-#include "ceph_debug.h"
+#include <linux/ceph/ceph_debug.h>
#include <linux/backing-dev.h>
+#include <linux/ctype.h>
#include <linux/fs.h>
#include <linux/inet.h>
#include <linux/in6.h>
#include <linux/module.h>
#include <linux/mount.h>
#include <linux/parser.h>
-#include <linux/rwsem.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
+#include <linux/slab.h>
#include <linux/statfs.h>
#include <linux/string.h>
-#include <linux/version.h>
-#include <linux/vmalloc.h>
-#include "decode.h"
#include "super.h"
-#include "mon_client.h"
-#include "auth.h"
+#include "mds_client.h"
+
+#include <linux/ceph/decode.h>
+#include <linux/ceph/mon_client.h>
+#include <linux/ceph/auth.h>
+#include <linux/ceph/debugfs.h>
/*
* Ceph superblock operations
* Handle the basics of mounting, unmounting.
*/
-
-/*
- * find filename portion of a path (/foo/bar/baz -> baz)
- */
-const char *ceph_file_part(const char *s, int len)
-{
- const char *e = s + len;
-
- while (e != s && *(e-1) != '/')
- e--;
- return e;
-}
-
-
/*
* super ops
*/
static void ceph_put_super(struct super_block *s)
{
- struct ceph_client *cl = ceph_client(s);
+ struct ceph_fs_client *fsc = ceph_sb_to_client(s);
dout("put_super\n");
- ceph_mdsc_close_sessions(&cl->mdsc);
+ ceph_mdsc_close_sessions(fsc->mdsc);
+
+ /*
+ * ensure we release the bdi before put_anon_super releases
+ * the device name.
+ */
+ if (s->s_bdi == &fsc->backing_dev_info) {
+ bdi_unregister(&fsc->backing_dev_info);
+ s->s_bdi = NULL;
+ }
+
return;
}
static int ceph_statfs(struct dentry *dentry, struct kstatfs *buf)
{
- struct ceph_client *client = ceph_inode_to_client(dentry->d_inode);
- struct ceph_monmap *monmap = client->monc.monmap;
+ struct ceph_fs_client *fsc = ceph_inode_to_client(dentry->d_inode);
+ struct ceph_monmap *monmap = fsc->client->monc.monmap;
struct ceph_statfs st;
u64 fsid;
int err;
dout("statfs\n");
- err = ceph_monc_do_statfs(&client->monc, &st);
+ err = ceph_monc_do_statfs(&fsc->client->monc, &st);
if (err < 0)
return err;
*/
buf->f_bsize = 1 << CEPH_BLOCK_SHIFT;
buf->f_blocks = le64_to_cpu(st.kb) >> (CEPH_BLOCK_SHIFT-10);
- buf->f_bfree = (le64_to_cpu(st.kb) - le64_to_cpu(st.kb_used)) >>
- (CEPH_BLOCK_SHIFT-10);
+ buf->f_bfree = le64_to_cpu(st.kb_avail) >> (CEPH_BLOCK_SHIFT-10);
buf->f_bavail = le64_to_cpu(st.kb_avail) >> (CEPH_BLOCK_SHIFT-10);
buf->f_files = le64_to_cpu(st.num_objects);
buf->f_ffree = -1;
- buf->f_namelen = PATH_MAX;
+ buf->f_namelen = NAME_MAX;
buf->f_frsize = PAGE_CACHE_SIZE;
/* leave fsid little-endian, regardless of host endianness */
}
-static int ceph_syncfs(struct super_block *sb, int wait)
+static int ceph_sync_fs(struct super_block *sb, int wait)
{
- dout("sync_fs %d\n", wait);
- ceph_osdc_sync(&ceph_client(sb)->osdc);
- ceph_mdsc_sync(&ceph_client(sb)->mdsc);
- dout("sync_fs %d done\n", wait);
- return 0;
-}
+ struct ceph_fs_client *fsc = ceph_sb_to_client(sb);
+ if (!wait) {
+ dout("sync_fs (non-blocking)\n");
+ ceph_flush_dirty_caps(fsc->mdsc);
+ dout("sync_fs (non-blocking) done\n");
+ return 0;
+ }
-/**
- * ceph_show_options - Show mount options in /proc/mounts
- * @m: seq_file to write to
- * @mnt: mount descriptor
- */
-static int ceph_show_options(struct seq_file *m, struct vfsmount *mnt)
-{
- struct ceph_client *client = ceph_sb_to_client(mnt->mnt_sb);
- struct ceph_mount_args *args = client->mount_args;
-
- if (args->flags & CEPH_OPT_FSID)
- seq_printf(m, ",fsidmajor=%llu,fsidminor%llu",
- le64_to_cpu(*(__le64 *)&args->fsid.fsid[0]),
- le64_to_cpu(*(__le64 *)&args->fsid.fsid[8]));
- if (args->flags & CEPH_OPT_NOSHARE)
- seq_puts(m, ",noshare");
- if (args->flags & CEPH_OPT_DIRSTAT)
- seq_puts(m, ",dirstat");
- if ((args->flags & CEPH_OPT_RBYTES) == 0)
- seq_puts(m, ",norbytes");
- if (args->flags & CEPH_OPT_NOCRC)
- seq_puts(m, ",nocrc");
- if (args->flags & CEPH_OPT_NOASYNCREADDIR)
- seq_puts(m, ",noasyncreaddir");
- if (strcmp(args->snapdir_name, CEPH_SNAPDIRNAME_DEFAULT))
- seq_printf(m, ",snapdirname=%s", args->snapdir_name);
- if (args->name)
- seq_printf(m, ",name=%s", args->name);
- if (args->secret)
- seq_puts(m, ",secret=<hidden>");
+ dout("sync_fs (blocking)\n");
+ ceph_osdc_sync(&fsc->client->osdc);
+ ceph_mdsc_sync(fsc->mdsc);
+ dout("sync_fs (blocking) done\n");
return 0;
}
-/*
- * caches
- */
-struct kmem_cache *ceph_inode_cachep;
-struct kmem_cache *ceph_cap_cachep;
-struct kmem_cache *ceph_dentry_cachep;
-struct kmem_cache *ceph_file_cachep;
-
-static void ceph_inode_init_once(void *foo)
-{
- struct ceph_inode_info *ci = foo;
- inode_init_once(&ci->vfs_inode);
-}
-
-static int __init init_caches(void)
-{
- ceph_inode_cachep = kmem_cache_create("ceph_inode_info",
- sizeof(struct ceph_inode_info),
- __alignof__(struct ceph_inode_info),
- (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
- ceph_inode_init_once);
- if (ceph_inode_cachep == NULL)
- return -ENOMEM;
-
- ceph_cap_cachep = KMEM_CACHE(ceph_cap,
- SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD);
- if (ceph_cap_cachep == NULL)
- goto bad_cap;
-
- ceph_dentry_cachep = KMEM_CACHE(ceph_dentry_info,
- SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD);
- if (ceph_dentry_cachep == NULL)
- goto bad_dentry;
-
- ceph_file_cachep = KMEM_CACHE(ceph_file_info,
- SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD);
- if (ceph_file_cachep == NULL)
- goto bad_file;
-
- return 0;
-
-bad_file:
- kmem_cache_destroy(ceph_dentry_cachep);
-bad_dentry:
- kmem_cache_destroy(ceph_cap_cachep);
-bad_cap:
- kmem_cache_destroy(ceph_inode_cachep);
- return -ENOMEM;
-}
-
-static void destroy_caches(void)
-{
- kmem_cache_destroy(ceph_inode_cachep);
- kmem_cache_destroy(ceph_cap_cachep);
- kmem_cache_destroy(ceph_dentry_cachep);
- kmem_cache_destroy(ceph_file_cachep);
-}
-
-
-/*
- * ceph_umount_begin - initiate forced umount. Tear down down the
- * mount, skipping steps that may hang while waiting for server(s).
