diff options
author | Stephen Rothwell <sfr@canb.auug.org.au> | 2010-11-29 10:33:14 +1100 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2010-11-29 10:33:14 +1100 |
commit | 5e873df1fdf51a26cb2571c80813829eb7dd0ae5 (patch) | |
tree | 62ed669b1e5d72a1a1dfe92bd75f6b40652c5b1b | |
parent | 6cf84502dfbed6e162ccefc49c734246ab1b9d70 (diff) | |
parent | cba1a66d511d46c426ea02c322293b48f3b88cf2 (diff) |
Merge remote branch 'ceph/for-next'
-rw-r--r-- | fs/ceph/dir.c | 20 | ||||
-rw-r--r-- | fs/ceph/export.c | 2 | ||||
-rw-r--r-- | fs/ceph/inode.c | 4 | ||||
-rw-r--r-- | fs/ceph/mds_client.c | 32 | ||||
-rw-r--r-- | fs/ceph/mds_client.h | 1 | ||||
-rw-r--r-- | fs/ceph/super.c | 3 | ||||
-rw-r--r-- | fs/ceph/super.h | 2 | ||||
-rw-r--r-- | include/linux/ceph/ceph_fs.h | 16 | ||||
-rw-r--r-- | net/ceph/ceph_hash.c | 3 |
9 files changed, 67 insertions, 16 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 7d447af84ec4..149fb8bf4313 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1215,6 +1215,26 @@ void ceph_dentry_lru_del(struct dentry *dn) } } +/* + * Return name hash for a given dentry. This is dependent on + * the parent directory's hash function. + */ +unsigned ceph_dentry_hash(struct dentry *dn) +{ + struct inode *dir = dn->d_parent->d_inode; + struct ceph_inode_info *dci = ceph_inode(dir); + + switch (dci->i_dir_layout.dl_dir_hash) { + case 0: /* for backward compat */ + case CEPH_STR_HASH_LINUX: + return dn->d_name.hash; + + default: + return ceph_str_hash(dci->i_dir_layout.dl_dir_hash, + dn->d_name.name, dn->d_name.len); + } +} + const struct file_operations ceph_dir_fops = { .read = ceph_read_dir, .readdir = ceph_readdir, diff --git a/fs/ceph/export.c b/fs/ceph/export.c index 2297d9426992..e41056174bf8 100644 --- a/fs/ceph/export.c +++ b/fs/ceph/export.c @@ -59,7 +59,7 @@ static int ceph_encode_fh(struct dentry *dentry, u32 *rawfh, int *max_len, dout("encode_fh %p connectable\n", dentry); cfh->ino = ceph_ino(dentry->d_inode); cfh->parent_ino = ceph_ino(parent->d_inode); - cfh->parent_name_hash = parent->d_name.hash; + cfh->parent_name_hash = ceph_dentry_hash(parent); *max_len = connected_handle_length; type = 2; } else if (*max_len >= handle_length) { diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index bf1286588f26..e791fa34b23d 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -297,6 +297,8 @@ struct inode *ceph_alloc_inode(struct super_block *sb) ci->i_release_count = 0; ci->i_symlink = NULL; + memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); + ci->i_fragtree = RB_ROOT; mutex_init(&ci->i_fragtree_mutex); @@ -680,6 +682,8 @@ static int fill_inode(struct inode *inode, inode->i_op = &ceph_dir_iops; inode->i_fop = &ceph_dir_fops; + ci->i_dir_layout = iinfo->dir_layout; + ci->i_files = le64_to_cpu(info->files); ci->i_subdirs = le64_to_cpu(info->subdirs); ci->i_rbytes = le64_to_cpu(info->rbytes); diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 098b18508479..6316da3d12f1 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -60,7 +60,8 @@ static const struct ceph_connection_operations mds_con_ops; * parse individual inode info */ static int parse_reply_info_in(void **p, void *end, - struct ceph_mds_reply_info_in *info) + struct ceph_mds_reply_info_in *info, + int features) { int err = -EIO; @@ -74,6 +75,12 @@ static