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-rw-r--r--fs/ceph/super.c82
1 files changed, 55 insertions, 27 deletions
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index c973043deb0e..e247f6f0feb7 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -120,6 +120,7 @@ enum {
Opt_last_int,
/* int args above */
Opt_snapdirname,
+ Opt_mds_namespace,
Opt_last_string,
/* string args above */
Opt_dirstat,
@@ -154,6 +155,7 @@ static match_table_t fsopt_tokens = {
{Opt_congestion_kb, "write_congestion_kb=%d"},
/* int args above */
{Opt_snapdirname, "snapdirname=%s"},
+ {Opt_mds_namespace, "mds_namespace=%s"},
/* string args above */
{Opt_dirstat, "dirstat"},
{Opt_nodirstat, "nodirstat"},
@@ -210,7 +212,13 @@ static int parse_fsopt_token(char *c, void *private)
if (!fsopt->snapdir_name)
return -ENOMEM;
break;
-
+ case Opt_mds_namespace:
+ fsopt->mds_namespace = kstrndup(argstr[0].from,
+ argstr[0].to-argstr[0].from,
+ GFP_KERNEL);
+ if (!fsopt->mds_namespace)
+ return -ENOMEM;
+ break;
/* misc */
case Opt_wsize:
fsopt->wsize = intval;
@@ -297,6 +305,8 @@ static void destroy_mount_options(struct ceph_mount_options *args)
{
dout("destroy_mount_options %p\n", args);
kfree(args->snapdir_name);
+ kfree(args->mds_namespace);
+ kfree(args->server_path);
kfree(args);
}
@@ -327,6 +337,13 @@ static int compare_mount_options(struct ceph_mount_options *new_fsopt,
ret = strcmp_null(fsopt1->snapdir_name, fsopt2->snapdir_name);
if (ret)
return ret;
+ ret = strcmp_null(fsopt1->mds_namespace, fsopt2->mds_namespace);
+ if (ret)
+ return ret;
+
+ ret = strcmp_null(fsopt1->server_path, fsopt2->server_path);
+ if (ret)
+ return ret;
return ceph_compare_options(new_opt, fsc->client);
}
@@ -334,8 +351,7 @@ static int compare_mount_options(struct ceph_mount_options *new_fsopt,
static int parse_mount_options(struct ceph_mount_options **pfsopt,
struct ceph_options **popt,
int flags, char *options,
- const char *dev_name,
- const char **path)
+ const char *dev_name)
{
struct ceph_mount_options *fsopt;
const char *dev_name_end;
@@ -380,12 +396,13 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
*/
dev_name_end = strchr(dev_name, '/');
if (dev_name_end) {
- /* skip over leading '/' for path */
- *path = dev_name_end + 1;
+ fsopt->server_path = kstrdup(dev_name_end, GFP_KERNEL);
+ if (!fsopt->server_path) {
+ err = -ENOMEM;
+ goto out;
+ }
} else {
- /* path is empty */
dev_name_end = dev_name + strlen(dev_name);
- *path = dev_name_end;
}
err = -EINVAL;
dev_name_end--; /* back up to ':' separator */
@@ -395,7 +412,8 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
goto out;
}
dout("device name '%.*s'\n", (int)(dev_name_end - dev_name), dev_name);
- dout("server path '%s'\n", *path);
+ if (fsopt->server_path)
+ dout("server path '%s'\n", fsopt->server_path);
*popt = ceph_parse_options(options, dev_name, dev_name_end,
parse_fsopt_token, (void *)fsopt);
@@ -457,6 +475,8 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
seq_puts(m, ",noacl");
#endif
+ if (fsopt->mds_namespace)
+ seq_printf(m, ",mds_namespace=%s", fsopt->mds_namespace);
if (fsopt->wsize)
seq_printf(m, ",wsize=%d", fsopt->wsize);
if (fsopt->rsize != CEPH_RSIZE_DEFAULT)
@@ -495,9 +515,11 @@ static int extra_mon_dispatch(struct ceph_client *client, struct ceph_msg *msg)
switch (type) {
case CEPH_MSG_MDS_MAP:
- ceph_mdsc_handle_map(fsc->mdsc, msg);
+ ceph_mdsc_handle_mdsmap(fsc->mdsc, msg);
+ return 0;
+ case CEPH_MSG_FS_MAP_USER:
+ ceph_mdsc_handle_fsmap(fsc->mdsc, msg);
return 0;
-
default:
return -1;
}
@@ -511,9 +533,8 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
{
struct ceph_fs_client *fsc;
const u64 supported_features =
- CEPH_FEATURE_FLOCK |