- */
-static void ceph_umount_begin(struct super_block *sb)
-{
- struct ceph_client *client = ceph_sb_to_client(sb);
-
- dout("ceph_umount_begin - starting forced umount\n");
- if (!client)
- return;
- client->mount_state = CEPH_MOUNT_SHUTDOWN;
- return;
-}
-
-static const struct super_operations ceph_super_ops = {
- .alloc_inode = ceph_alloc_inode,
- .destroy_inode = ceph_destroy_inode,
- .write_inode = ceph_write_inode,
- .sync_fs = ceph_syncfs,
- .put_super = ceph_put_super,
- .show_options = ceph_show_options,
- .statfs = ceph_statfs,
- .umount_begin = ceph_umount_begin,
-};
-
-
-const char *ceph_msg_type_name(int type)
-{
- switch (type) {
- case CEPH_MSG_SHUTDOWN: return "shutdown";
- case CEPH_MSG_PING: return "ping";
- case CEPH_MSG_AUTH: return "auth";
- case CEPH_MSG_AUTH_REPLY: return "auth_reply";
- case CEPH_MSG_MON_MAP: return "mon_map";
- case CEPH_MSG_MON_GET_MAP: return "mon_get_map";
- case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe";
- case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack";
- case CEPH_MSG_STATFS: return "statfs";
- case CEPH_MSG_STATFS_REPLY: return "statfs_reply";
- case CEPH_MSG_MDS_MAP: return "mds_map";
- case CEPH_MSG_CLIENT_SESSION: return "client_session";
- case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect";
- case CEPH_MSG_CLIENT_REQUEST: return "client_request";
- case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward";
- case CEPH_MSG_CLIENT_REPLY: return "client_reply";
- case CEPH_MSG_CLIENT_CAPS: return "client_caps";
- case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release";
- case CEPH_MSG_CLIENT_SNAP: return "client_snap";
- case CEPH_MSG_CLIENT_LEASE: return "client_lease";
- case CEPH_MSG_OSD_MAP: return "osd_map";
- case CEPH_MSG_OSD_OP: return "osd_op";
- case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
- default: return "unknown";
- }
-}
-
-
/*
* mount options
*/
enum {
- Opt_fsidmajor,
- Opt_fsidminor,
- Opt_monport,
Opt_wsize,
Opt_rsize,
- Opt_osdtimeout,
- Opt_mount_timeout,
+ Opt_rasize,
Opt_caps_wanted_delay_min,
Opt_caps_wanted_delay_max,
+ Opt_cap_release_safety,
Opt_readdir_max_entries,
+ Opt_readdir_max_bytes,
+ Opt_congestion_kb,
Opt_last_int,
/* int args above */
Opt_snapdirname,
- Opt_name,
- Opt_secret,
Opt_last_string,
/* string args above */
- Opt_ip,
- Opt_noshare,
Opt_dirstat,
Opt_nodirstat,
Opt_rbytes,
Opt_norbytes,
- Opt_nocrc,
+ Opt_asyncreaddir,
Opt_noasyncreaddir,
+ Opt_dcache,
+ Opt_nodcache,
+ Opt_ino32,
+ Opt_noino32,
};
-static match_table_t arg_tokens = {
- {Opt_fsidmajor, "fsidmajor=%ld"},
- {Opt_fsidminor, "fsidminor=%ld"},
- {Opt_monport, "monport=%d"},
+static match_table_t fsopt_tokens = {
{Opt_wsize, "wsize=%d"},
{Opt_rsize, "rsize=%d"},
- {Opt_osdtimeout, "osdtimeout=%d"},
- {Opt_mount_timeout, "mount_timeout=%d"},
+ {Opt_rasize, "rasize=%d"},
{Opt_caps_wanted_delay_min, "caps_wanted_delay_min=%d"},
{Opt_caps_wanted_delay_max, "caps_wanted_delay_max=%d"},
+ {Opt_cap_release_safety, "cap_release_safety=%d"},
{Opt_readdir_max_entries, "readdir_max_entries=%d"},
+ {Opt_readdir_max_bytes, "readdir_max_bytes=%d"},
+ {Opt_congestion_kb, "write_congestion_kb=%d"},
/* int args above */
{Opt_snapdirname, "snapdirname=%s"},
- {Opt_name, "name=%s"},
- {Opt_secret, "secret=%s"},
/* string args above */
- {Opt_ip, "ip=%s"},
- {Opt_noshare, "noshare"},
{Opt_dirstat, "dirstat"},
{Opt_nodirstat, "nodirstat"},
{Opt_rbytes, "rbytes"},
{Opt_norbytes, "norbytes"},
- {Opt_nocrc, "nocrc"},
+ {Opt_asyncreaddir, "asyncreaddir"},
{Opt_noasyncreaddir, "noasyncreaddir"},
+ {Opt_dcache, "dcache"},
+ {Opt_nodcache, "nodcache"},
+ {Opt_ino32, "ino32"},
+ {Opt_noino32, "noino32"},
{-1, NULL}
};
+static int parse_fsopt_token(char *c, void *private)
+{
+ struct ceph_mount_options *fsopt = private;
+ substring_t argstr[MAX_OPT_ARGS];
+ int token, intval, ret;
+
+ token = match_token((char *)c, fsopt_tokens, argstr);
+ if (token < 0)
+ return -EINVAL;
+
+ if (token < Opt_last_int) {
+ ret = match_int(&argstr[0], &intval);
+ if (ret < 0) {
+ pr_err("bad mount option arg (not int) "
+ "at '%s'\n", c);
+ return ret;
+ }
+ dout("got int token %d val %d\n", token, intval);
+ } else if (token > Opt_last_int && token < Opt_last_string) {
+ dout("got string token %d val %s\n", token,
+ argstr[0].from);
+ } else {
+ dout("got token %d\n", token);
+ }
+
+ switch (token) {
+ case Opt_snapdirname:
+ kfree(fsopt->snapdir_name);
+ fsopt->snapdir_name = kstrndup(argstr[0].from,
+ argstr[0].to-argstr[0].from,
+ GFP_KERNEL);
+ if (!fsopt->snapdir_name)
+ return -ENOMEM;
+ break;
+
+ /* misc */
+ case Opt_wsize:
+ fsopt->wsize = intval;
+ break;
+ case Opt_rsize:
+ fsopt->rsize = intval;
+ break;
+ case Opt_rasize:
+ fsopt->rasize = intval;
+ break;
+ case Opt_caps_wanted_delay_min:
+ fsopt->caps_wanted_delay_min = intval;
+ break;
+ case Opt_caps_wanted_delay_max:
+ fsopt->caps_wanted_delay_max = intval;
+ break;
+ case Opt_readdir_max_entries:
+ fsopt->max_readdir = intval;
+ break;
+ case Opt_readdir_max_bytes:
+ fsopt->max_readdir_bytes = intval;
+ break;
+ case Opt_congestion_kb:
+ fsopt->congestion_kb = intval;
+ break;
+ case Opt_dirstat:
+ fsopt->flags |= CEPH_MOUNT_OPT_DIRSTAT;
+ break;
+ case Opt_nodirstat:
+ fsopt->flags &= ~CEPH_MOUNT_OPT_DIRSTAT;
+ break;
+ case Opt_rbytes:
+ fsopt->flags |= CEPH_MOUNT_OPT_RBYTES;
+ break;
+ case Opt_norbytes:
+ fsopt->flags &= ~CEPH_MOUNT_OPT_RBYTES;
+ break;
+ case Opt_asyncreaddir:
+ fsopt->flags &= ~CEPH_MOUNT_OPT_NOASYNCREADDIR;
+ break;
+ case Opt_noasyncreaddir:
+ fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR;
+ break;
+ case Opt_dcache:
+ fsopt->flags |= CEPH_MOUNT_OPT_DCACHE;
+ break;
+ case Opt_nodcache:
+ fsopt->flags &= ~CEPH_MOUNT_OPT_DCACHE;
+ break;
+ case Opt_ino32:
+ fsopt->flags |= CEPH_MOUNT_OPT_INO32;
+ break;
+ case Opt_noino32:
+ fsopt->flags &= ~CEPH_MOUNT_OPT_INO32;
+ break;
+ default:
+ BUG_ON(token);
+ }
+ return 0;
+}
+
+static void destroy_mount_options(struct ceph_mount_options *args)
+{
+ dout("destroy_mount_options %p\n", args);
+ kfree(args->snapdir_name);
+ kfree(args);
+}
+
+static int strcmp_null(const char *s1, const char *s2)
+{
+ if (!s1 && !s2)
+ return 0;
+ if (s1 && !s2)
+ return -1;
+ if (!s1 && s2)
+ return 1;
+ return strcmp(s1, s2);
+}
-static struct ceph_mount_args *parse_mount_args(int flags, char *options,
- const char *dev_name,
- const char **path)
+static int compare_mount_options(struct ceph_mount_options *new_fsopt,
+ struct ceph_options *new_opt,
+ struct ceph_fs_client *fsc)
{
- struct ceph_mount_args *args;
- const char *c;
+ struct ceph_mount_options *fsopt1 = new_fsopt;
+ struct ceph_mount_options *fsopt2 = fsc->mount_options;
+ int ofs = offsetof(struct ceph_mount_options, snapdir_name);
+ int ret;
+
+ ret = memcmp(fsopt1, fsopt2, ofs);
+ if (ret)
+ return ret;
+
+ ret = strcmp_null(fsopt1->snapdir_name, fsopt2->snapdir_name);
+ if (ret)
+ return ret;
+
+ return ceph_compare_options(new_opt, fsc->client);
+}
+
+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)
+{
+ struct ceph_mount_options *fsopt;
+ const char *dev_name_end;
int err = -ENOMEM;
- substring_t argstr[MAX_OPT_ARGS];
- args = kzalloc(sizeof(*args), GFP_KERNEL);
- if (!args)
- return ERR_PTR(-ENOMEM);
- args->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*args->mon_addr),
- GFP_KERNEL);
- if (!args->mon_addr)
- goto out;
+ fsopt = kzalloc(sizeof(*fsopt), GFP_KERNEL);
+ if (!fsopt)
+ return -ENOMEM;
- dout("parse_mount_args %p, dev_name '%s'\n", args, dev_name);
+ dout("parse_mount_options %p, dev_name '%s'\n", fsopt, dev_name);
- /* start with defaults */
- args->sb_flags = flags;
- args->flags = CEPH_OPT_DEFAULT;
- args->osd_timeout = 5; /* seconds */
- args->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; /* seconds */
- args->caps_wanted_delay_min = CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT;
- args->caps_wanted_delay_max = CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT;
- args->rsize = CEPH_MOUNT_RSIZE_DEFAULT;
- args->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL);
- args->cap_release_safety = CEPH_CAPS_PER_RELEASE * 4;
- args->max_readdir = 1024;
+ fsopt->sb_flags = flags;
+ fsopt->flags = CEPH_MOUNT_OPT_DEFAULT;
+
+ fsopt->rsize = CEPH_RSIZE_DEFAULT;
+ fsopt->rasize = CEPH_RASIZE_DEFAULT;
+ fsopt->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL);
+ fsopt->caps_wanted_delay_min = CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT;
+ fsopt->caps_wanted_delay_max = CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT;
+ fsopt->cap_release_safety = CEPH_CAP_RELEASE_SAFETY_DEFAULT;
+ fsopt->max_readdir = CEPH_MAX_READDIR_DEFAULT;
+ fsopt->max_readdir_bytes = CEPH_MAX_READDIR_BYTES_DEFAULT;
+ fsopt->congestion_kb = default_congestion_kb();
/* ip1[:port1][,ip2[:port2]...]:/subdir/in/fs */
err = -EINVAL;
*path = strstr(dev_name, ":/");
if (*path == NULL) {
pr_err("device name is missing path (no :/ in %s)\n",
- dev_name);
+ dev_name);
goto out;
}
-
- /* get mon ip(s) */
- err = ceph_parse_ips(dev_name, *path, args->mon_addr,
- CEPH_MAX_MON, &args->num_mon);
- if (err < 0)
- goto out;
+ dev_name_end = *path;
+ dout("device name '%.*s'\n", (int)(dev_name_end - dev_name), dev_name);
/* path on server */
*path += 2;
dout("server path '%s'\n", *path);
- /* parse mount options */
- while ((c = strsep(&options, ",")) != NULL) {
- int token, intval, ret;
- if (!*c)
- continue;
- err = -EINVAL;
- token = match_token((char *)c, arg_tokens, argstr);
- if (token < 0) {
- pr_err("bad mount option at '%s'\n", c);
- goto out;
- }
- if (token < Opt_last_int) {
- ret = match_int(&argstr[0], &intval);
- if (ret < 0) {
- pr_err("bad mount option arg (not int) "
- "at '%s'\n", c);
- continue;
- }
- dout("got int token %d val %d\n", token, intval);
- } else if (token > Opt_last_int && token < Opt_last_string) {
- dout("got string token %d val %s\n", token,
- argstr[0].from);
- } else {
- dout("got token %d\n", token);
- }
- switch (token) {
- case Opt_fsidmajor:
- *(__le64 *)&args->fsid.fsid[0] = cpu_to_le64(intval);