int parse_reply_info_in(void **p, void *end, info->symlink = *p; *p += info->symlink_len; + if (features & CEPH_FEATURE_DIRLAYOUTHASH) + ceph_decode_copy_safe(p, end, &info->dir_layout, + sizeof(info->dir_layout), bad); + else + memset(&info->dir_layout, 0, sizeof(info->dir_layout)); + ceph_decode_32_safe(p, end, info->xattr_len, bad); ceph_decode_need(p, end, info->xattr_len, bad); info->xattr_data = *p; @@ -88,12 +95,13 @@ bad: * target inode. */ static int parse_reply_info_trace(void **p, void *end, - struct ceph_mds_reply_info_parsed *info) + struct ceph_mds_reply_info_parsed *info, + int features) { int err; if (info->head->is_dentry) { - err = parse_reply_info_in(p, end, &info->diri); + err = parse_reply_info_in(p, end, &info->diri, features); if (err < 0) goto out_bad; @@ -114,7 +122,7 @@ static int parse_reply_info_trace(void **p, void *end, } if (info->head->is_target) { - err = parse_reply_info_in(p, end, &info->targeti); + err = parse_reply_info_in(p, end, &info->targeti, features); if (err < 0) goto out_bad; } @@ -134,7 +142,8 @@ out_bad: * parse readdir results */ static int parse_reply_info_dir(void **p, void *end, - struct ceph_mds_reply_info_parsed *info) + struct ceph_mds_reply_info_parsed *info, + int features) { u32 num, i = 0; int err; @@ -182,7 +191,7 @@ static int parse_reply_info_dir(void **p, void *end, *p += sizeof(struct ceph_mds_reply_lease); /* inode */ - err = parse_reply_info_in(p, end, &info->dir_in[i]); + err = parse_reply_info_in(p, end, &info->dir_in[i], features); if (err < 0) goto out_bad; i++; @@ -205,7 +214,8 @@ out_bad: * parse entire mds reply */ static int parse_reply_info(struct ceph_msg *msg, - struct ceph_mds_reply_info_parsed *info) + struct ceph_mds_reply_info_parsed *info, + int features) { void *p, *end; u32 len; @@ -218,7 +228,7 @@ static int parse_reply_info(struct ceph_msg *msg, /* trace */ ceph_decode_32_safe(&p, end, len, bad); if (len > 0) { - err = parse_reply_info_trace(&p, p+len, info); + err = parse_reply_info_trace(&p, p+len, info, features); if (err < 0) goto out_bad; } @@ -226,7 +236,7 @@ static int parse_reply_info(struct ceph_msg *msg, /* dir content */ ceph_decode_32_safe(&p, end, len, bad); if (len > 0) { - err = parse_reply_info_dir(&p, p+len, info); + err = parse_reply_info_dir(&p, p+len, info, features); if (err < 0) goto out_bad; } @@ -622,7 +632,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc, } else { /* dir + name */ inode = dir; - hash = req->r_dentry->d_name.hash; + hash = ceph_dentry_hash(req->r_dentry); is_hash = true; } } @@ -2069,7 +2079,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) dout("handle_reply tid %lld result %d\n", tid, result); rinfo = &req->r_reply_info; - err = parse_reply_info(msg, rinfo); + err = parse_reply_info(msg, rinfo, session->s_con.peer_features); mutex_unlock(&mdsc->mutex); mutex_lock(&session->s_mutex); diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 9341fd4f1432..21e02a59abaf 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -35,6 +35,7 @@ struct ceph_cap; */ struct ceph_mds_reply_info_in { struct ceph_mds_reply_inode *in; + struct ceph_dir_layout dir_layout; u32 symlink_len; char *symlink; u32 xattr_len; diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 08b460ae0539..1417f3f3e246 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -428,7 +428,8 @@ struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt, goto fail; } fsc->client->extra_mon_dispatch = extra_mon_dispatch; - fsc->client->supported_features |= CEPH_FEATURE_FLOCK; + fsc->client->supported_features |= CEPH_FEATURE_FLOCK | + CEPH_FEATURE_DIRLAYOUTHASH; fsc->client->monc.want_mdsmap = 1; fsc->mount_options = fsopt; diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 7f01728a4657..6e0826695112 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -239,6 +239,7 @@ struct ceph_inode_info { unsigned i_ceph_flags; unsigned long i_release_count; + struct ceph_dir_layout i_dir_layout; struct ceph_file_layout i_layout; char *i_symlink; @@ -768,6 +769,7 @@ extern void ceph_dentry_lru_add(struct dentry *dn); extern void ceph_dentry_lru_touch(struct dentry *dn); extern void ceph_dentry_lru_del(struct dentry *dn); extern void ceph_invalidate_dentry_lease(struct dentry *dentry); +extern unsigned ceph_dentry_hash(struct dentry *dn); /* * our d_ops vary depending on whether the inode is live, diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h index c3c74aef289d..09dcc0c2ffd5 100644 --- a/include/linux/ceph/ceph_fs.h +++ b/include/linux/ceph/ceph_fs.h @@ -43,6 +43,10 @@ #define CEPH_FEATURE_NOSRCADDR (1<<1) #define CEPH_FEATURE_MONCLOCKCHECK (1<<2) #define CEPH_FEATURE_FLOCK (1<<3) +#define CEPH_FEATURE_SUBSCRIBE2 (1<<4) +#define CEPH_FEATURE_MONNAMES (1<<5) +#define CEPH_FEATURE_RECONNECT_SEQ (1<<6) +#define CEPH_FEATURE_DIRLAYOUTHASH (1<<7) /* @@ -55,10 +59,10 @@ struct ceph_file_layout { __le32 fl_stripe_count; /* over this many objects */ __le32 fl_object_size; /* until objects are this big, then move to new objects */ - __le32 fl_cas_hash; /* 0 = none; 1 = sha256 */ + __le32 fl_cas_hash; /* UNUSED. 0 = none; 1 = sha256 */ /* pg -> disk layout */ - __le32 fl_object_stripe_unit; /* for per-object parity, if any */ + __le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */ /* object -> pg layout */ __le32 fl_pg_preferred; /* preferred primary for pg (-1 for none) */ @@ -69,6 +73,12 @@ struct ceph_file_layout { int ceph_file_layout_is_valid(const struct ceph_file_layout *layout); +struct ceph_dir_layout { + __u8 dl_dir_hash; /* see ceph_hash.h for ids */ + __u8 dl_unused1; + __u16 dl_unused2; + __u32 dl_unused3; +} __attribute__ ((packed)); /* crypto algorithms */ #define CEPH_CRYPTO_NONE 0x0 @@ -457,7 +467,7 @@ struct ceph_mds_reply_inode { struct ceph_timespec rctime; struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ } __attribute__ ((packed)); -/* followed by frag array, then symlink string, then xattr blob */ +/* followed by frag array, symlink string, dir layout, xattr blob */ /* reply_lease follows dname, and reply_inode */ struct ceph_mds_reply_lease { diff --git a/net/ceph/ceph_hash.c b/net/ceph/ceph_hash.c index 815ef8826796..0a1b53bce76d 100644 --- a/net/ceph/ceph_hash.c +++ b/net/ceph/ceph_hash.c @@ -1,5 +1,6 @@ #include <linux/ceph/types.h> +#include <linux/module.h> /* * Robert Jenkin's hash function. @@ -104,6 +105,7 @@ unsigned ceph_str_hash(int type, const char *s, unsigned len) return -1; } } +EXPORT_SYMBOL(ceph_str_hash); const char *ceph_str_hash_name(int type) { @@ -116,3 +118,4 @@ const char *ceph_str_hash_name(int type) return "unknown"; } } +EXPORT_SYMBOL(ceph_str_hash_name); |