino, dvino;
struct ceph_fs_client *fsc = ceph_sb_to_client(sb);
int err = 0;
dout("fill_trace %p is_dentry %d is_target %d\n", req,
rinfo->head->is_dentry, rinfo->head->is_target);
#if 0
/*
* Debugging hook:
*
* If we resend completed ops to a recovering mds, we get no
* trace. Since that is very rare, pretend this is the case
* to ensure the 'no trace' handlers in the callers behave.
*
* Fill in inodes unconditionally to avoid breaking cap
* invariants.
*/
if (rinfo->head->op & CEPH_MDS_OP_WRITE) {
pr_info("fill_trace faking empty trace on %lld %s\n",
req->r_tid, ceph_mds_op_name(rinfo->head->op));
if (rinfo->head->is_dentry) {
rinfo->head->is_dentry = 0;
err = fill_inode(req->r_locked_dir,
&rinfo->diri, rinfo->dirfrag,
session, req->r_request_started, -1);
}
if (rinfo->head->is_target) {
rinfo->head->is_target = 0;
ininfo = rinfo->targeti.in;
vino.ino = le64_to_cpu(ininfo->ino);
vino.snap = le64_to_cpu(ininfo->snapid);
in = ceph_get_inode(sb, vino);
err = fill_inode(in, &rinfo->targeti, NULL,
session, req->r_request_started,
req->r_fmode);
iput(in);
}
}
#endif
if (!rinfo->head->is_target && !rinfo->head->is_dentry) {
dout("fill_trace reply is empty!\n");
if (rinfo->head->result == 0 && req->r_locked_dir)
if (rinfo->head->result == 0 && req->r_parent)
ceph_invalidate_dir_request(req);
return 0;
}
if (rinfo->head->is_dentry) {
struct inode *dir = req->r_locked_dir;
struct inode *dir = req->r_parent;
if (dir) {
err = fill_inode(dir, NULL,
@@ -1188,8 +1161,8 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
dname.name = rinfo->dname;
dname.len = rinfo->dname_len;
dname.hash = full_name_hash(parent, dname.name, dname.len);
vino.ino = le64_to_cpu(rinfo->targeti.in->ino);
vino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
tvino.ino = le64_to_cpu(rinfo->targeti.in->ino);
tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
retry_lookup:
dn = d_lookup(parent, &dname);
dout("d_lookup on parent=%p name=%.*s got %p\n",
@@ -1206,8 +1179,8 @@ retry_lookup:
}
err = 0;
} else if (d_really_is_positive(dn) &&
(ceph_ino(d_inode(dn)) != vino.ino ||
ceph_snap(d_inode(dn)) != vino.snap)) {
(ceph_ino(d_inode(dn)) != tvino.ino ||
ceph_snap(d_inode(dn)) != tvino.snap)) {
dout(" dn %p points to wrong inode %p\n",
dn, d_inode(dn));
d_delete(dn);
@@ -1221,10 +1194,10 @@ retry_lookup:
}
if (rinfo->head->is_target) {
vino.ino = le64_to_cpu(rinfo->targeti.in->ino);
vino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
tvino.ino = le64_to_cpu(rinfo->targeti.in->ino);
tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
in = ceph_get_inode(sb, vino);
in = ceph_get_inode(sb, tvino);
if (IS_ERR(in)) {
err = PTR_ERR(in);
goto done;
@@ -1233,8 +1206,8 @@ retry_lookup:
err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL,
session, req->r_request_started,
(!req->r_aborted && rinfo->head->result == 0) ?
req->r_fmode : -1,
(!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) &&
rinfo->head->result == 0) ? req->r_fmode : -1,
&req->r_caps_reservation);
if (err < 0) {
pr_err("fill_inode badness %p %llx.%llx\n",
@@ -1247,8 +1220,9 @@ retry_lookup:
* ignore null lease/binding on snapdir ENOENT, or else we
* will have trouble splicing in the virtual snapdir later
*/
if (rinfo->head->is_dentry && !req->r_aborted &&
req->r_locked_dir &&
if (rinfo->head->is_dentry &&
!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) &&
test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) &&
(rinfo->head->is_target || strncmp(req->r_dentry->d_name.name,
fsc->mount_options->snapdir_name,
req->r_dentry->d_name.len))) {
@@ -1257,17 +1231,19 @@ retry_lookup:
* mknod symlink mkdir : null -> new inode
* unlink : linked -> null
*/
struct inode *dir = req->r_locked_dir;
struct inode *dir = req->r_parent;
struct dentry *dn = req->r_dentry;
bool have_dir_cap, have_lease;
BUG_ON(!dn);
BUG_ON(!dir);
BUG_ON(d_inode(dn->d_parent) != dir);
BUG_ON(ceph_ino(dir) !=
le64_to_cpu(rinfo->diri.in->ino));
BUG_ON(ceph_snap(dir) !=
le64_to_cpu(rinfo->diri.in->snapid));
dvino.ino = le64_to_cpu(rinfo->diri.in->ino);
dvino.snap = le64_to_cpu(rinfo->diri.in->snapid);
BUG_ON(ceph_ino(dir) != dvino.ino);
BUG_ON(ceph_snap(dir) != dvino.snap);
/* do we have a lease on the whole dir? */
have_dir_cap =
@@ -1319,12 +1295,13 @@ retry_lookup:
