diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/llite/vvp_dev.c')
-rw-r--r-- | drivers/staging/lustre/lustre/llite/vvp_dev.c | 270 |
1 files changed, 203 insertions, 67 deletions
diff --git a/drivers/staging/lustre/lustre/llite/vvp_dev.c b/drivers/staging/lustre/lustre/llite/vvp_dev.c index 282b70b776da..47101de1c020 100644 --- a/drivers/staging/lustre/lustre/llite/vvp_dev.c +++ b/drivers/staging/lustre/lustre/llite/vvp_dev.c @@ -36,6 +36,7 @@ * cl_device and cl_device_type implementation for VVP layer. * * Author: Nikita Danilov <nikita.danilov@sun.com> + * Author: Jinshan Xiong <jinshan.xiong@intel.com> */ #define DEBUG_SUBSYSTEM S_LLITE @@ -56,13 +57,33 @@ * "llite_" (var. "ll_") prefix. */ -static struct kmem_cache *vvp_thread_kmem; +static struct kmem_cache *ll_thread_kmem; +struct kmem_cache *vvp_lock_kmem; +struct kmem_cache *vvp_object_kmem; +struct kmem_cache *vvp_req_kmem; static struct kmem_cache *vvp_session_kmem; +static struct kmem_cache *vvp_thread_kmem; + static struct lu_kmem_descr vvp_caches[] = { { - .ckd_cache = &vvp_thread_kmem, - .ckd_name = "vvp_thread_kmem", - .ckd_size = sizeof(struct vvp_thread_info), + .ckd_cache = &ll_thread_kmem, + .ckd_name = "ll_thread_kmem", + .ckd_size = sizeof(struct ll_thread_info), + }, + { + .ckd_cache = &vvp_lock_kmem, + .ckd_name = "vvp_lock_kmem", + .ckd_size = sizeof(struct vvp_lock), + }, + { + .ckd_cache = &vvp_object_kmem, + .ckd_name = "vvp_object_kmem", + .ckd_size = sizeof(struct vvp_object), + }, + { + .ckd_cache = &vvp_req_kmem, + .ckd_name = "vvp_req_kmem", + .ckd_size = sizeof(struct vvp_req), }, { .ckd_cache = &vvp_session_kmem, @@ -70,29 +91,40 @@ static struct lu_kmem_descr vvp_caches[] = { .ckd_size = sizeof(struct vvp_session) }, { + .ckd_cache = &vvp_thread_kmem, + .ckd_name = "vvp_thread_kmem", + .ckd_size = sizeof(struct vvp_thread_info), + }, + { .ckd_cache = NULL } }; -static void *vvp_key_init(const struct lu_context *ctx, - struct lu_context_key *key) +static void *ll_thread_key_init(const struct lu_context *ctx, + struct lu_context_key *key) { struct vvp_thread_info *info; - info = kmem_cache_zalloc(vvp_thread_kmem, GFP_NOFS); + info = kmem_cache_zalloc(ll_thread_kmem, GFP_NOFS); if (!info) info = ERR_PTR(-ENOMEM); return info; } -static void vvp_key_fini(const struct lu_context *ctx, - struct lu_context_key *key, void *data) +static void ll_thread_key_fini(const struct lu_context *ctx, + struct lu_context_key *key, void *data) { struct vvp_thread_info *info = data; - kmem_cache_free(vvp_thread_kmem, info); + kmem_cache_free(ll_thread_kmem, info); } +struct lu_context_key ll_thread_key = { + .lct_tags = LCT_CL_THREAD, + .lct_init = ll_thread_key_init, + .lct_fini = ll_thread_key_fini +}; + static void *vvp_session_key_init(const struct lu_context *ctx, struct lu_context_key *key) { @@ -112,34 +144,127 @@ static void vvp_session_key_fini(const struct lu_context *ctx, kmem_cache_free(vvp_session_kmem, session); } -struct lu_context_key vvp_key = { - .lct_tags = LCT_CL_THREAD, - .lct_init = vvp_key_init, - .lct_fini = vvp_key_fini -}; - struct lu_context_key vvp_session_key = { .lct_tags = LCT_SESSION, .lct_init = vvp_session_key_init, .lct_fini = vvp_session_key_fini }; +void *vvp_thread_key_init(const struct lu_context *ctx, + struct lu_context_key *key) +{ + struct vvp_thread_info *vti; + + vti = kmem_cache_zalloc(vvp_thread_kmem, GFP_NOFS); + if (!vti) + vti = ERR_PTR(-ENOMEM); + return vti; +} + +void vvp_thread_key_fini(const struct lu_context *ctx, + struct lu_context_key *key, void *data) +{ + struct vvp_thread_info *vti = data; + + kmem_cache_free(vvp_thread_kmem, vti); +} + +struct