- break;
- case Opt_fsidminor:
- *(__le64 *)&args->fsid.fsid[8] = cpu_to_le64(intval);
- break;
- case Opt_ip:
- err = ceph_parse_ips(argstr[0].from,
- argstr[0].to,
- &args->my_addr,
- 1, NULL);
- if (err < 0)
- goto out;
- args->flags |= CEPH_OPT_MYIP;
- break;
-
- case Opt_snapdirname:
- kfree(args->snapdir_name);
- args->snapdir_name = kstrndup(argstr[0].from,
- argstr[0].to-argstr[0].from,
- GFP_KERNEL);
- break;
- case Opt_name:
- args->name = kstrndup(argstr[0].from,
- argstr[0].to-argstr[0].from,
- GFP_KERNEL);
- break;
- case Opt_secret:
- args->secret = kstrndup(argstr[0].from,
- argstr[0].to-argstr[0].from,
- GFP_KERNEL);
- break;
-
- /* misc */
- case Opt_wsize:
- args->wsize = intval;
- break;
- case Opt_rsize:
- args->rsize = intval;
- break;
- case Opt_osdtimeout:
- args->osd_timeout = intval;
- break;
- case Opt_mount_timeout:
- args->mount_timeout = intval;
- break;
- case Opt_caps_wanted_delay_min:
- args->caps_wanted_delay_min = intval;
- break;
- case Opt_caps_wanted_delay_max:
- args->caps_wanted_delay_max = intval;
- break;
- case Opt_readdir_max_entries:
- args->max_readdir = intval;
- break;
-
- case Opt_noshare:
- args->flags |= CEPH_OPT_NOSHARE;
- break;
-
- case Opt_dirstat:
- args->flags |= CEPH_OPT_DIRSTAT;
- break;
- case Opt_nodirstat:
- args->flags &= ~CEPH_OPT_DIRSTAT;
- break;
- case Opt_rbytes:
- args->flags |= CEPH_OPT_RBYTES;
- break;
- case Opt_norbytes:
- args->flags &= ~CEPH_OPT_RBYTES;
- break;
- case Opt_nocrc:
- args->flags |= CEPH_OPT_NOCRC;
- break;
- case Opt_noasyncreaddir:
- args->flags |= CEPH_OPT_NOASYNCREADDIR;
- break;
-
- default:
- BUG_ON(token);
- }
+ *popt = ceph_parse_options(options, dev_name, dev_name_end,
+ parse_fsopt_token, (void *)fsopt);
+ if (IS_ERR(*popt)) {
+ err = PTR_ERR(*popt);
+ goto out;
}
- return args;
+
+ /* success */
+ *pfsopt = fsopt;
+ return 0;
out:
- kfree(args->mon_addr);
- kfree(args);
- return ERR_PTR(err);
+ destroy_mount_options(fsopt);
+ return err;
}
-static void destroy_mount_args(struct ceph_mount_args *args)
+/**
+ * ceph_show_options - Show mount options in /proc/mounts
+ * @m: seq_file to write to
+ * @root: root of that (sub)tree
+ */
+static int ceph_show_options(struct seq_file *m, struct dentry *root)
{
- dout("destroy_mount_args %p\n", args);
- kfree(args->snapdir_name);
- args->snapdir_name = NULL;
- kfree(args->name);
- args->name = NULL;
- kfree(args->secret);
- args->secret = NULL;
- kfree(args);
+ struct ceph_fs_client *fsc = ceph_sb_to_client(root->d_sb);
+ struct ceph_mount_options *fsopt = fsc->mount_options;
+ struct ceph_options *opt = fsc->client->options;
+
+ if (opt->flags & CEPH_OPT_FSID)
+ seq_printf(m, ",fsid=%pU", &opt->fsid);
+ if (opt->flags & CEPH_OPT_NOSHARE)
+ seq_puts(m, ",noshare");
+ if (opt->flags & CEPH_OPT_NOCRC)
+ seq_puts(m, ",nocrc");
+
+ if (opt->name)
+ seq_printf(m, ",name=%s", opt->name);
+ if (opt->key)
+ seq_puts(m, ",secret=<hidden>");
+
+ if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT)
+ seq_printf(m, ",mount_timeout=%d", opt->mount_timeout);
+ if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT)
+ seq_printf(m, ",osd_idle_ttl=%d", opt->osd_idle_ttl);
+ if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT)
+ seq_printf(m, ",osdkeepalivetimeout=%d",
+ opt->osd_keepalive_timeout);
+
+ if (fsopt->flags & CEPH_MOUNT_OPT_DIRSTAT)
+ seq_puts(m, ",dirstat");
+ if ((fsopt->flags & CEPH_MOUNT_OPT_RBYTES) == 0)
+ seq_puts(m, ",norbytes");
+ if (fsopt->flags & CEPH_MOUNT_OPT_NOASYNCREADDIR)
+ seq_puts(m, ",noasyncreaddir");
+ if (fsopt->flags & CEPH_MOUNT_OPT_DCACHE)
+ seq_puts(m, ",dcache");
+ else
+ seq_puts(m, ",nodcache");
+
+ if (fsopt->wsize)
+ seq_printf(m, ",wsize=%d", fsopt->wsize);
+ if (fsopt->rsize != CEPH_RSIZE_DEFAULT)
+ seq_printf(m, ",rsize=%d", fsopt->rsize);
+ if (fsopt->rasize != CEPH_RASIZE_DEFAULT)
+ seq_printf(m, ",rasize=%d", fsopt->rasize);
+ if (fsopt->congestion_kb != default_congestion_kb())
+ seq_printf(m, ",write_congestion_kb=%d", fsopt->congestion_kb);
+ if (fsopt->caps_wanted_delay_min != CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT)
+ seq_printf(m, ",caps_wanted_delay_min=%d",
+ fsopt->caps_wanted_delay_min);
+ if (fsopt->caps_wanted_delay_max != CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT)
+ seq_printf(m, ",caps_wanted_delay_max=%d",
+ fsopt->caps_wanted_delay_max);
+ if (fsopt->cap_release_safety != CEPH_CAP_RELEASE_SAFETY_DEFAULT)
+ seq_printf(m, ",cap_release_safety=%d",
+ fsopt->cap_release_safety);
+ if (fsopt->max_readdir != CEPH_MAX_READDIR_DEFAULT)
+ seq_printf(m, ",readdir_max_entries=%d", fsopt->max_readdir);
+ if (fsopt->max_readdir_bytes != CEPH_MAX_READDIR_BYTES_DEFAULT)
+ seq_printf(m, ",readdir_max_bytes=%d", fsopt->max_readdir_bytes);
+ if (strcmp(fsopt->snapdir_name, CEPH_SNAPDIRNAME_DEFAULT))
+ seq_printf(m, ",snapdirname=%s", fsopt->snapdir_name);
+ return 0;
}
/*
- * create a fresh client instance
+ * handle any mon messages the standard library doesn't understand.
