X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fstaging%2Flustre%2Flustre%2Fobdclass%2Fllog.c;h=7cb55ef79737b46c9607cc9068834cfbbcaf4e36;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=114be4a78ccfd507818773e4229db1848bb31ef0;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/kernel/drivers/staging/lustre/lustre/obdclass/llog.c b/kernel/drivers/staging/lustre/lustre/obdclass/llog.c index 114be4a78..7cb55ef79 100644 --- a/kernel/drivers/staging/lustre/lustre/obdclass/llog.c +++ b/kernel/drivers/staging/lustre/lustre/obdclass/llog.c @@ -47,7 +47,6 @@ #define DEBUG_SUBSYSTEM S_LOG - #include "../include/obd_class.h" #include "../include/lustre_log.h" #include "llog_internal.h" @@ -60,8 +59,8 @@ static struct llog_handle *llog_alloc_handle(void) { struct llog_handle *loghandle; - OBD_ALLOC_PTR(loghandle); - if (loghandle == NULL) + loghandle = kzalloc(sizeof(*loghandle), GFP_NOFS); + if (!loghandle) return NULL; init_rwsem(&loghandle->lgh_lock); @@ -88,9 +87,9 @@ static void llog_free_handle(struct llog_handle *loghandle) else if (loghandle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) LASSERT(list_empty(&loghandle->u.chd.chd_head)); LASSERT(sizeof(*(loghandle->lgh_hdr)) == LLOG_CHUNK_SIZE); - OBD_FREE(loghandle->lgh_hdr, LLOG_CHUNK_SIZE); + kfree(loghandle->lgh_hdr); out: - OBD_FREE_PTR(loghandle); + kfree(loghandle); } void llog_handle_get(struct llog_handle *loghandle) @@ -105,66 +104,6 @@ void llog_handle_put(struct llog_handle *loghandle) llog_free_handle(loghandle); } -/* returns negative on error; 0 if success; 1 if success & log destroyed */ -int llog_cancel_rec(const struct lu_env *env, struct llog_handle *loghandle, - int index) -{ - struct llog_log_hdr *llh = loghandle->lgh_hdr; - int rc = 0; - - CDEBUG(D_RPCTRACE, "Canceling %d in log "DOSTID"\n", - index, POSTID(&loghandle->lgh_id.lgl_oi)); - - if (index == 0) { - CERROR("Can't cancel index 0 which is header\n"); - return -EINVAL; - } - - spin_lock(&loghandle->lgh_hdr_lock); - if (!ext2_clear_bit(index, llh->llh_bitmap)) { - spin_unlock(&loghandle->lgh_hdr_lock); - CDEBUG(D_RPCTRACE, "Catalog index %u already clear?\n", index); - return -ENOENT; - } - - llh->llh_count--; - - if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) && - (llh->llh_count == 1) && - (loghandle->lgh_last_idx == (LLOG_BITMAP_BYTES * 8) - 1)) { - spin_unlock(&loghandle->lgh_hdr_lock); - rc = llog_destroy(env, loghandle); - if (rc < 0) { - CERROR("%s: can't destroy empty llog #"DOSTID - "#%08x: rc = %d\n", - loghandle->lgh_ctxt->loc_obd->obd_name, - POSTID(&loghandle->lgh_id.lgl_oi), - loghandle->lgh_id.lgl_ogen, rc); - goto out_err; - } - return 1; - } - spin_unlock(&loghandle->lgh_hdr_lock); - - rc = llog_write(env, loghandle, &llh->llh_hdr, NULL, 0, NULL, 0); - if (rc < 0) { - CERROR("%s: fail to write header for llog #"DOSTID - "#%08x: rc = %d\n", - loghandle->lgh_ctxt->loc_obd->obd_name, - POSTID(&loghandle->lgh_id.lgl_oi), - loghandle->lgh_id.lgl_ogen, rc); - goto out_err; - } - return 0; -out_err: - spin_lock(&loghandle->lgh_hdr_lock); - ext2_set_bit(index, llh->llh_bitmap); - llh->llh_count++; - spin_unlock(&loghandle->lgh_hdr_lock); - return rc; -} -EXPORT_SYMBOL(llog_cancel_rec); - static int llog_read_header(const struct lu_env *env, struct llog_handle *handle, struct obd_uuid *uuid) @@ -188,7 +127,7 @@ static int llog_read_header(const struct lu_env *env, llh->llh_hdr.lrh_type = LLOG_HDR_MAGIC; llh->llh_hdr.lrh_len = llh->llh_tail.lrt_len = LLOG_CHUNK_SIZE; llh->llh_hdr.lrh_index = llh->llh_tail.lrt_index = 0; - llh->llh_timestamp = get_seconds(); + llh->llh_timestamp = ktime_get_real_seconds(); if (uuid) memcpy(&llh->llh_tgtuuid, uuid, sizeof(llh->llh_tgtuuid)); @@ -207,8 +146,8 @@ int llog_init_handle(const struct lu_env *env, struct llog_handle *handle, LASSERT(handle->lgh_hdr == NULL); - OBD_ALLOC_PTR(llh); - if (llh == NULL) + llh = kzalloc(sizeof(*llh), GFP_NOFS); + if (!llh) return -ENOMEM; handle->lgh_hdr = llh; /* first assign flags to use llog_client_ops */ @@ -261,7 +200,7 @@ int llog_init_handle(const struct lu_env *env, struct llog_handle *handle, } out: if (rc) { - OBD_FREE_PTR(llh); + kfree(llh); handle->lgh_hdr = NULL; } return rc; @@ -283,7 +222,7 @@ static int llog_process_thread(void *arg) LASSERT(llh); - OBD_ALLOC(buf, LLOG_CHUNK_SIZE); + buf = kzalloc(LLOG_CHUNK_SIZE, GFP_NOFS); if (!buf) { lpi->lpi_rc = -ENOMEM; return 0; @@ -326,7 +265,7 @@ repeat: * swabbing is done at the beginning of the loop. */ for (rec = (struct llog_rec_hdr *)buf; (char *)rec < buf + LLOG_CHUNK_SIZE; - rec = (struct llog_rec_hdr *)((char *)rec + rec->lrh_len)){ + rec = (struct llog_rec_hdr *)((char *)rec + rec->lrh_len)) { CDEBUG(D_OTHER, "processing rec 0x%p type %#x\n", rec, rec->lrh_type); @@ -373,14 +312,6 @@ repeat: rc = lpi->lpi_cb(lpi->lpi_env, loghandle, rec, lpi->lpi_cbdata); last_called_index = index; - if (rc == LLOG_PROC_BREAK) { - goto out; - } else if (rc == LLOG_DEL_RECORD) { - llog_cancel_rec(lpi->lpi_env, - loghandle, - rec->lrh_index); - rc = 0; - } if (rc) goto out; } else { @@ -400,7 +331,7 @@ out: if (cd != NULL) cd->lpcd_last_idx = last_called_index; - OBD_FREE(buf, LLOG_CHUNK_SIZE); + kfree(buf); lpi->lpi_rc = rc; return 0; } @@ -434,8 +365,8 @@ int llog_process_or_fork(const struct lu_env *env, struct llog_process_info *lpi; int rc; - OBD_ALLOC_PTR(lpi); - if (lpi == NULL) { + lpi = kzalloc(sizeof(*lpi), GFP_NOFS); + if (!lpi) { CERROR("cannot alloc pointer\n"); return -ENOMEM; } @@ -454,7 +385,7 @@ int llog_process_or_fork(const struct lu_env *env, if (IS_ERR_VALUE(rc)) { CERROR("%s: cannot start thread: rc = %d\n", loghandle->lgh_ctxt->loc_obd->obd_name, rc); - OBD_FREE_PTR(lpi); + kfree(lpi); return rc; } wait_for_completion(&lpi->lpi_completion); @@ -463,7 +394,7 @@ int llog_process_or_fork(const struct lu_env *env, llog_process_thread(lpi); } rc = lpi->lpi_rc; - OBD_FREE_PTR(lpi); + kfree(lpi); return rc; } EXPORT_SYMBOL(llog_process_or_fork); @@ -475,381 +406,6 @@ int llog_process(const struct lu_env *env, struct llog_handle *loghandle, } EXPORT_SYMBOL(llog_process); -int llog_reverse_process(const struct lu_env *env, - struct llog_handle *loghandle, llog_cb_t cb, - void *data, void *catdata) -{ - struct llog_log_hdr *llh = loghandle->lgh_hdr; - struct llog_process_cat_data *cd = catdata; - void *buf; - int rc = 0, first_index = 1, index, idx; - - OBD_ALLOC(buf, LLOG_CHUNK_SIZE); - if (!buf) - return -ENOMEM; - - if (cd != NULL) - first_index = cd->lpcd_first_idx + 1; - if (cd != NULL && cd->lpcd_last_idx) - index = cd->lpcd_last_idx; - else - index = LLOG_BITMAP_BYTES * 8 - 1; - - while (rc == 0) { - struct llog_rec_hdr *rec; - struct llog_rec_tail *tail; - - /* skip records not set in bitmap */ - while (index >= first_index && - !ext2_test_bit(index, llh->llh_bitmap)) - --index; - - LASSERT(index >= first_index - 1); - if (index == first_index - 1) - break; - - /* get the buf with our target record; avoid old garbage */ - memset(buf, 0, LLOG_CHUNK_SIZE); - rc = llog_prev_block(env, loghandle, index, buf, - LLOG_CHUNK_SIZE); - if (rc) - goto out; - - rec = buf; - idx = rec->lrh_index; - CDEBUG(D_RPCTRACE, "index %u : idx %u\n", index, idx); - while (idx < index) { - rec = (void *)rec + rec->lrh_len; - if (LLOG_REC_HDR_NEEDS_SWABBING(rec)) - lustre_swab_llog_rec(rec); - idx ++; - } - LASSERT(idx == index); - tail = (void *)rec + rec->lrh_len - sizeof(*tail); - - /* process records in buffer, starting where we found one */ - while ((void *)tail > buf) { - if (tail->lrt_index == 0) { - /* no more records */ - rc = 0; - goto out; - } - - /* if set, process the callback on this record */ - if (ext2_test_bit(index, llh->llh_bitmap)) { - rec = (void *)tail - tail->lrt_len + - sizeof(*tail); - - rc = cb(env, loghandle, rec, data); - if (rc == LLOG_PROC_BREAK) { - goto out; - } else if (rc == LLOG_DEL_RECORD) { - llog_cancel_rec(env, loghandle, - tail->lrt_index); - rc = 0; - } - if (rc) - goto out; - } - - /* previous record, still in buffer? */ - --index; - if (index < first_index) { - rc = 0; - goto out; - } - tail = (void *)tail - tail->lrt_len; - } - } - -out: - if (buf) - OBD_FREE(buf, LLOG_CHUNK_SIZE); - return rc; -} -EXPORT_SYMBOL(llog_reverse_process); - -/** - * new llog API - * - * API functions: - * llog_open - open llog, may not exist - * llog_exist - check if llog exists - * llog_close - close opened llog, pair for open, frees llog_handle - * llog_declare_create - declare llog creation - * llog_create - create new llog on disk, need transaction handle - * llog_declare_write_rec - declaration of llog write - * llog_write_rec - write llog record on disk, need transaction handle - * llog_declare_add - declare llog catalog record addition - * llog_add - add llog record in catalog, need transaction handle - */ -int llog_exist(struct llog_handle *loghandle) -{ - struct llog_operations *lop; - int rc; - - rc = llog_handle2ops(loghandle, &lop); - if (rc) - return rc; - if (lop->lop_exist == NULL) - return -EOPNOTSUPP; - - rc = lop->lop_exist(loghandle); - return rc; -} -EXPORT_SYMBOL(llog_exist); - -int llog_declare_create(const struct lu_env *env, - struct llog_handle *loghandle, struct thandle *th) -{ - struct llog_operations *lop; - int raised, rc; - - rc = llog_handle2ops(loghandle, &lop); - if (rc) - return rc; - if (lop->lop_declare_create == NULL) - return -EOPNOTSUPP; - - raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE); - if (!raised) - cfs_cap_raise(CFS_CAP_SYS_RESOURCE); - rc = lop->lop_declare_create(env, loghandle, th); - if (!raised) - cfs_cap_lower(CFS_CAP_SYS_RESOURCE); - return rc; -} -EXPORT_SYMBOL(llog_declare_create); - -int llog_create(const struct lu_env *env, struct llog_handle *handle, - struct thandle *th) -{ - struct llog_operations *lop; - int raised, rc; - - rc = llog_handle2ops(handle, &lop); - if (rc) - return rc; - if (lop->lop_create == NULL) - return -EOPNOTSUPP; - - raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE); - if (!raised) - cfs_cap_raise(CFS_CAP_SYS_RESOURCE); - rc = lop->lop_create(env, handle, th); - if (!raised) - cfs_cap_lower(CFS_CAP_SYS_RESOURCE); - return rc; -} -EXPORT_SYMBOL(llog_create); - -int llog_declare_write_rec(const struct lu_env *env, - struct llog_handle *handle, - struct llog_rec_hdr *rec, int idx, - struct thandle *th) -{ - struct llog_operations *lop; - int raised, rc; - - rc = llog_handle2ops(handle, &lop); - if (rc) - return rc; - LASSERT(lop); - if (lop->lop_declare_write_rec == NULL) - return -EOPNOTSUPP; - - raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE); - if (!raised) - cfs_cap_raise(CFS_CAP_SYS_RESOURCE); - rc = lop->lop_declare_write_rec(env, handle, rec, idx, th); - if (!raised) - cfs_cap_lower(CFS_CAP_SYS_RESOURCE); - return