lu_context_key vvp_thread_key = { + .lct_tags = LCT_CL_THREAD, + .lct_init = vvp_thread_key_init, + .lct_fini = vvp_thread_key_fini +}; + /* type constructor/destructor: vvp_type_{init,fini,start,stop}(). */ -LU_TYPE_INIT_FINI(vvp, &ccc_key, &ccc_session_key, &vvp_key, &vvp_session_key); +LU_TYPE_INIT_FINI(vvp, &vvp_thread_key, &ll_thread_key, &vvp_session_key); static const struct lu_device_operations vvp_lu_ops = { .ldo_object_alloc = vvp_object_alloc }; static const struct cl_device_operations vvp_cl_ops = { - .cdo_req_init = ccc_req_init + .cdo_req_init = vvp_req_init }; +static struct lu_device *vvp_device_free(const struct lu_env *env, + struct lu_device *d) +{ + struct vvp_device *vdv = lu2vvp_dev(d); + struct cl_site *site = lu2cl_site(d->ld_site); + struct lu_device *next = cl2lu_dev(vdv->vdv_next); + + if (d->ld_site) { + cl_site_fini(site); + kfree(site); + } + cl_device_fini(lu2cl_dev(d)); + kfree(vdv); + return next; +} + static struct lu_device *vvp_device_alloc(const struct lu_env *env, struct lu_device_type *t, struct lustre_cfg *cfg) { - return ccc_device_alloc(env, t, cfg, &vvp_lu_ops, &vvp_cl_ops); + struct vvp_device *vdv; + struct lu_device *lud; + struct cl_site *site; + int rc; + + vdv = kzalloc(sizeof(*vdv), GFP_NOFS); + if (!vdv) + return ERR_PTR(-ENOMEM); + + lud = &vdv->vdv_cl.cd_lu_dev; + cl_device_init(&vdv->vdv_cl, t); + vvp2lu_dev(vdv)->ld_ops = &vvp_lu_ops; + vdv->vdv_cl.cd_ops = &vvp_cl_ops; + + site = kzalloc(sizeof(*site), GFP_NOFS); + if (site) { + rc = cl_site_init(site, &vdv->vdv_cl); + if (rc == 0) { + rc = lu_site_init_finish(&site->cs_lu); + } else { + LASSERT(!lud->ld_site); + CERROR("Cannot init lu_site, rc %d.\n", rc); + kfree(site); + } + } else { + rc = -ENOMEM; + } + if (rc != 0) { + vvp_device_free(env, lud); + lud = ERR_PTR(rc); + } + return lud; +} + +static int vvp_device_init(const struct lu_env *env, struct lu_device *d, + const char *name, struct lu_device *next) +{ + struct vvp_device *vdv; + int rc; + + vdv = lu2vvp_dev(d); + vdv->vdv_next = lu2cl_dev(next); + + LASSERT(d->ld_site && next->ld_type); + next->ld_site = d->ld_site; + rc = next->ld_type->ldt_ops->ldto_device_init(env, next, + next->ld_type->ldt_name, + NULL); + if (rc == 0) { + lu_device_get(next); + lu_ref_add(&next->ld_reference, "lu-stack", &lu_site_init); + } + return rc; +} + +static struct lu_device *vvp_device_fini(const struct lu_env *env, + struct lu_device *d) +{ + return cl2lu_dev(lu2vvp_dev(d)->vdv_next); } static const struct lu_device_type_operations vvp_device_type_ops = { @@ -150,9 +275,9 @@ static const struct lu_device_type_operations vvp_device_type_ops = { .ldto_stop = vvp_type_stop, .ldto_device_alloc = vvp_device_alloc, - .ldto_device_free = ccc_device_free, - .ldto_device_init = ccc_device_init, - .ldto_device_fini = ccc_device_fini + .ldto_device_free = vvp_device_free, + .ldto_device_init = vvp_device_init, + .ldto_device_fini = vvp_device_fini, }; struct lu_device_type vvp_device_type = { @@ -168,20 +293,27 @@ struct lu_device_type vvp_device_type = { */ int vvp_global_init(void) { - int result; + int rc; - result = lu_kmem_init(vvp_caches); - if (result == 0) { - result = ccc_global_init(&vvp_device_type); - if (result != 0) - lu_kmem_fini(vvp_caches); - } - return result; + rc = lu_kmem_init(vvp_caches); + if (rc != 0) + return rc; + + rc = lu_device_type_init(&vvp_device_type); + if (rc != 0) + goto out_kmem; + + return 0; + +out_kmem: + lu_kmem_fini(vvp_caches); + + return rc; } void vvp_global_fini(void) { - ccc_global_fini(&vvp_device_type); + lu_device_type_fini(&vvp_device_type); lu_kmem_fini(vvp_caches); } @@ -205,13 +337,14 @@ int