ceph_dir_clear_ordered(dir);
dout("d_delete %p\n", dn);
d_delete(dn);
} else {
if (have_lease && d_unhashed(dn))
} else if (have_lease) {
if (d_unhashed(dn))
d_add(dn, NULL);
update_dentry_lease(dn, rinfo->dlease,
session,
req->r_request_started);
req->r_request_started,
NULL, &dvino);
}
goto done;
}
@@ -1347,15 +1324,19 @@ retry_lookup:
have_lease = false;
}
if (have_lease)
if (have_lease) {
tvino.ino = le64_to_cpu(rinfo->targeti.in->ino);
tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
update_dentry_lease(dn, rinfo->dlease, session,
req->r_request_started);
req->r_request_started,
&tvino, &dvino);
}
dout(" final dn %p\n", dn);
} else if (!req->r_aborted &&
(req->r_op == CEPH_MDS_OP_LOOKUPSNAP ||
req->r_op == CEPH_MDS_OP_MKSNAP)) {
} else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP ||
req->r_op == CEPH_MDS_OP_MKSNAP) &&
!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) {
struct dentry *dn = req->r_dentry;
struct inode *dir = req->r_locked_dir;
struct inode *dir = req->r_parent;
/* fill out a snapdir LOOKUPSNAP dentry */
BUG_ON(!dn);
@@ -1370,6 +1351,26 @@ retry_lookup:
goto done;
}
req->r_dentry = dn; /* may have spliced */
} else if (rinfo->head->is_dentry) {
struct ceph_vino *ptvino = NULL;
if ((le32_to_cpu(rinfo->diri.in->cap.caps) & CEPH_CAP_FILE_SHARED) ||
le32_to_cpu(rinfo->dlease->duration_ms)) {
dvino.ino = le64_to_cpu(rinfo->diri.in->ino);
dvino.snap = le64_to_cpu(rinfo->diri.in->snapid);
if (rinfo->head->is_target) {
tvino.ino = le64_to_cpu(rinfo->targeti.in->ino);
tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
ptvino = &tvino;
}
update_dentry_lease(req->r_dentry, rinfo->dlease,
session, req->r_request_started, ptvino,
&dvino);
} else {
dout("%s: no dentry lease or dir cap\n", __func__);
}
}
done:
dout("fill_trace done err=%d\n", err);
@@ -1478,7 +1479,7 @@ int ceph_readdir_prepopulate(struct ceph_mds_request *req,
u32 fpos_offset;
struct ceph_readdir_cache_control cache_ctl = {};
if (req->r_aborted)
if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags))
return readdir_prepopulate_inodes_only(req, session);
if (rinfo->hash_order && req->r_path2) {
@@ -1523,14 +1524,14 @@ int ceph_readdir_prepopulate(struct ceph_mds_request *req,
/* FIXME: release caps/leases if error occurs */
for (i = 0; i < rinfo->dir_nr; i++) {
struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i;
struct ceph_vino vino;
struct ceph_vino tvino, dvino;
dname.name = rde->name;
dname.len = rde->name_len;
dname.hash = full_name_hash(parent, dname.name, dname.len);
vino.ino = le64_to_cpu(rde->inode.in->ino);
vino.snap = le64_to_cpu(rde->inode.in->snapid);
tvino.ino = le64_to_cpu(rde->inode.in->ino);
tvino.snap = le64_to_cpu(rde->inode.in->snapid);
if (rinfo->hash_order) {
u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash,
@@ -1559,8 +1560,8 @@ retry_lookup:
goto out;
}
} else if (d_really_is_positive(dn) &&
(ceph_ino(d_inode(dn)) != vino.ino ||
ceph_snap(d_inode(dn)) != vino.snap)) {
(ceph_ino(d_inode(dn)) != tvino.ino ||
ceph_snap(d_inode(dn)) != tvino.snap)) {
dout(" dn %p points to wrong inode %p\n",
dn, d_inode(dn));
d_delete(dn);
@@ -1572,7 +1573,7 @@ retry_lookup:
if (d_really_is_positive(dn)) {
in = d_inode(dn);
} else {
in = ceph_get_inode(parent->d_sb, vino);
in = ceph_get_inode(parent->d_sb, tvino);
if (IS_ERR(in)) {
dout("new_inode badness\n");
d_drop(dn);
@@ -1617,8 +1618,9 @@ retry_lookup:
ceph_dentry(dn)->offset = rde->offset;
dvino = ceph_vino(d_inode(parent));
update_dentry_lease(dn, rde->lease, req->r_session,
req->r_request_started);
req->r_request_started, &tvino, &dvino);
if (err == 0 && skipped == 0 && cache_ctl.index >= 0) {
ret = fill_readdir_cache(d_inode(parent), dn,
@@ -1632,7 +1634,7 @@ next_item:
}
out:
if (err == 0 && skipped == 0) {
req->r_did_prepopulate = true;
set_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags);
req->r_readdir_cache_idx = cache_ctl.index;
}
ceph_readdir_cache_release(&cache_ctl);
@@ -1720,7 +1722,7 @@ static void ceph_invalidate_work(struct work_struct *work)
mutex_lock(&ci->i_truncate_mutex);
if (ACCESS_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
if (READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n",
inode, ceph_ino(inode));
mapping_set_error(inode->i_mapping, -EIO);

