-
kalpak authoredb=16227 i=adilger i=shadow add lsm argument to obd_get_info. For some get_info calls the lsm was being sent as part of the key which was a hack. Now lsm can be sent as an argument.
kalpak authoredb=16227 i=adilger i=shadow add lsm argument to obd_get_info. For some get_info calls the lsm was being sent as part of the key which was a hack. Now lsm can be sent as an argument.
llite_lib.c 84.31 KiB
/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see [sun.com URL with a
* copy of GPLv2].
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* GPL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/llite/llite_lib.c
*
* Lustre Light Super operations
*/
#define DEBUG_SUBSYSTEM S_LLITE
#include <linux/module.h>
#include <linux/types.h>
#include <linux/random.h>
#include <linux/version.h>
#include <linux/mm.h>
#include <lustre_lite.h>
#include <lustre_ha.h>
#include <lustre_dlm.h>
#include <lprocfs_status.h>
#include <lustre_disk.h>
#include <lustre_param.h>
#include <lustre_log.h>
#include <obd_cksum.h>
#include <lustre_cache.h>
#include "llite_internal.h"
cfs_mem_cache_t *ll_file_data_slab;
LIST_HEAD(ll_super_blocks);
spinlock_t ll_sb_lock = SPIN_LOCK_UNLOCKED;
extern struct address_space_operations ll_aops;
extern struct address_space_operations ll_dir_aops;
#ifndef log2
#define log2(n) ffz(~(n))
#endif
static inline void ll_pglist_fini(struct ll_sb_info *sbi)
{
struct page *page;
int i;
if (sbi->ll_pglist == NULL)
return;
for_each_possible_cpu(i) {
page = sbi->ll_pglist[i]->llpd_page;
if (page) {
sbi->ll_pglist[i] = NULL;
__free_page(page);
}
}
OBD_FREE(sbi->ll_pglist, sizeof(void *)*num_possible_cpus());
sbi->ll_pglist = NULL;
}
static inline int ll_pglist_init(struct ll_sb_info *sbi)
{
struct ll_pglist_data *pd;
unsigned long budget;
int i, color = 0;
ENTRY;
OBD_ALLOC(sbi->ll_pglist, sizeof(void *) * num_possible_cpus());
if (sbi->ll_pglist == NULL)
RETURN(-ENOMEM);
budget = sbi->ll_async_page_max / num_online_cpus();
for_each_possible_cpu(i) {
struct page *page = alloc_pages_node(cpu_to_node(i),
GFP_KERNEL, 0);
if (page == NULL) {
ll_pglist_fini(sbi);
RETURN(-ENOMEM);
}
if (color + L1_CACHE_ALIGN(sizeof(*pd)) > PAGE_SIZE)
color = 0;
pd = (struct ll_pglist_data *)(page_address(page) + color);
memset(pd, 0, sizeof(*pd));
spin_lock_init(&pd->llpd_lock);
INIT_LIST_HEAD(&pd->llpd_list);
if (cpu_online(i))
pd->llpd_budget = budget;
pd->llpd_cpu = i;
pd->llpd_page = page;
atomic_set(&pd->llpd_sample_count, 0);
sbi->ll_pglist[i] = pd;
color += L1_CACHE_ALIGN(sizeof(*pd));
}
RETURN(0);
}
static struct ll_sb_info *ll_init_sbi(void)
{
struct ll_sb_info *sbi = NULL;
unsigned long pages;
struct sysinfo si;
class_uuid_t uuid;
int i;
ENTRY;
OBD_ALLOC(sbi, sizeof(*sbi)); if (!sbi)
RETURN(NULL);
OBD_ALLOC(sbi->ll_async_page_sample, sizeof(long)*num_possible_cpus());
if (sbi->ll_async_page_sample == NULL)
GOTO(out, 0);
spin_lock_init(&sbi->ll_lock);
spin_lock_init(&sbi->ll_lco.lco_lock);
spin_lock_init(&sbi->ll_pp_extent_lock);
spin_lock_init(&sbi->ll_process_lock);
sbi->ll_rw_stats_on = 0;
si_meminfo(&si);
pages = si.totalram - si.totalhigh;
if (pages >> (20 - CFS_PAGE_SHIFT) < 512)
sbi->ll_async_page_max = pages / 2;
else
sbi->ll_async_page_max = (pages / 4) * 3;
