diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/include/lustre_fid.h')
| -rw-r--r-- | drivers/staging/lustre/lustre/include/lustre_fid.h | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/staging/lustre/lustre/include/lustre_fid.h b/drivers/staging/lustre/lustre/include/lustre_fid.h index 9b1a9c695113..ab4a92390a43 100644 --- a/drivers/staging/lustre/lustre/include/lustre_fid.h +++ b/drivers/staging/lustre/lustre/include/lustre_fid.h @@ -251,7 +251,8 @@ static inline void lu_local_name_obj_fid(struct lu_fid *fid, __u32 oid) /* For new FS (>= 2.4), the root FID will be changed to * [FID_SEQ_ROOT:1:0], for existing FS, (upgraded to 2.4), - * the root FID will still be IGIF */ + * the root FID will still be IGIF + */ static inline int fid_is_root(const struct lu_fid *fid) { return unlikely((fid_seq(fid) == FID_SEQ_ROOT && @@ -294,7 +295,8 @@ static inline int fid_is_namespace_visible(const struct lu_fid *fid) const __u64 seq = fid_seq(fid); /* Here, we cannot distinguish whether the normal FID is for OST - * object or not. It is caller's duty to check more if needed. */ + * object or not. It is caller's duty to check more if needed. + */ return (!fid_is_last_id(fid) && (fid_seq_is_norm(seq) || fid_seq_is_igif(seq))) || fid_is_root(fid) || fid_is_dot_lustre(fid); @@ -433,7 +435,7 @@ fid_extract_from_res_name(struct lu_fid *fid, const struct ldlm_res_id *res) */ static inline struct ldlm_res_id * fid_build_quota_res_name(const struct lu_fid *glb_fid, union lquota_id *qid, - struct ldlm_res_id *res) + struct ldlm_res_id *res) { fid_build_reg_res_name(glb_fid, res); res->name[LUSTRE_RES_ID_QUOTA_SEQ_OFF] = fid_seq(&qid->qid_fid); @@ -516,7 +518,8 @@ static inline int ostid_res_name_eq(struct ost_id *oi, struct ldlm_res_id *name) { /* Note: it is just a trick here to save some effort, probably the - * correct way would be turn them into the FID and compare */ + * correct way would be turn them into the FID and compare + */ if (fid_seq_is_mdt0(ostid_seq(oi))) { return name->name[LUSTRE_RES_ID_SEQ_OFF] == ostid_id(oi) && name->name[LUSTRE_RES_ID_VER_OID_OFF] == ostid_seq(oi); @@ -589,12 +592,14 @@ static inline __u64 fid_flatten(const struct lu_fid *fid) static inline __u32 fid_hash(const struct lu_fid *f, int bits) { /* all objects with same id and different versions will belong to same - * collisions list. */ + * collisions list. + */ return hash_long(fid_flatten(f), bits); } /** - * map fid to 32 bit value for ino on 32bit systems. */ + * map fid to 32 bit value for ino on 32bit systems. + */ static inline __u32 fid_flatten32(const struct lu_fid *fid) { __u32 ino; @@ -611,7 +616,8 @@ static inline __u32 fid_flatten32(const struct lu_fid *fid) * that inodes generated at about the same time have a reduced chance * of collisions. This will give a period of 2^12 = 1024 unique clients * (from SEQ) and up to min(LUSTRE_SEQ_MAX_WIDTH, 2^20) = 128k objects - * (from OID), or up to 128M inodes without collisions for new files. */ + * (from OID), or up to 128M inodes without collisions for new files. + */ ino = ((seq & 0x000fffffULL) << 12) + ((seq >> 8) & 0xfffff000) + (seq >> (64 - (40-8)) & 0xffffff00) + (fid_oid(fid) & 0xff000fff) + ((fid_oid(fid) & 0x00fff000) << 8); |