4
fs/ceph/ioctl.c
View File

@@ -25,7 +25,7 @@ static long ceph_ioctl_get_layout(struct file *file, void __user *arg)
l.stripe_count = ci->i_layout.stripe_count;
l.object_size = ci->i_layout.object_size;
l.data_pool = ci->i_layout.pool_id;
l.preferred_osd = (s32)-1;
l.preferred_osd = -1;
if (copy_to_user(arg, &l, sizeof(l)))
return -EFAULT;
}
@@ -97,7 +97,7 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
nl.data_pool = ci->i_layout.pool_id;
/* this is obsolete, and always -1 */
nl.preferred_osd = le64_to_cpu(-1);
nl.preferred_osd = -1;
err = __validate_layout(mdsc, &nl);
if (err)

175
fs/ceph/mds_client.c
View File

@@ -547,8 +547,8 @@ void ceph_mdsc_release_request(struct kref *kref)
ceph_put_cap_refs(ceph_inode(req->r_inode), CEPH_CAP_PIN);
iput(req->r_inode);
}
if (req->r_locked_dir)
ceph_put_cap_refs(ceph_inode(req->r_locked_dir), CEPH_CAP_PIN);
if (req->r_parent)
ceph_put_cap_refs(ceph_inode(req->r_parent), CEPH_CAP_PIN);
iput(req->r_target_inode);
if (req->r_dentry)
dput(req->r_dentry);
@@ -628,6 +628,9 @@ static void __unregister_request(struct ceph_mds_client *mdsc,
{
dout("__unregister_request %p tid %lld\n", req, req->r_tid);
/* Never leave an unregistered request on an unsafe list! */
list_del_init(&req->r_unsafe_item);
if (req->r_tid == mdsc->oldest_tid) {
struct rb_node *p = rb_next(&req->r_node);
mdsc->oldest_tid = 0;
@@ -644,13 +647,15 @@ static void __unregister_request(struct ceph_mds_client *mdsc,
erase_request(&mdsc->request_tree, req);
if (req->r_unsafe_dir && req->r_got_unsafe) {
if (req->r_unsafe_dir &&
test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags)) {
struct ceph_inode_info *ci = ceph_inode(req->r_unsafe_dir);
spin_lock(&ci->i_unsafe_lock);
list_del_init(&req->r_unsafe_dir_item);
spin_unlock(&ci->i_unsafe_lock);
}
if (req->r_target_inode && req->r_got_unsafe) {
if (req->r_target_inode &&
test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags)) {
struct ceph_inode_info *ci = ceph_inode(req->r_target_inode);
spin_lock(&ci->i_unsafe_lock);
list_del_init(&req->r_unsafe_target_item);
@@ -667,6 +672,28 @@ static void __unregister_request(struct ceph_mds_client *mdsc,
ceph_mdsc_put_request(req);
}
/*
* Walk back up the dentry tree until we hit a dentry representing a
* non-snapshot inode. We do this using the rcu_read_lock (which must be held
* when calling this) to ensure that the objects won't disappear while we're
* working with them. Once we hit a candidate dentry, we attempt to take a
* reference to it, and return that as the result.
*/
static struct inode *get_nonsnap_parent(struct dentry *dentry)
{
struct inode *inode = NULL;
while (dentry && !IS_ROOT(dentry)) {
inode = d_inode_rcu(dentry);
if (!inode || ceph_snap(inode) == CEPH_NOSNAP)
break;
dentry = dentry->d_parent;
}
if (inode)
inode = igrab(inode);
return inode;
}
/*
* Choose mds to send request to next. If there is a hint set in the
* request (e.g., due to a prior forward hint from the mds), use that.
@@ -675,19 +702,6 @@ static void __unregister_request(struct ceph_mds_client *mdsc,
*
* Called under mdsc->mutex.
*/
static struct dentry *get_nonsnap_parent(struct dentry *dentry)
{
/*
* we don't need to worry about protecting the d_parent access
* here because we never renaming inside the snapped namespace
* except to resplice to another snapdir, and either the old or new
* result is a valid result.
*/
while (!IS_ROOT(dentry) && ceph_snap(d_inode(dentry)) != CEPH_NOSNAP)
dentry = dentry->d_parent;
return dentry;
}
static int __choose_mds(struct ceph_mds_client *mdsc,
struct ceph_mds_request *req)
{
@@ -697,7 +711,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
int mode = req->r_direct_mode;
int mds = -1;
u32 hash = req->r_direct_hash;
bool is_hash = req->r_direct_is_hash;
bool is_hash = test_bit(CEPH_MDS_R_DIRECT_IS_HASH, &req->r_req_flags);
/*
* is there a specific mds we should try? ignore hint if we have
@@ -717,30 +731,39 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
inode = NULL;
if (req->r_inode) {
inode = req->r_inode;
ihold(inode);
} else if (req->r_dentry) {
/* ignore race with rename; old or new d_parent is okay */
struct dentry *parent = req->r_dentry->d_parent;
struct inode *dir = d_inode(parent);
struct dentry *parent;
struct inode *dir;
if (dir->i_sb != mdsc->fsc->sb) {
/* not this fs! */
rcu_read_lock();
parent = req->r_dentry->d_parent;
dir = req->r_parent ? : d_inode_rcu(parent);