+ * return error if we don't either.
*/
-static struct ceph_client *ceph_create_client(struct ceph_mount_args *args)
+static int extra_mon_dispatch(struct ceph_client *client, struct ceph_msg *msg)
{
- struct ceph_client *client;
+ struct ceph_fs_client *fsc = client->private;
+ int type = le16_to_cpu(msg->hdr.type);
+
+ switch (type) {
+ case CEPH_MSG_MDS_MAP:
+ ceph_mdsc_handle_map(fsc->mdsc, msg);
+ return 0;
+
+ default:
+ return -1;
+ }
+}
+
+/*
+ * create a new fs client
+ */
+static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
+ struct ceph_options *opt)
+{
+ struct ceph_fs_client *fsc;
+ const unsigned supported_features =
+ CEPH_FEATURE_FLOCK |
+ CEPH_FEATURE_DIRLAYOUTHASH;
+ const unsigned required_features = 0;
int err = -ENOMEM;
- client = kzalloc(sizeof(*client), GFP_KERNEL);
- if (client == NULL)
+ fsc = kzalloc(sizeof(*fsc), GFP_KERNEL);
+ if (!fsc)
return ERR_PTR(-ENOMEM);
- mutex_init(&client->mount_mutex);
-
- init_waitqueue_head(&client->mount_wq);
+ fsc->client = ceph_create_client(opt, fsc, supported_features,
+ required_features);
+ if (IS_ERR(fsc->client)) {
+ err = PTR_ERR(fsc->client);
+ goto fail;
+ }
+ fsc->client->extra_mon_dispatch = extra_mon_dispatch;
+ fsc->client->monc.want_mdsmap = 1;
- client->sb = NULL;
- client->mount_state = CEPH_MOUNT_MOUNTING;
- client->mount_args = args;
+ fsc->mount_options = fsopt;
- client->msgr = NULL;
+ fsc->sb = NULL;
+ fsc->mount_state = CEPH_MOUNT_MOUNTING;
- client->mount_err = 0;
+ atomic_long_set(&fsc->writeback_count, 0);
- err = bdi_init(&client->backing_dev_info);
+ err = bdi_init(&fsc->backing_dev_info);
if (err < 0)
- goto fail;
+ goto fail_client;
err = -ENOMEM;
- client->wb_wq = create_workqueue("ceph-writeback");
- if (client->wb_wq == NULL)
+ /*
+ * The number of concurrent works can be high but they don't need
+ * to be processed in parallel, limit concurrency.
+ */
+ fsc->wb_wq = alloc_workqueue("ceph-writeback", 0, 1);
+ if (fsc->wb_wq == NULL)
goto fail_bdi;
- client->pg_inv_wq = create_singlethread_workqueue("ceph-pg-invalid");
- if (client->pg_inv_wq == NULL)
+ fsc->pg_inv_wq = alloc_workqueue("ceph-pg-invalid", 0, 1);
+ if (fsc->pg_inv_wq == NULL)
goto fail_wb_wq;
- client->trunc_wq = create_singlethread_workqueue("ceph-trunc");
- if (client->trunc_wq == NULL)
+ fsc->trunc_wq = alloc_workqueue("ceph-trunc", 0, 1);
+ if (fsc->trunc_wq == NULL)
goto fail_pg_inv_wq;
/* set up mempools */
err = -ENOMEM;
- client->wb_pagevec_pool = mempool_create_kmalloc_pool(10,
- client->mount_args->wsize >> PAGE_CACHE_SHIFT);
- if (!client->wb_pagevec_pool)
+ fsc->wb_pagevec_pool = mempool_create_kmalloc_pool(10,
+ fsc->mount_options->wsize >> PAGE_CACHE_SHIFT);
+ if (!fsc->wb_pagevec_pool)
goto fail_trunc_wq;
+ /* caps */
+ fsc->min_caps = fsopt->max_readdir;
+
+ return fsc;
- /* subsystems */
- err = ceph_monc_init(&client->monc, client);
- if (err < 0)
- goto fail_mempool;
- err = ceph_osdc_init(&client->osdc, client);
- if (err < 0)
- goto fail_monc;
- err = ceph_mdsc_init(&client->mdsc, client);
- if (err < 0)
- goto fail_osdc;
- return client;
-
-fail_osdc:
- ceph_osdc_stop(&client->osdc);
-fail_monc:
- ceph_monc_stop(&client->monc);
-fail_mempool:
- mempool_destroy(client->wb_pagevec_pool);
fail_trunc_wq:
- destroy_workqueue(client->trunc_wq);
+ destroy_workqueue(fsc->trunc_wq);
fail_pg_inv_wq:
- destroy_workqueue(client->pg_inv_wq);
+ destroy_workqueue(fsc->pg_inv_wq);
fail_wb_wq:
- destroy_workqueue(client->wb_wq);
+ destroy_workqueue(fsc->wb_wq);
fail_bdi:
- bdi_destroy(&client->backing_dev_info);
+ bdi_destroy(&fsc->backing_dev_info);
+fail_client:
+ ceph_destroy_client(fsc->client);
fail:
- kfree(client);
+ kfree(fsc);
return ERR_PTR(err);
}
-static void ceph_destroy_client(struct ceph_client *client)
+static void destroy_fs_client(struct ceph_fs_client *fsc)
{
- dout("destroy_client %p\n", client);
+ dout("destroy_fs_client %p\n", fsc);
+
+ destroy_workqueue(fsc->wb_wq);
+ destroy_workqueue(fsc->pg_inv_wq);
+ destroy_workqueue(fsc->trunc_wq);
+
+ bdi_destroy(&fsc->backing_dev_info);
- /* unmount */
- ceph_mdsc_stop(&client->mdsc);
- ceph_monc_stop(&client->monc);
- ceph_osdc_stop(&client->osdc);
+ mempool_destroy(fsc->wb_pagevec_pool);
- ceph_debugfs_client_cleanup(client);
- destroy_workqueue(client->wb_wq);
- destroy_workqueue(client->pg_inv_wq);
- destroy_workqueue(client->trunc_wq);
+ destroy_mount_options(fsc->mount_options);
- if (client->msgr)
- ceph_messenger_destroy(client->msgr);
- mempool_destroy(client->wb_pagevec_pool);
+ ceph_fs_debugfs_cleanup(fsc);
- destroy_mount_args(client->mount_args);
+ ceph_destroy_client(fsc->client);
- kfree(client);
- dout("destroy_client %p done\n", client);
+ kfree(fsc);
+ dout("destroy_fs_client %p done\n", fsc);
}
/*
- * Initially learn our fsid, or verify an fsid matches.
