* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2014, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
struct lov_stripe_md *lsm = lio->lis_object->lo_lsm;
struct cl_io *parent = lio->lis_cl.cis_io;
- switch(io->ci_type) {
- case CIT_SETATTR: {
- io->u.ci_setattr.sa_attr = parent->u.ci_setattr.sa_attr;
- io->u.ci_setattr.sa_valid = parent->u.ci_setattr.sa_valid;
- io->u.ci_setattr.sa_capa = parent->u.ci_setattr.sa_capa;
+ switch (io->ci_type) {
+ case CIT_SETATTR: {
+ io->u.ci_setattr.sa_attr = parent->u.ci_setattr.sa_attr;
+ io->u.ci_setattr.sa_attr_flags =
+ parent->u.ci_setattr.sa_attr_flags;
+ io->u.ci_setattr.sa_valid = parent->u.ci_setattr.sa_valid;
+ io->u.ci_setattr.sa_stripe_index = stripe;
+ io->u.ci_setattr.sa_parent_fid =
+ parent->u.ci_setattr.sa_parent_fid;
if (cl_io_is_trunc(io)) {
loff_t new_size = parent->u.ci_setattr.sa_attr.lvb_size;
}
break;
}
+ case CIT_DATA_VERSION: {
+ io->u.ci_data_version.dv_data_version = 0;
+ io->u.ci_data_version.dv_flags =
+ parent->u.ci_data_version.dv_flags;
+ break;
+ }
case CIT_FAULT: {
struct cl_object *obj = parent->ci_obj;
loff_t off = cl_offset(obj, parent->u.ci_fault.ft_index);
case CIT_FSYNC: {
io->u.ci_fsync.fi_start = start;
io->u.ci_fsync.fi_end = end;
- io->u.ci_fsync.fi_capa = parent->u.ci_fsync.fi_capa;
io->u.ci_fsync.fi_fid = parent->u.ci_fsync.fi_fid;
io->u.ci_fsync.fi_mode = parent->u.ci_fsync.fi_mode;
break;
lio->lis_endpos = OBD_OBJECT_EOF;
break;
+ case CIT_DATA_VERSION:
+ lio->lis_pos = 0;
+ lio->lis_endpos = OBD_OBJECT_EOF;
+ break;
+
case CIT_FAULT: {
pgoff_t index = io->u.ci_fault.ft_index;
lio->lis_pos = cl_offset(io->ci_obj, index);
EXIT;
}
-static obd_off lov_offset_mod(obd_off val, int delta)
+static loff_t lov_offset_mod(loff_t val, int delta)
{
if (val != OBD_OBJECT_EOF)
val += delta;
{
struct lov_io *lio = cl2lov_io(env, ios);
struct lov_stripe_md *lsm = lio->lis_object->lo_lsm;
- struct lov_io_sub *sub;
- obd_off endpos;
- obd_off start;
- obd_off end;
+ struct lov_io_sub *sub;
+ loff_t endpos;
+ loff_t start;
+ loff_t end;
int stripe;
int rc = 0;
LASSERT(rc == 0);
}
+static void
+lov_io_data_version_end(const struct lu_env *env, const struct cl_io_slice *ios)
+{
+ struct lov_io *lio = cl2lov_io(env, ios);
+ struct cl_io *parent = lio->lis_cl.cis_io;
+ struct lov_io_sub *sub;
+
+ ENTRY;
+ list_for_each_entry(sub, &lio->lis_active, sub_linkage) {
+ lov_io_end_wrapper(env, sub->sub_io);
+
+ parent->u.ci_data_version.dv_data_version +=
+ sub->sub_io->u.ci_data_version.dv_data_version;
+
+ if (parent->ci_result == 0)
+ parent->ci_result = sub->sub_io->ci_result;
+ }
+
+ EXIT;
+}
+
static void lov_io_iter_fini(const struct lu_env *env,
const struct cl_io_slice *ios)
{
EXIT;
}
+static int lov_io_read_ahead(const struct lu_env *env,
+ const struct cl_io_slice *ios,
+ pgoff_t start, struct cl_read_ahead *ra)
+{
+ struct lov_io *lio = cl2lov_io(env, ios);
+ struct lov_object *loo = lio->lis_object;
+ struct cl_object *obj = lov2cl(loo);
+ struct lov_layout_raid0 *r0 = lov_r0(loo);
+ struct lov_io_sub *sub;
+ loff_t suboff;
+ pgoff_t ra_end;
+ unsigned int pps; /* pages per stripe */
+ int stripe;
+ int rc;
+ ENTRY;
+
+ stripe = lov_stripe_number(loo->lo_lsm, cl_offset(obj, start));
+ if (unlikely(r0->lo_sub[stripe] == NULL))
+ RETURN(-EIO);
+
+ sub = lov_sub_get(env, lio, stripe);
+
+ lov_stripe_offset(loo->lo_lsm, cl_offset(obj, start), stripe, &suboff);
+ rc = cl_io_read_ahead(sub->sub_env, sub->sub_io,
+ cl_index(lovsub2cl(r0->lo_sub[stripe]), suboff),
+ ra);
+ lov_sub_put(sub);
+
+ CDEBUG(D_READA, DFID " cra_end = %lu, stripes = %d, rc = %d\n",
+ PFID(lu_object_fid(lov2lu(loo))), ra->cra_end, r0->lo_nr, rc);
+ if (rc != 0)
+ RETURN(rc);
+
+ /**
+ * Adjust the stripe index by layout of raid0. ra->cra_end is the maximum
+ * page index covered by an underlying DLM lock.
