diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h index 0534665df905..28aed684364f 100644 --- a/drivers/staging/lustre/lustre/llite/llite_internal.h +++ b/drivers/staging/lustre/lustre/llite/llite_internal.h @@ -505,6 +505,7 @@ struct ll_sb_info { * clustred nfs */ struct rmtacl_ctl_table ll_rct; struct eacl_table ll_et; + __kernel_fsid_t ll_fsid; }; #define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024) @@ -833,6 +834,7 @@ char *ll_get_fsname(struct super_block *sb, char *buf, int buflen); /* llite/llite_nfs.c */ extern struct export_operations lustre_export_operations; __u32 get_uuid2int(const char *name, int len); +void get_uuid2fsid(const char *name, int len, __kernel_fsid_t *fsid); struct inode *search_inode_for_lustre(struct super_block *sb, const struct lu_fid *fid); diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c index 39d519b30cb4..d7d87b1539b4 100644 --- a/drivers/staging/lustre/lustre/llite/llite_lib.c +++ b/drivers/staging/lustre/lustre/llite/llite_lib.c @@ -583,8 +583,10 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, /* s_dev is also used in lt_compare() to compare two fs, but that is * only a node-local comparison. */ uuid = obd_get_uuid(sbi->ll_md_exp); - if (uuid != NULL) + if (uuid != NULL) { sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid)); + get_uuid2fsid(uuid->uuid, strlen(uuid->uuid), &sbi->ll_fsid); + } if (data != NULL) OBD_FREE_PTR(data); @@ -1615,7 +1617,7 @@ int ll_statfs(struct dentry *de, struct kstatfs *sfs) sfs->f_blocks = osfs.os_blocks; sfs->f_bfree = osfs.os_bfree; sfs->f_bavail = osfs.os_bavail; - + sfs->f_fsid = ll_s2sbi(sb)->ll_fsid; return 0; } diff --git a/drivers/staging/lustre/lustre/llite/llite_nfs.c b/drivers/staging/lustre/lustre/llite/llite_nfs.c index f142a1ec3f86..b830004803e4 100644 --- a/drivers/staging/lustre/lustre/llite/llite_nfs.c +++ b/drivers/staging/lustre/lustre/llite/llite_nfs.c @@ -58,6 +58,22 @@ __u32 get_uuid2int(const char *name, int len) return (key0 << 1); } +void get_uuid2fsid(const char *name, int len, __kernel_fsid_t *fsid) +{ + __u64 key = 0, key0 = 0x12a3fe2d, key1 = 0x37abe8f9; + + while (len--) { + key = key1 + (key0 ^ (*name++ * 7152373)); + if (key & 0x8000000000000000ULL) + key -= 0x7fffffffffffffffULL; + key1 = key0; + key0 = key; + } + + fsid->val[0] = key; + fsid->val[1] = key >> 32; +} + static int ll_nfs_test_inode(struct inode *inode, void *opaque) { return lu_fid_eq(&ll_i2info(inode)->lli_fid,