+ * caches
*/
-int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
+struct kmem_cache *ceph_inode_cachep;
+struct kmem_cache *ceph_cap_cachep;
+struct kmem_cache *ceph_dentry_cachep;
+struct kmem_cache *ceph_file_cachep;
+
+static void ceph_inode_init_once(void *foo)
{
- if (client->have_fsid) {
- if (ceph_fsid_compare(&client->fsid, fsid)) {
- print_hex_dump(KERN_ERR, "this fsid: ",
- DUMP_PREFIX_NONE, 16, 1,
- (void *)fsid, 16, 0);
- print_hex_dump(KERN_ERR, " old fsid: ",
- DUMP_PREFIX_NONE, 16, 1,
- (void *)&client->fsid, 16, 0);
- pr_err("fsid mismatch\n");
- return -1;
- }
- } else {
- pr_info("client%lld fsid " FSID_FORMAT "\n",
- client->monc.auth->global_id, PR_FSID(fsid));
- memcpy(&client->fsid, fsid, sizeof(*fsid));
- ceph_debugfs_client_init(client);
- client->have_fsid = true;
- }
+ struct ceph_inode_info *ci = foo;
+ inode_init_once(&ci->vfs_inode);
+}
+
+static int __init init_caches(void)
+{
+ ceph_inode_cachep = kmem_cache_create("ceph_inode_info",
+ sizeof(struct ceph_inode_info),
+ __alignof__(struct ceph_inode_info),
+ (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
+ ceph_inode_init_once);
+ if (ceph_inode_cachep == NULL)
+ return -ENOMEM;
+
+ ceph_cap_cachep = KMEM_CACHE(ceph_cap,
+ SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD);
+ if (ceph_cap_cachep == NULL)
+ goto bad_cap;
+
+ ceph_dentry_cachep = KMEM_CACHE(ceph_dentry_info,
+ SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD);
+ if (ceph_dentry_cachep == NULL)
+ goto bad_dentry;
+
+ ceph_file_cachep = KMEM_CACHE(ceph_file_info,
+ SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD);
+ if (ceph_file_cachep == NULL)
+ goto bad_file;
+
return 0;
+
+bad_file:
+ kmem_cache_destroy(ceph_dentry_cachep);
+bad_dentry:
+ kmem_cache_destroy(ceph_cap_cachep);
+bad_cap:
+ kmem_cache_destroy(ceph_inode_cachep);
+ return -ENOMEM;
}
+static void destroy_caches(void)
+{
+ kmem_cache_destroy(ceph_inode_cachep);
+ kmem_cache_destroy(ceph_cap_cachep);
+ kmem_cache_destroy(ceph_dentry_cachep);
+ kmem_cache_destroy(ceph_file_cachep);
+}
+
+
/*
- * true if we have the mon map (and have thus joined the cluster)
+ * ceph_umount_begin - initiate forced umount. Tear down down the
+ * mount, skipping steps that may hang while waiting for server(s).
*/
-static int have_mon_map(struct ceph_client *client)
+static void ceph_umount_begin(struct super_block *sb)
{
- return client->monc.monmap && client->monc.monmap->epoch;
+ struct ceph_fs_client *fsc = ceph_sb_to_client(sb);
+
+ dout("ceph_umount_begin - starting forced umount\n");
+ if (!fsc)
+ return;
+ fsc->mount_state = CEPH_MOUNT_SHUTDOWN;
+ return;
}
+static const struct super_operations ceph_super_ops = {
+ .alloc_inode = ceph_alloc_inode,
+ .destroy_inode = ceph_destroy_inode,
+ .write_inode = ceph_write_inode,
+ .sync_fs = ceph_sync_fs,
+ .put_super = ceph_put_super,
+ .show_options = ceph_show_options,
+ .statfs = ceph_statfs,
+ .umount_begin = ceph_umount_begin,
+};
+
/*
* Bootstrap mount by opening the root directory. Note the mount
* @started time from caller, and time out if this takes too long.
*/
-static struct dentry *open_root_dentry(struct ceph_client *client,
+static struct dentry *open_root_dentry(struct ceph_fs_client *fsc,
const char *path,
unsigned long started)
{
- struct ceph_mds_client *mdsc = &client->mdsc;
+ struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req = NULL;
int err;
struct dentry *root;
dout("open_root_inode opening '%s'\n", path);
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS);
if (IS_ERR(req))
- return ERR_PTR(PTR_ERR(req));
+ return ERR_CAST(req);
req->r_path1 = kstrdup(path, GFP_NOFS);
req->r_ino1.ino = CEPH_INO_ROOT;
req->r_ino1.snap = CEPH_NOSNAP;
req->r_started = started;
- req->r_timeout = client->mount_args->mount_timeout * HZ;
+ req->r_timeout = fsc->client->options->mount_timeout * HZ;
req->r_args.getattr.mask = cpu_to_le32(CEPH_STAT_CAP_INODE);
req->r_num_caps = 2;
err = ceph_mdsc_do_request(mdsc, NULL, req);
if (err == 0) {
- dout("open_root_inode success\n");
- if (ceph_ino(req->r_target_inode) == CEPH_INO_ROOT &&
- client->sb->s_root == NULL)
- root = d_alloc_root(req->r_target_inode);
- else
- root = d_obtain_alias(req->r_target_inode);
+ struct inode *inode = req->r_target_inode;
req->r_target_inode = NULL;
+ dout("open_root_inode success\n");
+ if (ceph_ino(inode) == CEPH_INO_ROOT &&
+ fsc->sb->s_root == NULL) {
+ root = d_make_root(inode);
+ if (!root) {
+ root = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+ } else {
+ root = d_obtain_alias(inode);
+ }
+ ceph_init_dentry(root);
dout("open_root_inode success, root dentry is %p\n", root);
} else {
root = ERR_PTR(err);
}
+out:
ceph_mdsc_put_request(req);
return root;
}
+
+
+
/*
* mount: join the ceph cluster, and open root directory.