if (!dir || dir->i_sb != mdsc->fsc->sb) {
/* not this fs or parent went negative */
inode = d_inode(req->r_dentry);
if (inode)
ihold(inode);
} else if (ceph_snap(dir) != CEPH_NOSNAP) {
/* direct snapped/virtual snapdir requests
* based on parent dir inode */
struct dentry *dn = get_nonsnap_parent(parent);
inode = d_inode(dn);
inode = get_nonsnap_parent(parent);
dout("__choose_mds using nonsnap parent %p\n", inode);
} else {
/* dentry target */
inode = d_inode(req->r_dentry);
if (!inode || mode == USE_AUTH_MDS) {
/* dir + name */
inode = dir;
inode = igrab(dir);
hash = ceph_dentry_hash(dir, req->r_dentry);
is_hash = true;
} else {
ihold(inode);
}
}
rcu_read_unlock();
}
dout("__choose_mds %p is_hash=%d (%d) mode %d\n", inode, (int)is_hash,
@@ -769,7 +792,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
(int)r, frag.ndist);
if (ceph_mdsmap_get_state(mdsc->mdsmap, mds) >=
CEPH_MDS_STATE_ACTIVE)
return mds;
goto out;
}
/* since this file/dir wasn't known to be
@@ -784,7 +807,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
inode, ceph_vinop(inode), frag.frag, mds);
if (ceph_mdsmap_get_state(mdsc->mdsmap, mds) >=
CEPH_MDS_STATE_ACTIVE)
return mds;
goto out;
}
}
}
@@ -797,6 +820,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
cap = rb_entry(rb_first(&ci->i_caps), struct ceph_cap, ci_node);
if (!cap) {
spin_unlock(&ci->i_ceph_lock);
iput(inode);
goto random;
}
mds = cap->session->s_mds;
@@ -804,6 +828,8 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
inode, ceph_vinop(inode), mds,
cap == ci->i_auth_cap ? "auth " : "", cap);
spin_unlock(&ci->i_ceph_lock);
out:
iput(inode);
return mds;
random:
@@ -1036,7 +1062,6 @@ static void cleanup_session_requests(struct ceph_mds_client *mdsc,
while (!list_empty(&session->s_unsafe)) {
req = list_first_entry(&session->s_unsafe,
struct ceph_mds_request, r_unsafe_item);
list_del_init(&req->r_unsafe_item);
pr_warn_ratelimited(" dropping unsafe request %llu\n",
req->r_tid);
__unregister_request(mdsc, req);
@@ -1146,7 +1171,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
ci->i_ceph_flags |= CEPH_I_CAP_DROPPED;
if (ci->i_wrbuffer_ref > 0 &&
ACCESS_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN)
READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN)
invalidate = true;
while (!list_empty(&ci->i_cap_flush_list)) {
@@ -1775,18 +1800,23 @@ retry:
return path;
}
static int build_dentry_path(struct dentry *dentry,
static int build_dentry_path(struct dentry *dentry, struct inode *dir,
const char **ppath, int *ppathlen, u64 *pino,
int *pfreepath)
{
char *path;
if (ceph_snap(d_inode(dentry->d_parent)) == CEPH_NOSNAP) {
*pino = ceph_ino(d_inode(dentry->d_parent));
rcu_read_lock();
if (!dir)
dir = d_inode_rcu(dentry->d_parent);
if (dir && ceph_snap(dir) == CEPH_NOSNAP) {
*pino = ceph_ino(dir);
rcu_read_unlock();
*ppath = dentry->d_name.name;
*ppathlen = dentry->d_name.len;
return 0;
}
rcu_read_unlock();
path = ceph_mdsc_build_path(dentry, ppathlen, pino, 1);
if (IS_ERR(path))
return PTR_ERR(path);
@@ -1822,8 +1852,8 @@ static int build_inode_path(struct inode *inode,
* an explicit ino+path.
*/
static int set_request_path_attr(struct inode *rinode, struct dentry *rdentry,
const char *rpath, u64 rino,
const char **ppath, int *pathlen,
struct inode *rdiri, const char *rpath,
u64 rino, const char **ppath, int *pathlen,
u64 *ino, int *freepath)
{
int r = 0;
@@ -1833,7 +1863,8 @@ static int set_request_path_attr(struct inode *rinode, struct dentry *rdentry,
dout(" inode %p %llx.%llx\n", rinode, ceph_ino(rinode),
ceph_snap(rinode));
} else if (rdentry) {
r = build_dentry_path(rdentry, ppath, pathlen, ino, freepath);
r = build_dentry_path(rdentry, rdiri, ppath, pathlen, ino,
freepath);
dout(" dentry %p %llx/%.*s\n", rdentry, *ino, *pathlen,
*ppath);
} else if (rpath || rino) {
@@ -1866,7 +1897,7 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
int ret;
ret = set_request_path_attr(req->r_inode, req->r_dentry,
req->r_path1, req->r_ino1.ino,
req->r_parent, req->r_path1, req->r_ino1.ino,
&path1, &pathlen1, &ino1, &freepath1);
if (ret < 0) {
msg = ERR_PTR(ret);
@@ -1874,6 +1905,7 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
}
ret = set_request_path_attr(NULL, req->r_old_dentry,
req->r_old_dentry_dir,
req->r_path2, req->r_ino2.ino,
&path2, &pathlen2, &ino2, &freepath2);
if (ret < 0) {
@@ -1927,10 +1959,13 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