- CEPH_FEATURE_DIRLAYOUTHASH |
- CEPH_FEATURE_MDS_INLINE_DATA;
+ CEPH_FEATURE_FLOCK | CEPH_FEATURE_DIRLAYOUTHASH |
+ CEPH_FEATURE_MDSENC | CEPH_FEATURE_MDS_INLINE_DATA;
const u64 required_features = 0;
int page_count;
size_t size;
@@ -530,7 +551,14 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
goto fail;
}
fsc->client->extra_mon_dispatch = extra_mon_dispatch;
- ceph_monc_want_map(&fsc->client->monc, CEPH_SUB_MDSMAP, 0, true);
+
+ if (fsopt->mds_namespace == NULL) {
+ ceph_monc_want_map(&fsc->client->monc, CEPH_SUB_MDSMAP,
+ 0, true);
+ } else {
+ ceph_monc_want_map(&fsc->client->monc, CEPH_SUB_FSMAP,
+ 0, false);
+ }
fsc->mount_options = fsopt;
@@ -560,7 +588,7 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
/* set up mempools */
err = -ENOMEM;
- page_count = fsc->mount_options->wsize >> PAGE_CACHE_SHIFT;
+ page_count = fsc->mount_options->wsize >> PAGE_SHIFT;
size = sizeof (struct page *) * (page_count ? page_count : 1);
fsc->wb_pagevec_pool = mempool_create_kmalloc_pool(10, size);
if (!fsc->wb_pagevec_pool)
@@ -658,8 +686,8 @@ static int __init init_caches(void)
if (ceph_dentry_cachep == NULL)
goto bad_dentry;
- ceph_file_cachep = KMEM_CACHE(ceph_file_info,
- SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD);
+ ceph_file_cachep = KMEM_CACHE(ceph_file_info, SLAB_MEM_SPREAD);
+
if (ceph_file_cachep == NULL)
goto bad_file;
@@ -717,6 +745,7 @@ 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,
@@ -785,8 +814,7 @@ out:
/*
* mount: join the ceph cluster, and open root directory.
*/
-static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc,
- const char *path)
+static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc)
{
int err;
unsigned long started = jiffies; /* note the start time */
@@ -815,11 +843,12 @@ static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc,
goto fail;
}
- if (path[0] == 0) {
+ if (!fsc->mount_options->server_path) {
root = fsc->sb->s_root;
dget(root);
} else {
- dout("mount opening base mountpoint\n");
+ const char *path = fsc->mount_options->server_path + 1;
+ dout("mount opening path %s\n", path);
root = open_root_dentry(fsc, path, started);
if (IS_ERR(root)) {
err = PTR_ERR(root);
@@ -912,13 +941,13 @@ static int ceph_register_bdi(struct super_block *sb,
int err;
/* set ra_pages based on rasize mount option? */
- if (fsc->mount_options->rasize >= PAGE_CACHE_SIZE)
+ if (fsc->mount_options->rasize >= PAGE_SIZE)
fsc->backing_dev_info.ra_pages =
- (fsc->mount_options->rasize + PAGE_CACHE_SIZE - 1)
+ (fsc->mount_options->rasize + PAGE_SIZE - 1)
>> PAGE_SHIFT;
else
fsc->backing_dev_info.ra_pages =
- VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE;
+ VM_MAX_READAHEAD * 1024 / PAGE_SIZE;
err = bdi_register(&fsc->backing_dev_info, NULL, "ceph-%ld",
atomic_long_inc_return(&bdi_seq));
@@ -935,7 +964,6 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type,
struct dentry *res;
int err;
int (*compare_super)(struct super_block *, void *) = ceph_compare_super;
- const char *path = NULL;
struct ceph_mount_options *fsopt = NULL;
struct ceph_options *opt = NULL;
@@ -944,7 +972,7 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type,
#ifdef CONFIG_CEPH_FS_POSIX_ACL
flags |= MS_POSIXACL;
#endif
- err = parse_mount_options(&fsopt, &opt, flags, data, dev_name, &path);
+ err = parse_mount_options(&fsopt, &opt, flags, data, dev_name);
if (err < 0) {
res = ERR_PTR(err);
goto out_final;
@@ -987,7 +1015,7 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type,
}
}
- res = ceph_real_mount(fsc, path);
+ res = ceph_real_mount(fsc);
if (IS_ERR(res))
goto out_splat;
dout("root %p inode %p ino %llx.%llx\n", res,
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-06 10:58:43 +0100