rc; -} -EXPORT_SYMBOL(llog_declare_write_rec); - -int llog_write_rec(const struct lu_env *env, struct llog_handle *handle, - struct llog_rec_hdr *rec, struct llog_cookie *logcookies, - int numcookies, void *buf, int idx, struct thandle *th) -{ - struct llog_operations *lop; - int raised, rc, buflen; - - rc = llog_handle2ops(handle, &lop); - if (rc) - return rc; - - LASSERT(lop); - if (lop->lop_write_rec == NULL) - return -EOPNOTSUPP; - - if (buf) - buflen = rec->lrh_len + sizeof(struct llog_rec_hdr) + - sizeof(struct llog_rec_tail); - else - buflen = rec->lrh_len; - LASSERT(cfs_size_round(buflen) == buflen); - - raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE); - if (!raised) - cfs_cap_raise(CFS_CAP_SYS_RESOURCE); - rc = lop->lop_write_rec(env, handle, rec, logcookies, numcookies, - buf, idx, th); - if (!raised) - cfs_cap_lower(CFS_CAP_SYS_RESOURCE); - return rc; -} -EXPORT_SYMBOL(llog_write_rec); - -int llog_add(const struct lu_env *env, struct llog_handle *lgh, - struct llog_rec_hdr *rec, struct llog_cookie *logcookies, - void *buf, struct thandle *th) -{ - int raised, rc; - - if (lgh->lgh_logops->lop_add == NULL) - return -EOPNOTSUPP; - - raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE); - if (!raised) - cfs_cap_raise(CFS_CAP_SYS_RESOURCE); - rc = lgh->lgh_logops->lop_add(env, lgh, rec, logcookies, buf, th); - if (!raised) - cfs_cap_lower(CFS_CAP_SYS_RESOURCE); - return rc; -} -EXPORT_SYMBOL(llog_add); - -int llog_declare_add(const struct lu_env *env, struct llog_handle *lgh, - struct llog_rec_hdr *rec, struct thandle *th) -{ - int raised, rc; - - if (lgh->lgh_logops->lop_declare_add == NULL) - return -EOPNOTSUPP; - - raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE); - if (!raised) - cfs_cap_raise(CFS_CAP_SYS_RESOURCE); - rc = lgh->lgh_logops->lop_declare_add(env, lgh, rec, th); - if (!raised) - cfs_cap_lower(CFS_CAP_SYS_RESOURCE); - return rc; -} -EXPORT_SYMBOL(llog_declare_add); - -/** - * Helper function to open llog or create it if doesn't exist. - * It hides all transaction handling from caller. - */ -int llog_open_create(const struct lu_env *env, struct llog_ctxt *ctxt, - struct llog_handle **res, struct llog_logid *logid, - char *name) -{ - struct dt_device *d; - struct thandle *th; - int rc; - - rc = llog_open(env, ctxt, res, logid, name, LLOG_OPEN_NEW); - if (rc) - return rc; - - if (llog_exist(*res)) - return 0; - - LASSERT((*res)->lgh_obj != NULL); - - d = lu2dt_dev((*res)->lgh_obj->do_lu.lo_dev); - - th = dt_trans_create(env, d); - if (IS_ERR(th)) { - rc = PTR_ERR(th); - goto out; - } - - rc = llog_declare_create(env, *res, th); - if (rc == 0) { - rc = dt_trans_start_local(env, d, th); - if (rc == 0) - rc = llog_create(env, *res, th); - } - dt_trans_stop(env, d, th); -out: - if (rc) - llog_close(env, *res); - return rc; -} -EXPORT_SYMBOL(llog_open_create); - -/** - * Helper function to delete existent llog. - */ -int llog_erase(const struct lu_env *env, struct llog_ctxt *ctxt, - struct llog_logid *logid, char *name) -{ - struct llog_handle *handle; - int rc = 0, rc2; - - /* nothing to erase */ - if (name == NULL && logid == NULL) - return 0; - - rc = llog_open(env, ctxt, &handle, logid, name, LLOG_OPEN_EXISTS); - if (rc < 0) - return rc; - - rc = llog_init_handle(env, handle, LLOG_F_IS_PLAIN, NULL); - if (rc == 0) - rc = llog_destroy(env, handle); - - rc2 = llog_close(env, handle); - if (rc == 0) - rc = rc2; - return rc; -} -EXPORT_SYMBOL(llog_erase); - -/* - * Helper function for write record in llog. - * It hides all transaction handling from caller. - * Valid only with local