mds, req->r_inode_drop, req->r_inode_unless, 0);
if (req->r_dentry_drop)
releases += ceph_encode_dentry_release(&p, req->r_dentry,
mds, req->r_dentry_drop, req->r_dentry_unless);
req->r_parent, mds, req->r_dentry_drop,
req->r_dentry_unless);
if (req->r_old_dentry_drop)
releases += ceph_encode_dentry_release(&p, req->r_old_dentry,
mds, req->r_old_dentry_drop, req->r_old_dentry_unless);
req->r_old_dentry_dir, mds,
req->r_old_dentry_drop,
req->r_old_dentry_unless);
if (req->r_old_inode_drop)
releases += ceph_encode_inode_release(&p,
d_inode(req->r_old_dentry),
@@ -2012,7 +2047,7 @@ static int __prepare_send_request(struct ceph_mds_client *mdsc,
dout("prepare_send_request %p tid %lld %s (attempt %d)\n", req,
req->r_tid, ceph_mds_op_name(req->r_op), req->r_attempts);
if (req->r_got_unsafe) {
if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags)) {
void *p;
/*
* Replay. Do not regenerate message (and rebuild
@@ -2061,16 +2096,16 @@ static int __prepare_send_request(struct ceph_mds_client *mdsc,
rhead = msg->front.iov_base;
rhead->oldest_client_tid = cpu_to_le64(__get_oldest_tid(mdsc));
if (req->r_got_unsafe)
if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
flags |= CEPH_MDS_FLAG_REPLAY;
if (req->r_locked_dir)
if (req->r_parent)
flags |= CEPH_MDS_FLAG_WANT_DENTRY;
rhead->flags = cpu_to_le32(flags);
rhead->num_fwd = req->r_num_fwd;
rhead->num_retry = req->r_attempts - 1;
rhead->ino = 0;
dout(" r_locked_dir = %p\n", req->r_locked_dir);
dout(" r_parent = %p\n", req->r_parent);
return 0;
}
@@ -2084,8 +2119,8 @@ static int __do_request(struct ceph_mds_client *mdsc,
int mds = -1;
int err = 0;
if (req->r_err || req->r_got_result) {
if (req->r_aborted)
if (req->r_err || test_bit(CEPH_MDS_R_GOT_RESULT, &req->r_req_flags)) {
if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags))
__unregister_request(mdsc, req);
goto out;
}
@@ -2096,12 +2131,12 @@ static int __do_request(struct ceph_mds_client *mdsc,
err = -EIO;
goto finish;
}
if (ACCESS_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
if (READ_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
dout("do_request forced umount\n");
err = -EIO;
goto finish;
}
if (ACCESS_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_MOUNTING) {
if (READ_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_MOUNTING) {
if (mdsc->mdsmap_err) {
err = mdsc->mdsmap_err;
dout("do_request mdsmap err %d\n", err);
@@ -2215,7 +2250,7 @@ static void kick_requests(struct ceph_mds_client *mdsc, int mds)
while (p) {
req = rb_entry(p, struct ceph_mds_request, r_node);
p = rb_next(p);
if (req->r_got_unsafe)
if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
continue;
if (req->r_attempts > 0)
continue; /* only new requests */
@@ -2250,11 +2285,11 @@ int ceph_mdsc_do_request(struct ceph_mds_client *mdsc,
dout("do_request on %p\n", req);
/* take CAP_PIN refs for r_inode, r_locked_dir, r_old_dentry */
/* take CAP_PIN refs for r_inode, r_parent, r_old_dentry */
if (req->r_inode)
ceph_get_cap_refs(ceph_inode(req->r_inode), CEPH_CAP_PIN);
if (req->r_locked_dir)
ceph_get_cap_refs(ceph_inode(req->r_locked_dir), CEPH_CAP_PIN);
if (req->r_parent)
ceph_get_cap_refs(ceph_inode(req->r_parent), CEPH_CAP_PIN);
if (req->r_old_dentry_dir)
ceph_get_cap_refs(ceph_inode(req->r_old_dentry_dir),
CEPH_CAP_PIN);
@@ -2289,7 +2324,7 @@ int ceph_mdsc_do_request(struct ceph_mds_client *mdsc,
mutex_lock(&mdsc->mutex);
/* only abort if we didn't race with a real reply */
if (req->r_got_result) {
if (test_bit(CEPH_MDS_R_GOT_RESULT, &req->r_req_flags)) {
err = le32_to_cpu(req->r_reply_info.head->result);
} else if (err < 0) {
dout("aborted request %lld with %d\n", req->r_tid, err);
@@ -2301,10 +2336,10 @@ int ceph_mdsc_do_request(struct ceph_mds_client *mdsc,
*/
mutex_lock(&req->r_fill_mutex);
req->r_err = err;
req->r_aborted = true;
set_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags);
mutex_unlock(&req->r_fill_mutex);
if (req->r_locked_dir &&
if (req->r_parent &&
(req->r_op & CEPH_MDS_OP_WRITE))
ceph_invalidate_dir_request(req);
} else {
@@ -2323,7 +2358,7 @@ out:
*/
void ceph_invalidate_dir_request(struct ceph_mds_request *req)
{
struct inode *inode = req->r_locked_dir;
struct inode *inode = req->r_parent;
dout("invalidate_dir_request %p (complete, lease(s))\n", inode);
@@ -2379,14 +2414,14 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
}
/* dup? */
if ((req->r_got_unsafe && !head->safe) ||