cl_sb_init(struct super_block *sb) cl = cl_type_setup(env, NULL, &vvp_device_type, sbi->ll_dt_exp->exp_obd->obd_lu_dev); if (!IS_ERR(cl)) { - cl2ccc_dev(cl)->cdv_sb = sb; + cl2vvp_dev(cl)->vdv_sb = sb; sbi->ll_cl = cl; sbi->ll_site = cl2lu_dev(cl)->ld_site; } cl_env_put(env, &refcheck); - } else + } else { rc = PTR_ERR(env); + } return rc; } @@ -356,23 +489,18 @@ static loff_t vvp_pgcache_find(const struct lu_env *env, return ~0ULL; clob = vvp_pgcache_obj(env, dev, &id); if (clob) { - struct cl_object_header *hdr; - int nr; - struct cl_page *pg; - - /* got an object. Find next page. */ - hdr = cl_object_header(clob); + struct inode *inode = vvp_object_inode(clob); + struct page *vmpage; + int nr; - spin_lock(&hdr->coh_page_guard); - nr = radix_tree_gang_lookup(&hdr->coh_tree, - (void **)&pg, - id.vpi_index, 1); + nr = find_get_pages_contig(inode->i_mapping, + id.vpi_index, 1, &vmpage); if (nr > 0) { - id.vpi_index = pg->cp_index; + id.vpi_index = vmpage->index; /* Cant support over 16T file */ - nr = !(pg->cp_index > 0xffffffff); + nr = !(vmpage->index > 0xffffffff); + put_page(vmpage); } - spin_unlock(&hdr->coh_page_guard); lu_object_ref_del(&clob->co_lu, "dump", current); cl_object_put(env, clob); @@ -398,21 +526,20 @@ static loff_t vvp_pgcache_find(const struct lu_env *env, static void vvp_pgcache_page_show(const struct lu_env *env, struct seq_file *seq, struct cl_page *page) { - struct ccc_page *cpg; + struct vvp_page *vpg; struct page *vmpage; int has_flags; - cpg = cl2ccc_page(cl_page_at(page, &vvp_device_type)); - vmpage = cpg->cpg_page; - seq_printf(seq, " %5i | %p %p %s %s %s %s | %p %lu/%u(%p) %lu %u [", + vpg = cl2vvp_page(cl_page_at(page, &vvp_device_type)); + vmpage = vpg->vpg_page; + seq_printf(seq, " %5i | %p %p %s %s %s %s | %p "DFID"(%p) %lu %u [", 0 /* gen */, - cpg, page, + vpg, page, "none", - cpg->cpg_write_queued ? "wq" : "- ", - cpg->cpg_defer_uptodate ? "du" : "- ", + vpg->vpg_write_queued ? "wq" : "- ", + vpg->vpg_defer_uptodate ? "du" : "- ", PageWriteback(vmpage) ? "wb" : "-", - vmpage, vmpage->mapping->host->i_ino, - vmpage->mapping->host->i_generation, + vmpage, PFID(ll_inode2fid(vmpage->mapping->host)), vmpage->mapping->host, vmpage->index, page_count(vmpage)); has_flags = 0; @@ -431,8 +558,6 @@ static int vvp_pgcache_show(struct seq_file *f, void *v) struct ll_sb_info *sbi; struct cl_object *clob; struct lu_env *env; - struct cl_page *page; - struct cl_object_header *hdr; struct vvp_pgcache_id id; int refcheck; int result; @@ -444,27 +569,38 @@ static int vvp_pgcache_show(struct seq_file *f, void *v) sbi = f->private; clob = vvp_pgcache_obj(env, &sbi->ll_cl->cd_lu_dev, &id); if (clob) { - hdr = cl_object_header(clob); - - spin_lock(&hdr->coh_page_guard); - page = cl_page_lookup(hdr, id.vpi_index); - spin_unlock(&hdr->coh_page_guard); + struct inode *inode = vvp_object_inode(clob); + struct cl_page *page = NULL; + struct page *vmpage; + + result = find_get_pages_contig(inode->i_mapping, + id.vpi_index, 1, + &vmpage); + if (result > 0) { + lock_page(vmpage); + page = cl_vmpage_page(vmpage, clob); + unlock_page(vmpage); + put_page(vmpage); + } - seq_printf(f, "%8x@"DFID": ", - id.vpi_index, PFID(&hdr->coh_lu.loh_fid)); + seq_printf(f, "%8x@" DFID ": ", id.vpi_index, + PFID(lu_object_fid(&clob->co_lu))); if (page) { vvp_pgcache_page_show(env, f, page); cl_page_put(env, page); - } else + } else { seq_puts(f, "missing\n"); + } lu_object_ref_del(&clob->co_lu, "dump", current); cl_object_put(env, clob); - } else + } else { seq_printf(f, "%llx missing\n", pos); + } cl_env_put(env, &refcheck); result = 0; - } else + } else { result = PTR_ERR(env); + } return result; } |