*/
-static int ceph_mount(struct ceph_client *client, struct vfsmount *mnt,
+static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc,
const char *path)
{
- struct ceph_entity_addr *myaddr = NULL;
int err;
- unsigned long timeout = client->mount_args->mount_timeout * HZ;
unsigned long started = jiffies; /* note the start time */
struct dentry *root;
+ int first = 0; /* first vfsmount for this super_block */
dout("mount start\n");
- mutex_lock(&client->mount_mutex);
-
- /* initialize the messenger */
- if (client->msgr == NULL) {
- if (ceph_test_opt(client, MYIP))
- myaddr = &client->mount_args->my_addr;
- client->msgr = ceph_messenger_create(myaddr);
- if (IS_ERR(client->msgr)) {
- err = PTR_ERR(client->msgr);
- client->msgr = NULL;
- goto out;
- }
- client->msgr->nocrc = ceph_test_opt(client, NOCRC);
- }
+ mutex_lock(&fsc->client->mount_mutex);
- /* open session, and wait for mon, mds, and osd maps */
- err = ceph_monc_open_session(&client->monc);
+ err = __ceph_open_session(fsc->client, started);
if (err < 0)
goto out;
- while (!have_mon_map(client)) {
- err = -EIO;
- if (timeout && time_after_eq(jiffies, started + timeout))
- goto out;
-
- /* wait */
- dout("mount waiting for mon_map\n");
- err = wait_event_interruptible_timeout(client->mount_wq, /* FIXME */
- have_mon_map(client),
- timeout);
- if (err == -EINTR || err == -ERESTARTSYS)
- goto out;
- }
-
dout("mount opening root\n");
- root = open_root_dentry(client, "", started);
+ root = open_root_dentry(fsc, "", started);
if (IS_ERR(root)) {
err = PTR_ERR(root);
goto out;
}
- if (client->sb->s_root)
+ if (fsc->sb->s_root) {
dput(root);
- else
- client->sb->s_root = root;
+ } else {
+ fsc->sb->s_root = root;
+ first = 1;
+
+ err = ceph_fs_debugfs_init(fsc);
+ if (err < 0)
+ goto fail;
+ }
if (path[0] == 0) {
dget(root);
} else {
dout("mount opening base mountpoint\n");
- root = open_root_dentry(client, path, started);
+ root = open_root_dentry(fsc, path, started);
if (IS_ERR(root)) {
err = PTR_ERR(root);
- dput(client->sb->s_root);
- client->sb->s_root = NULL;
- goto out;
+ goto fail;
}
}
- mnt->mnt_root = root;
- mnt->mnt_sb = client->sb;
-
- client->mount_state = CEPH_MOUNT_MOUNTED;
+ fsc->mount_state = CEPH_MOUNT_MOUNTED;
dout("mount success\n");
- err = 0;
+ mutex_unlock(&fsc->client->mount_mutex);
+ return root;
out:
- mutex_unlock(&client->mount_mutex);
- return err;
+ mutex_unlock(&fsc->client->mount_mutex);
+ return ERR_PTR(err);
+
+fail:
+ if (first) {
+ dput(fsc->sb->s_root);
+ fsc->sb->s_root = NULL;
+ }
+ goto out;
}
static int ceph_set_super(struct super_block *s, void *data)
{
- struct ceph_client *client = data;
+ struct ceph_fs_client *fsc = data;
int ret;
dout("set_super %p data %p\n", s, data);
- s->s_flags = client->mount_args->sb_flags;
+ s->s_flags = fsc->mount_options->sb_flags;
s->s_maxbytes = 1ULL << 40; /* temp value until we get mdsmap */
- s->s_fs_info = client;
- client->sb = s;
+ s->s_fs_info = fsc;
+ fsc->sb = s;
s->s_op = &ceph_super_ops;
s->s_export_op = &ceph_export_ops;
fail:
s->s_fs_info = NULL;
- client->sb = NULL;
+ fsc->sb = NULL;
return ret;
}
*/
static int ceph_compare_super(struct super_block *sb, void *data)
{
- struct ceph_client *new = data;
- struct ceph_mount_args *args = new->mount_args;
- struct ceph_client *other = ceph_sb_to_client(sb);
- int i;
+ struct ceph_fs_client *new = data;
+ struct ceph_mount_options *fsopt = new->mount_options;
+ struct ceph_options *opt = new->client->options;
+ struct ceph_fs_client *other = ceph_sb_to_client(sb);
dout("ceph_compare_super %p\n", sb);
- if (args->flags & CEPH_OPT_FSID) {
- if (ceph_fsid_compare(&args->fsid, &other->fsid)) {
- dout("fsid doesn't match\n");
- return 0;
- }
- } else {
- /* do we share (a) monitor? */
- for (i = 0; i < new->monc.monmap->num_mon; i++)
- if (ceph_monmap_contains(other->monc.monmap,
- &new->monc.monmap->mon_inst[i].addr))
- break;
- if (i == new->monc.monmap->num_mon) {
- dout("mon ip not part of monmap\n");
- return 0;
- }
- dout("mon ip matches existing sb %p\n", sb);
+
+ if (compare_mount_options(fsopt, opt, other)) {
+ dout("monitor(s)/mount options don't match\n");
+ return 0;
}
- if (args->sb_flags != other->mount_args->sb_flags) {
+ if ((opt->flags & CEPH_OPT_FSID) &&
+ ceph_fsid_compare(&opt->fsid, &other->client->fsid)) {
+ dout("fsid doesn't match\n");
+ return 0;
+ }
+ if (fsopt->sb_flags != other->mount_options->sb_flags) {
dout("flags differ\n");
return 0;
}
/*
* construct our own bdi so we can control readahead, etc.