(req->r_got_safe && head->safe)) {
if ((test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags) && !head->safe) ||
(test_bit(CEPH_MDS_R_GOT_SAFE, &req->r_req_flags) && head->safe)) {
pr_warn("got a dup %s reply on %llu from mds%d\n",
head->safe ? "safe" : "unsafe", tid, mds);
mutex_unlock(&mdsc->mutex);
goto out;
}
if (req->r_got_safe) {
if (test_bit(CEPH_MDS_R_GOT_SAFE, &req->r_req_flags)) {
pr_warn("got unsafe after safe on %llu from mds%d\n",
tid, mds);
mutex_unlock(&mdsc->mutex);
@@ -2425,10 +2460,10 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
if (head->safe) {
req->r_got_safe = true;
set_bit(CEPH_MDS_R_GOT_SAFE, &req->r_req_flags);
__unregister_request(mdsc, req);
if (req->r_got_unsafe) {
if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags)) {
/*
* We already handled the unsafe response, now do the
* cleanup. No need to examine the response; the MDS
@@ -2437,7 +2472,6 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
* useful we could do with a revised return value.
*/
dout("got safe reply %llu, mds%d\n", tid, mds);
list_del_init(&req->r_unsafe_item);
/* last unsafe request during umount? */
if (mdsc->stopping && !__get_oldest_req(mdsc))
@@ -2446,7 +2480,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
goto out;
}
} else {
req->r_got_unsafe = true;
set_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags);
list_add_tail(&req->r_unsafe_item, &req->r_session->s_unsafe);
if (req->r_unsafe_dir) {
struct ceph_inode_info *ci =
@@ -2486,7 +2520,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
/* insert trace into our cache */
mutex_lock(&req->r_fill_mutex);
current->journal_info = req;
err = ceph_fill_trace(mdsc->fsc->sb, req, req->r_session);
err = ceph_fill_trace(mdsc->fsc->sb, req);
if (err == 0) {
if (result == 0 && (req->r_op == CEPH_MDS_OP_READDIR ||
req->r_op == CEPH_MDS_OP_LSSNAP))
@@ -2500,7 +2534,8 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
if (realm)
ceph_put_snap_realm(mdsc, realm);
if (err == 0 && req->r_got_unsafe && req->r_target_inode) {
if (err == 0 && req->r_target_inode &&
test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags)) {
struct ceph_inode_info *ci = ceph_inode(req->r_target_inode);
spin_lock(&ci->i_unsafe_lock);
list_add_tail(&req->r_unsafe_target_item, &ci->i_unsafe_iops);
@@ -2508,12 +2543,12 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
}
out_err:
mutex_lock(&mdsc->mutex);
if (!req->r_aborted) {
if (!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) {
if (err) {
req->r_err = err;
} else {
req->r_reply = ceph_msg_get(msg);
req->r_got_result = true;
set_bit(CEPH_MDS_R_GOT_RESULT, &req->r_req_flags);
}
} else {
dout("reply arrived after request %lld was aborted\n", tid);
@@ -2557,7 +2592,7 @@ static void handle_forward(struct ceph_mds_client *mdsc,
goto out; /* dup reply? */
}
if (req->r_aborted) {
if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) {
dout("forward tid %llu aborted, unregistering\n", tid);
__unregister_request(mdsc, req);
} else if (fwd_seq <= req->r_num_fwd) {
@@ -2567,7 +2602,7 @@ static void handle_forward(struct ceph_mds_client *mdsc,
/* resend. forward race not possible; mds would drop */
dout("forward tid %llu to mds%d (we resend)\n", tid, next_mds);
BUG_ON(req->r_err);
BUG_ON(req->r_got_result);
BUG_ON(test_bit(CEPH_MDS_R_GOT_RESULT, &req->r_req_flags));
req->r_attempts = 0;
req->r_num_fwd = fwd_seq;
req->r_resend_mds = next_mds;
@@ -2732,7 +2767,7 @@ static void replay_unsafe_requests(struct ceph_mds_client *mdsc,
while (p) {
req = rb_entry(p, struct ceph_mds_request, r_node);
p = rb_next(p);
if (req->r_got_unsafe)
if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
continue;
if (req->r_attempts == 0)
continue; /* only old requests */
@@ -3556,7 +3591,7 @@ void ceph_mdsc_sync(struct ceph_mds_client *mdsc)
{
u64 want_tid, want_flush;
if (ACCESS_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_SHUTDOWN)
if (READ_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_SHUTDOWN)
return;
dout("sync\n");
@@ -3587,7 +3622,7 @@ void ceph_mdsc_sync(struct ceph_mds_client *mdsc)
*/
static bool done_closing_sessions(struct ceph_mds_client *mdsc, int skipped)
{
if (ACCESS_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_SHUTDOWN)
if (READ_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_SHUTDOWN)
return true;
return atomic_read(&mdsc->num_sessions) <= skipped;
}