lcounter_init(&sbi->ll_async_page_count);
spin_lock_init(&sbi->ll_async_page_reblnc_lock);
sbi->ll_async_page_sample_max = 64 * num_online_cpus();
sbi->ll_async_page_reblnc_count = 0;
sbi->ll_async_page_clock_hand = 0;
if (ll_pglist_init(sbi))
GOTO(out, 0);
sbi->ll_ra_info.ra_max_pages = min(pages / 32,
SBI_DEFAULT_READAHEAD_MAX);
sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
SBI_DEFAULT_READAHEAD_WHOLE_MAX;
sbi->ll_contention_time = SBI_DEFAULT_CONTENTION_SECONDS;
sbi->ll_lockless_truncate_enable = SBI_DEFAULT_LOCKLESS_TRUNCATE_ENABLE;
INIT_LIST_HEAD(&sbi->ll_conn_chain);
INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
ll_generate_random_uuid(uuid);
class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
spin_lock(&ll_sb_lock);
list_add_tail(&sbi->ll_list, &ll_super_blocks);
spin_unlock(&ll_sb_lock);
#ifdef ENABLE_LLITE_CHECKSUM
sbi->ll_flags |= LL_SBI_CHECKSUM;
#endif
#ifdef HAVE_LRU_RESIZE_SUPPORT
sbi->ll_flags |= LL_SBI_LRU_RESIZE;
#endif
#ifdef HAVE_EXPORT___IGET
INIT_LIST_HEAD(&sbi->ll_deathrow);
spin_lock_init(&sbi->ll_deathrow_lock);
#endif
for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_r_hist.oh_lock);
spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].pp_w_hist.oh_lock);
}
/* metadata statahead is enabled by default */
sbi->ll_sa_max = LL_SA_RPC_DEF;
RETURN(sbi);
out:
if (sbi->ll_async_page_sample)
OBD_FREE(sbi->ll_async_page_sample, sizeof(long) * num_possible_cpus());
ll_pglist_fini(sbi);
OBD_FREE(sbi, sizeof(*sbi));
RETURN(NULL);
}
void ll_free_sbi(struct super_block *sb)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
ENTRY;
if (sbi != NULL) {
ll_pglist_fini(sbi);
spin_lock(&ll_sb_lock);
list_del(&sbi->ll_list);
spin_unlock(&ll_sb_lock);
lcounter_destroy(&sbi->ll_async_page_count);
OBD_FREE(sbi->ll_async_page_sample,
sizeof(long) * num_possible_cpus());
OBD_FREE(sbi, sizeof(*sbi));
}
EXIT;
}
static struct dentry_operations ll_d_root_ops = {
#ifdef DCACHE_LUSTRE_INVALID
.d_compare = ll_dcompare,
#endif
};
/* Initialize the default and maximum LOV EA and cookie sizes. This allows
* us to make MDS RPCs with large enough reply buffers to hold the
* maximum-sized (= maximum striped) EA and cookie without having to
* calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
static int ll_init_ea_size(struct obd_export *md_exp, struct obd_export *dt_exp)
{
struct lov_stripe_md lsm = { .lsm_magic = LOV_MAGIC };
__u32 valsize = sizeof(struct lov_desc);
int rc, easize, def_easize, cookiesize;
struct lov_desc desc;
__u32 stripes;
ENTRY;
rc = obd_get_info(dt_exp, sizeof(KEY_LOVDESC), KEY_LOVDESC,
&valsize, &desc, NULL);
if (rc)
RETURN(rc);
stripes = min(desc.ld_tgt_count, (__u32)LOV_MAX_STRIPE_COUNT);
lsm.lsm_stripe_count = stripes;
easize = obd_size_diskmd(dt_exp, &lsm);
lsm.lsm_stripe_count = desc.ld_default_stripe_count;
def_easize = obd_size_diskmd(dt_exp, &lsm);
cookiesize = stripes * sizeof(struct llog_cookie);
CDEBUG(D_HA, "updating max_mdsize/max_cookiesize: %d/%d\n",
easize, cookiesize);
rc = md_init_ea_size(md_exp, easize, def_easize, cookiesize);
RETURN(rc);
}
static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
{
struct inode *root = 0;
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct obd_device *obd;