*/
-static int ceph_register_bdi(struct super_block *sb, struct ceph_client *client)
+static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0);
+
+static int ceph_register_bdi(struct super_block *sb,
+ struct ceph_fs_client *fsc)
{
int err;
- sb->s_bdi = &client->backing_dev_info;
-
- /* set ra_pages based on rsize mount option? */
- if (client->mount_args->rsize >= PAGE_CACHE_SIZE)
- client->backing_dev_info.ra_pages =
- (client->mount_args->rsize + PAGE_CACHE_SIZE - 1)
+ /* set ra_pages based on rasize mount option? */
+ if (fsc->mount_options->rasize >= PAGE_CACHE_SIZE)
+ fsc->backing_dev_info.ra_pages =
+ (fsc->mount_options->rasize + PAGE_CACHE_SIZE - 1)
>> PAGE_SHIFT;
- err = bdi_register_dev(&client->backing_dev_info, sb->s_dev);
+ else
+ fsc->backing_dev_info.ra_pages =
+ default_backing_dev_info.ra_pages;
+
+ err = bdi_register(&fsc->backing_dev_info, NULL, "ceph-%d",
+ atomic_long_inc_return(&bdi_seq));
+ if (!err)
+ sb->s_bdi = &fsc->backing_dev_info;
return err;
}
-static int ceph_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data,
- struct vfsmount *mnt)
+static struct dentry *ceph_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data)
{
struct super_block *sb;
- struct ceph_client *client;
+ struct ceph_fs_client *fsc;
+ struct dentry *res;
int err;
int (*compare_super)(struct super_block *, void *) = ceph_compare_super;
const char *path = NULL;
- struct ceph_mount_args *args;
+ struct ceph_mount_options *fsopt = NULL;
+ struct ceph_options *opt = NULL;
- dout("ceph_get_sb\n");
- args = parse_mount_args(flags, data, dev_name, &path);
- if (IS_ERR(args)) {
- err = PTR_ERR(args);
+ dout("ceph_mount\n");
+ err = parse_mount_options(&fsopt, &opt, flags, data, dev_name, &path);
+ if (err < 0) {
+ res = ERR_PTR(err);
goto out_final;
}
/* create client (which we may/may not use) */
- client = ceph_create_client(args);
- if (IS_ERR(client)) {
- err = PTR_ERR(client);
+ fsc = create_fs_client(fsopt, opt);
+ if (IS_ERR(fsc)) {
+ res = ERR_CAST(fsc);
+ destroy_mount_options(fsopt);
+ ceph_destroy_options(opt);
goto out_final;
}
- if (client->mount_args->flags & CEPH_OPT_NOSHARE)
+ err = ceph_mdsc_init(fsc);
+ if (err < 0) {
+ res = ERR_PTR(err);
+ goto out;
+ }
+
+ if (ceph_test_opt(fsc->client, NOSHARE))
compare_super = NULL;
- sb = sget(fs_type, compare_super, ceph_set_super, client);
+ sb = sget(fs_type, compare_super, ceph_set_super, fsc);
if (IS_ERR(sb)) {
- err = PTR_ERR(sb);
+ res = ERR_CAST(sb);
goto out;
}
- if (ceph_client(sb) != client) {
- ceph_destroy_client(client);
- client = ceph_client(sb);
- dout("get_sb got existing client %p\n", client);
+ if (ceph_sb_to_client(sb) != fsc) {
+ ceph_mdsc_destroy(fsc);
+ destroy_fs_client(fsc);
+ fsc = ceph_sb_to_client(sb);
+ dout("get_sb got existing client %p\n", fsc);
} else {
- dout("get_sb using new client %p\n", client);
- err = ceph_register_bdi(sb, client);
- if (err < 0)
+ dout("get_sb using new client %p\n", fsc);
+ err = ceph_register_bdi(sb, fsc);
+ if (err < 0) {
+ res = ERR_PTR(err);
goto out_splat;
+ }
}
- err = ceph_mount(client, mnt, path);
- if (err < 0)
+ res = ceph_real_mount(fsc, path);
+ if (IS_ERR(res))
goto out_splat;
- dout("root %p inode %p ino %llx.%llx\n", mnt->mnt_root,
- mnt->mnt_root->d_inode, ceph_vinop(mnt->mnt_root->d_inode));
- return 0;
+ dout("root %p inode %p ino %llx.%llx\n", res,
+ res->d_inode, ceph_vinop(res->d_inode));
+ return res;
out_splat:
- ceph_mdsc_close_sessions(&client->mdsc);
- up_write(&sb->s_umount);
- deactivate_super(sb);
+ ceph_mdsc_close_sessions(fsc->mdsc);
+ deactivate_locked_super(sb);
goto out_final;
out:
- ceph_destroy_client(client);
+ ceph_mdsc_destroy(fsc);
+ destroy_fs_client(fsc);
out_final:
- dout("ceph_get_sb fail %d\n", err);
- return err;
+ dout("ceph_mount fail %ld\n", PTR_ERR(res));
+ return res;
}
static void ceph_kill_sb(struct super_block *s)
{
- struct ceph_client *client = ceph_sb_to_client(s);
+ struct ceph_fs_client *fsc = ceph_sb_to_client(s);
dout("kill_sb %p\n", s);
- ceph_mdsc_pre_umount(&client->mdsc);
+ ceph_mdsc_pre_umount(fsc->mdsc);
kill_anon_super(s); /* will call put_super after sb is r/o */
- bdi_unregister(&client->backing_dev_info);
- bdi_destroy(&client->backing_dev_info);
- ceph_destroy_client(client);
+ ceph_mdsc_destroy(fsc);
+ destroy_fs_client(fsc);
}
static struct file_system_type ceph_fs_type = {
.owner = THIS_MODULE,
.name = "ceph",
- .get_sb = ceph_get_sb,
+ .mount = ceph_mount,
.kill_sb = ceph_kill_sb,
.fs_flags = FS_RENAME_DOES_D_MOVE,
};
static int __init init_ceph(void)
{
- int ret = 0;
-
- ret = ceph_debugfs_init();
- if (ret < 0)
- goto out;
-
- ret = ceph_msgr_init();
- if (ret < 0)
- goto out_debugfs;
-
- ret = init_caches();
+ int ret = init_caches();
if (ret)
- goto out_msgr;
-
- ceph_caps_init();
+ goto out;
+ ceph_xattr_init();
ret = register_filesystem(&ceph_fs_type);
if (ret)
goto out_icache;
- pr_info("loaded %d.%d.%d (mon/mds/osd proto %d/%d/%d)\n",
- CEPH_VERSION_MAJOR, CEPH_VERSION_MINOR, CEPH_VERSION_PATCH,
- CEPH_MONC_PROTOCOL, CEPH_MDSC_PROTOCOL, CEPH_OSDC_PROTOCOL);
+ pr_info("loaded (mds proto %d)\n", CEPH_MDSC_PROTOCOL);
+
return 0;
out_icache:
+ ceph_xattr_exit();
destroy_caches();
-out_msgr:
- ceph_msgr_exit();
-out_debugfs:
- ceph_debugfs_cleanup();
out:
return ret;
}
{
dout("exit_ceph\n");
unregister_filesystem(&ceph_fs_type);
- ceph_caps_finalize();
+ ceph_xattr_exit();
destroy_caches();
- ceph_msgr_exit();
- ceph_debugfs_cleanup();
}
module_init(init_ceph);
Code Review / linux-2.6.git / blobdiff