15
fs/ceph/mds_client.h
View File

@@ -202,9 +202,18 @@ struct ceph_mds_request {
char *r_path1, *r_path2;
struct ceph_vino r_ino1, r_ino2;
struct inode *r_locked_dir; /* dir (if any) i_mutex locked by vfs */
struct inode *r_parent; /* parent dir inode */
struct inode *r_target_inode; /* resulting inode */
#define CEPH_MDS_R_DIRECT_IS_HASH (1) /* r_direct_hash is valid */
#define CEPH_MDS_R_ABORTED (2) /* call was aborted */
#define CEPH_MDS_R_GOT_UNSAFE (3) /* got an unsafe reply */
#define CEPH_MDS_R_GOT_SAFE (4) /* got a safe reply */
#define CEPH_MDS_R_GOT_RESULT (5) /* got a result */
#define CEPH_MDS_R_DID_PREPOPULATE (6) /* prepopulated readdir */
#define CEPH_MDS_R_PARENT_LOCKED (7) /* is r_parent->i_rwsem wlocked? */
unsigned long r_req_flags;
struct mutex r_fill_mutex;
union ceph_mds_request_args r_args;
@@ -216,7 +225,6 @@ struct ceph_mds_request {
/* for choosing which mds to send this request to */
int r_direct_mode;
u32 r_direct_hash; /* choose dir frag based on this dentry hash */
bool r_direct_is_hash; /* true if r_direct_hash is valid */
/* data payload is used for xattr ops */
struct ceph_pagelist *r_pagelist;
@@ -234,7 +242,6 @@ struct ceph_mds_request {
struct ceph_mds_reply_info_parsed r_reply_info;
struct page *r_locked_page;
int r_err;
bool r_aborted;
unsigned long r_timeout; /* optional. jiffies, 0 is "wait forever" */
unsigned long r_started; /* start time to measure timeout against */
@@ -262,9 +269,7 @@ struct ceph_mds_request {
ceph_mds_request_callback_t r_callback;
ceph_mds_request_wait_callback_t r_wait_for_completion;
struct list_head r_unsafe_item; /* per-session unsafe list item */
bool r_got_unsafe, r_got_safe, r_got_result;
bool r_did_prepopulate;
long long r_dir_release_cnt;
long long r_dir_ordered_cnt;
int r_readdir_cache_idx;

9
fs/ceph/super.c
View File

@@ -757,7 +757,6 @@ static const struct super_operations ceph_super_ops = {
.destroy_inode = ceph_destroy_inode,
.write_inode = ceph_write_inode,
.drop_inode = ceph_drop_inode,
.evict_inode = ceph_evict_inode,
.sync_fs = ceph_sync_fs,
.put_super = ceph_put_super,
.show_options = ceph_show_options,
@@ -952,6 +951,14 @@ static int ceph_register_bdi(struct super_block *sb,
fsc->backing_dev_info.ra_pages =
VM_MAX_READAHEAD * 1024 / PAGE_SIZE;
if (fsc->mount_options->rsize > fsc->mount_options->rasize &&
fsc->mount_options->rsize >= PAGE_SIZE)
fsc->backing_dev_info.io_pages =
(fsc->mount_options->rsize + PAGE_SIZE - 1)
>> PAGE_SHIFT;
else if (fsc->mount_options->rsize == 0)
fsc->backing_dev_info.io_pages = ULONG_MAX;
err = bdi_register(&fsc->backing_dev_info, NULL, "ceph-%ld",
atomic_long_inc_return(&bdi_seq));
if (!err)

14
fs/ceph/super.h
View File

@@ -45,8 +45,8 @@
#define ceph_test_mount_opt(fsc, opt) \
(!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))
#define CEPH_RSIZE_DEFAULT 0 /* max read size */
#define CEPH_RASIZE_DEFAULT (8192*1024) /* readahead */
#define CEPH_RSIZE_DEFAULT (64*1024*1024) /* max read size */
#define CEPH_RASIZE_DEFAULT (8192*1024) /* max readahead */
#define CEPH_MAX_READDIR_DEFAULT 1024
#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024)
#define CEPH_SNAPDIRNAME_DEFAULT ".snap"
@@ -343,7 +343,6 @@ struct ceph_inode_info {
u32 i_rdcache_gen; /* incremented each time we get FILE_CACHE. */
u32 i_rdcache_revoking; /* RDCACHE gen to async invalidate, if any */
struct list_head i_unsafe_writes; /* uncommitted sync writes */
struct list_head i_unsafe_dirops; /* uncommitted mds dir ops */
struct list_head i_unsafe_iops; /* uncommitted mds inode ops */
spinlock_t i_unsafe_lock;
@@ -602,7 +601,7 @@ static inline int __ceph_caps_wanted(struct ceph_inode_info *ci)
}
/* what the mds thinks we want */
extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci);
extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check);
extern void ceph_caps_init(struct ceph_mds_client *mdsc);
extern void ceph_caps_finalize(struct ceph_mds_client *mdsc);
@@ -753,7 +752,6 @@ extern const struct inode_operations ceph_file_iops;
extern struct inode *ceph_alloc_inode(struct super_block *sb);
extern void ceph_destroy_inode(struct inode *inode);
extern int ceph_drop_inode(struct inode *inode);
extern void ceph_evict_inode(struct inode *inode);
extern struct inode *ceph_get_inode(struct super_block *sb,
struct ceph_vino vino);
@@ -764,8 +762,7 @@ extern void ceph_fill_file_time(struct inode *inode, int issued,
u64 time_warp_seq, struct timespec *ctime,
struct timespec *mtime, struct timespec *atime);
extern int ceph_fill_trace(struct super_block *sb,
struct ceph_mds_request *req,
struct ceph_mds_session *session);
struct ceph_mds_request *req);
extern int ceph_readdir_prepopulate(struct ceph_mds_request *req,
struct ceph_mds_session *session);
@@ -904,6 +901,7 @@ extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc);
extern int ceph_encode_inode_release(void **p, struct inode *inode,
int mds, int drop, int unless, int force);
extern int ceph_encode_dentry_release(void **p, struct dentry *dn,
struct inode *dir,
int mds, int drop, int unless);
extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
@@ -933,7 +931,7 @@ extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
extern int ceph_release(struct inode *inode, struct file *filp);
extern void ceph_fill_inline_data(struct inode *inode, struct page *locked_page,
char *data, size_t len);
extern void ceph_sync_write_wait(struct inode *inode);
/* dir.c */
extern const struct file_operations ceph_dir_fops;
extern const struct file_operations ceph_snapdir_fops;