struct lu_fid rootfid; struct obd_capa *oc = NULL;
struct obd_statfs osfs;
struct ptlrpc_request *request = NULL;
struct lustre_handle dt_conn = {0, };
struct lustre_handle md_conn = {0, };
struct obd_connect_data *data = NULL;
struct lustre_md lmd;
obd_valid valid;
int size, err, checksum;
ENTRY;
obd = class_name2obd(md);
if (!obd) {
CERROR("MD %s: not setup or attached\n", md);
RETURN(-EINVAL);
}
OBD_ALLOC_PTR(data);
if (data == NULL)
RETURN(-ENOMEM);
if (proc_lustre_fs_root) {
err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
dt, md);
if (err < 0)
CERROR("could not register mount in /proc/fs/lustre\n");
}
/* indicate the features supported by this client */
data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
OBD_CONNECT_JOIN | OBD_CONNECT_ATTRFID |
OBD_CONNECT_VERSION | OBD_CONNECT_MDS_CAPA |
OBD_CONNECT_OSS_CAPA | OBD_CONNECT_CANCELSET|
OBD_CONNECT_FID | OBD_CONNECT_AT;
#ifdef HAVE_LRU_RESIZE_SUPPORT
if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
#endif
#ifdef CONFIG_FS_POSIX_ACL
data->ocd_connect_flags |= OBD_CONNECT_ACL;
#endif
data->ocd_ibits_known = MDS_INODELOCK_FULL;
data->ocd_version = LUSTRE_VERSION_CODE;
if (sb->s_flags & MS_RDONLY)
data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
if (sbi->ll_flags & LL_SBI_USER_XATTR)
data->ocd_connect_flags |= OBD_CONNECT_XATTR;
#ifdef HAVE_MS_FLOCK_LOCK
/* force vfs to use lustre handler for flock() calls - bug 10743 */
sb->s_flags |= MS_FLOCK_LOCK;
#endif
if (sbi->ll_flags & LL_SBI_FLOCK)
sbi->ll_fop = &ll_file_operations_flock;
else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
sbi->ll_fop = &ll_file_operations;
else
sbi->ll_fop = &ll_file_operations_noflock;
/* real client */
data->ocd_connect_flags |= OBD_CONNECT_REAL;
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
data->ocd_connect_flags &= ~OBD_CONNECT_LCL_CLIENT;
data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT;
} else {
data->ocd_connect_flags &= ~OBD_CONNECT_RMT_CLIENT;
data->ocd_connect_flags |= OBD_CONNECT_LCL_CLIENT; }
err = obd_connect(NULL, &md_conn, obd, &sbi->ll_sb_uuid, data, NULL);
if (err == -EBUSY) {
LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
"recovery, of which this client is not a "
"part. Please wait for recovery to complete,"
" abort, or time out.\n", md);
GOTO(out, err);
} else if (err) {
CERROR("cannot connect to %s: rc = %d\n", md, err);
GOTO(out, err);
}
sbi->ll_md_exp = class_conn2export(&md_conn);
err = obd_fid_init(sbi->ll_md_exp);
if (err) {
CERROR("Can't init metadata layer FID infrastructure, "
"rc %d\n", err);
GOTO(out_md, err);
}
err = obd_statfs(obd, &osfs, cfs_time_current_64() - HZ, 0);
if (err)
GOTO(out_md_fid, err);
size = sizeof(*data);
err = obd_get_info(sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
KEY_CONN_DATA, &size, data, NULL);
if (err) {
CERROR("Get connect data failed: %d \n", err);
GOTO(out_md, err);
}
LASSERT(osfs.os_bsize);
sb->s_blocksize = osfs.os_bsize;
sb->s_blocksize_bits = log2(osfs.os_bsize);
sb->s_magic = LL_SUPER_MAGIC;
/* for bug 11559. in $LINUX/fs/read_write.c, function do_sendfile():
* retval = in_file->f_op->sendfile(...);
* if (*ppos > max)
* retval = -EOVERFLOW;
*