+ * This function converts cra_end from stripe level to file level, and
+ * make sure it's not beyond stripe boundary.
+ */
+ if (r0->lo_nr == 1) /* single stripe file */
+ RETURN(0);
+
+ /* cra_end is stripe level, convert it into file level */
+ ra_end = ra->cra_end;
+ if (ra_end != CL_PAGE_EOF)
+ ra_end = lov_stripe_pgoff(loo->lo_lsm, ra_end, stripe);
+
+ pps = loo->lo_lsm->lsm_stripe_size >> PAGE_CACHE_SHIFT;
+
+ CDEBUG(D_READA, DFID " max_index = %lu, pps = %u, "
+ "stripe_size = %u, stripe no = %u, start index = %lu\n",
+ PFID(lu_object_fid(lov2lu(loo))), ra_end, pps,
+ loo->lo_lsm->lsm_stripe_size, stripe, start);
+
+ /* never exceed the end of the stripe */
+ ra->cra_end = min_t(pgoff_t, ra_end, start + pps - start % pps - 1);
+ RETURN(0);
+}
+
/**
* lov implementation of cl_operations::cio_submit() method. It takes a list
* of pages in \a queue, splits it into per-stripe sub-lists, invokes
.cio_start = lov_io_start,
.cio_end = lov_io_end
},
+ [CIT_DATA_VERSION] = {
+ .cio_fini = lov_io_fini,
+ .cio_iter_init = lov_io_iter_init,
+ .cio_iter_fini = lov_io_iter_fini,
+ .cio_lock = lov_io_lock,
+ .cio_unlock = lov_io_unlock,
+ .cio_start = lov_io_start,
+ .cio_end = lov_io_data_version_end,
+ },
[CIT_FAULT] = {
.cio_fini = lov_io_fini,
.cio_iter_init = lov_io_iter_init,
.cio_fini = lov_io_fini
}
},
+ .cio_read_ahead = lov_io_read_ahead,
.cio_submit = lov_io_submit,
.cio_commit_async = lov_io_commit_async,
};
EXIT;
}
+static int lov_empty_io_submit(const struct lu_env *env,
+ const struct cl_io_slice *ios,
+ enum cl_req_type crt, struct cl_2queue *queue)
+{
+ return -EBADF;
+}
+
static void lov_empty_impossible(const struct lu_env *env,
struct cl_io_slice *ios)
{
.cio_fini = lov_empty_io_fini
}
},
- .cio_submit = LOV_EMPTY_IMPOSSIBLE,
+ .cio_submit = lov_empty_io_submit,
.cio_commit_async = LOV_EMPTY_IMPOSSIBLE
};
break;
case CIT_FSYNC:
case CIT_SETATTR:
+ case CIT_DATA_VERSION:
result = +1;
break;
case CIT_WRITE:
LASSERTF(0, "invalid type %d\n", io->ci_type);
case CIT_MISC:
case CIT_FSYNC:
+ case CIT_DATA_VERSION:
result = 1;
break;
case CIT_SETATTR:
* - in setattr, for truncate
*/
/* the truncate is for size > 0 so triggers a restore */
- if (cl_io_is_trunc(io))
+ if (cl_io_is_trunc(io)) {
io->ci_restore_needed = 1;
- result = -ENODATA;
+ result = -ENODATA;
+ } else
+ result = 1;
break;
case CIT_READ:
case CIT_WRITE:
git://git.whamcloud.com / fs / lustre-release.git / blobdiff