6
include/linux/ceph/osd_client.h
View File

@@ -22,7 +22,6 @@ struct ceph_osd_client;
* completion callback for async writepages
*/
typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *);
typedef void (*ceph_osdc_unsafe_callback_t)(struct ceph_osd_request *, bool);
#define CEPH_HOMELESS_OSD -1
@@ -170,15 +169,12 @@ struct ceph_osd_request {
unsigned int r_num_ops;
int r_result;
bool r_got_reply;
struct ceph_osd_client *r_osdc;
struct kref r_kref;
bool r_mempool;
struct completion r_completion;
struct completion r_done_completion; /* fsync waiter */
struct completion r_completion; /* private to osd_client.c */
ceph_osdc_callback_t r_callback;
ceph_osdc_unsafe_callback_t r_unsafe_callback;
struct list_head r_unsafe_item;
struct inode *r_inode; /* for use by callbacks */

13
include/linux/ceph/osdmap.h
View File

@@ -57,7 +57,7 @@ static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool)
case CEPH_POOL_TYPE_EC:
return false;
default:
BUG_ON(1);
BUG();
}
}
@@ -81,13 +81,6 @@ void ceph_oloc_copy(struct ceph_object_locator *dest,
const struct ceph_object_locator *src);
void ceph_oloc_destroy(struct ceph_object_locator *oloc);
/*
* Maximum supported by kernel client object name length
*
* (probably outdated: must be >= RBD_MAX_MD_NAME_LEN -- currently 100)
*/
#define CEPH_MAX_OID_NAME_LEN 100
/*
* 51-char inline_name is long enough for all cephfs and all but one
* rbd requests: <imgname> in "<imgname>.rbd"/"rbd_id.<imgname>" can be
@@ -173,8 +166,8 @@ struct ceph_osdmap {
* the list of osds that store+replicate them. */
struct crush_map *crush;
struct mutex crush_scratch_mutex;
int crush_scratch_ary[CEPH_PG_MAX_SIZE * 3];
struct mutex crush_workspace_mutex;
void *crush_workspace;
};
static inline bool ceph_osd_exists(struct ceph_osdmap *map, int osd)

2
include/linux/ceph/rados.h
View File

@@ -50,7 +50,7 @@ struct ceph_timespec {
#define CEPH_PG_LAYOUT_LINEAR 2
#define CEPH_PG_LAYOUT_HYBRID 3
#define CEPH_PG_MAX_SIZE 16 /* max # osds in a single pg */
#define CEPH_PG_MAX_SIZE 32 /* max # osds in a single pg */
/*
* placement group.

41
include/linux/crush/crush.h
View File

@@ -135,13 +135,6 @@ struct crush_bucket {
__u32 size; /* num items */
__s32 *items;
/*
* cached random permutation: used for uniform bucket and for
* the linear search fallback for the other bucket types.
*/
__u32 perm_x; /* @x for which *perm is defined */
__u32 perm_n; /* num elements of *perm that are permuted/defined */
__u32 *perm;
};
struct crush_bucket_uniform {
@@ -211,6 +204,21 @@ struct crush_map {
* device fails. */
__u8 chooseleaf_stable;
/*
* This value is calculated after decode or construction by
* the builder. It is exposed here (rather than having a
* 'build CRUSH working space' function) so that callers can
* reserve a static buffer, allocate space on the stack, or
* otherwise avoid calling into the heap allocator if they
* want to. The size of the working space depends on the map,
* while the size of the scratch vector passed to the mapper
* depends on the size of the desired result set.
*
* Nothing stops the caller from allocating both in one swell
* foop and passing in two points, though.
*/
size_t working_size;
#ifndef __KERNEL__
/*
* version 0 (original) of straw_calc has various flaws. version 1
@@ -248,4 +256,23 @@ static inline int crush_calc_tree_node(int i)
return ((i+1) << 1)-1;
}
/*
* These data structures are private to the CRUSH implementation. They
* are exposed in this header file because builder needs their
* definitions to calculate the total working size.
*
* Moving this out of the crush map allow us to treat the CRUSH map as
* immutable within the mapper and removes the requirement for a CRUSH
* map lock.
*/
struct crush_work_bucket {
__u32 perm_x; /* @x for which *perm is defined */
__u32 perm_n; /* num elements of *perm that are permuted/defined */
__u32 *perm; /* Permutation of the bucket's items */
};
struct crush_work {
struct crush_work_bucket **work; /* Per-bucket working store */
};
#endif

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