llog. - */ -int llog_write(const struct lu_env *env, struct llog_handle *loghandle, - struct llog_rec_hdr *rec, struct llog_cookie *reccookie, - int cookiecount, void *buf, int idx) -{ - struct dt_device *dt; - struct thandle *th; - int rc; - - LASSERT(loghandle); - LASSERT(loghandle->lgh_ctxt); - LASSERT(loghandle->lgh_obj != NULL); - - dt = lu2dt_dev(loghandle->lgh_obj->do_lu.lo_dev); - - th = dt_trans_create(env, dt); - if (IS_ERR(th)) - return PTR_ERR(th); - - rc = llog_declare_write_rec(env, loghandle, rec, idx, th); - if (rc) - goto out_trans; - - rc = dt_trans_start_local(env, dt, th); - if (rc) - goto out_trans; - - down_write(&loghandle->lgh_lock); - rc = llog_write_rec(env, loghandle, rec, reccookie, - cookiecount, buf, idx, th); - up_write(&loghandle->lgh_lock); -out_trans: - dt_trans_stop(env, dt, th); - return rc; -} -EXPORT_SYMBOL(llog_write); - int llog_open(const struct lu_env *env, struct llog_ctxt *ctxt, struct llog_handle **lgh, struct llog_logid *logid, char *name, enum llog_open_param open_param) @@ -903,105 +459,3 @@ out: return rc; } EXPORT_SYMBOL(llog_close); - -int llog_is_empty(const struct lu_env *env, struct llog_ctxt *ctxt, - char *name) -{ - struct llog_handle *llh; - int rc = 0; - - rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS); - if (rc < 0) { - if (likely(rc == -ENOENT)) - rc = 0; - goto out; - } - - rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL); - if (rc) - goto out_close; - rc = llog_get_size(llh); - -out_close: - llog_close(env, llh); -out: - /* header is record 1 */ - return rc <= 1; -} -EXPORT_SYMBOL(llog_is_empty); - -int llog_copy_handler(const struct lu_env *env, struct llog_handle *llh, - struct llog_rec_hdr *rec, void *data) -{ - struct llog_handle *copy_llh = data; - - /* Append all records */ - return llog_write(env, copy_llh, rec, NULL, 0, NULL, -1); -} -EXPORT_SYMBOL(llog_copy_handler); - -/* backup plain llog */ -int llog_backup(const struct lu_env *env, struct obd_device *obd, - struct llog_ctxt *ctxt, struct llog_ctxt *bctxt, - char *name, char *backup) -{ - struct llog_handle *llh, *bllh; - int rc; - - - - /* open original log */ - rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS); - if (rc < 0) { - /* the -ENOENT case is also reported to the caller - * but silently so it should handle that if needed. - */ - if (rc != -ENOENT) - CERROR("%s: failed to open log %s: rc = %d\n", - obd->obd_name, name, rc); - return rc; - } - - rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL); - if (rc) - goto out_close; - - /* Make sure there's no old backup log */ - rc = llog_erase(env, bctxt, NULL, backup); - if (rc < 0 && rc != -ENOENT) - goto out_close; - - /* open backup log */ - rc = llog_open_create(env, bctxt, &bllh, NULL, backup); - if (rc) { - CERROR("%s: failed to open backup logfile %s: rc = %d\n", - obd->obd_name, backup, rc); - goto out_close; - } - - /* check that backup llog is not the same object as original one */ - if (llh->lgh_obj == bllh->lgh_obj) { - CERROR("%s: backup llog %s to itself (%s), objects %p/%p\n", - obd->obd_name, name, backup, llh->lgh_obj, - bllh->lgh_obj); - rc = -EEXIST; - goto out_backup; - } - - rc = llog_init_handle(env, bllh, LLOG_F_IS_PLAIN, NULL); - if (rc) - goto out_backup; - - /* Copy log record by record */ - rc = llog_process_or_fork(env, llh, llog_copy_handler, (void *)bllh, - NULL, false); - if (rc) - CERROR("%s: failed to backup log %s: rc = %d\n", - obd->obd_name, name, rc); -out_backup: - llog_close(env, bllh); -out_close: - llog_close(env, llh); - return rc; -} -EXPORT_SYMBOL(llog_backup);