* it will check if *ppos is greater than max. However, max equals to
* s_maxbytes, which is a negative integer in a x86_64 box since loff_t
* has been defined as a signed long long ineger in linux kernel. */
#if BITS_PER_LONG == 64
sb->s_maxbytes = PAGE_CACHE_MAXBYTES >> 1;
#else
sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
#endif
sbi->ll_namelen = osfs.os_namelen;
sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
!(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
LCONSOLE_INFO("Disabling user_xattr feature because "
"it is not supported on the server\n");
sbi->ll_flags &= ~LL_SBI_USER_XATTR;
}
if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
#ifdef MS_POSIXACL
sb->s_flags |= MS_POSIXACL;
#endif
sbi->ll_flags |= LL_SBI_ACL;
} else {
LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
#ifdef MS_POSIXACL sb->s_flags &= ~MS_POSIXACL;
#endif
sbi->ll_flags &= ~LL_SBI_ACL;
}
if (data->ocd_connect_flags & OBD_CONNECT_JOIN)
sbi->ll_flags |= LL_SBI_JOIN;
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
if (!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT)) {
/* sometimes local client claims to be remote, but mdt
* will disagree when client gss not applied. */
LCONSOLE_INFO("client claims to be remote, but server "
"rejected, forced to be local.\n");
sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
}
} else {
if (!(data->ocd_connect_flags & OBD_CONNECT_LCL_CLIENT)) {
/* with gss applied, remote client can not claim to be
* local, so mdt maybe force client to be remote. */
LCONSOLE_INFO("client claims to be local, but server "
"rejected, forced to be remote.\n");
sbi->ll_flags |= LL_SBI_RMT_CLIENT;
}
}
if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
LCONSOLE_INFO("client enabled MDS capability!\n");
sbi->ll_flags |= LL_SBI_MDS_CAPA;
}
if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
LCONSOLE_INFO("client enabled OSS capability!\n");
sbi->ll_flags |= LL_SBI_OSS_CAPA;
}
sbi->ll_sdev_orig = sb->s_dev;
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
/* We set sb->s_dev equal on all lustre clients in order to support
* NFS export clustering. NFSD requires that the FSID be the same
* on all clients. */
/* s_dev is also used in lt_compare() to compare two fs, but that is
* only a node-local comparison. */
/* XXX: this will not work with LMV */
sb->s_dev = get_uuid2int(sbi2mdc(sbi)->cl_target_uuid.uuid,
strlen(sbi2mdc(sbi)->cl_target_uuid.uuid));
#endif
obd = class_name2obd(dt);
if (!obd) {
CERROR("DT %s: not setup or attached\n", dt);
GOTO(out_md_fid, err = -ENODEV);
}
data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
OBD_CONNECT_AT;
if (sbi->ll_flags & LL_SBI_OSS_CAPA)
data->ocd_connect_flags |= OBD_CONNECT_OSS_CAPA;
if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
/* OBD_CONNECT_CKSUM should always be set, even if checksums are
* disabled by default, because it can still be enabled on the
* fly via /proc. As a consequence, we still need to come to an
* agreement on the supported algorithms at connect time */
data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
data->ocd_cksum_types = OBD_CKSUM_ADLER;
else
/* send the list of supported checksum types */
data->ocd_cksum_types = OBD_CKSUM_ALL;
}
#ifdef HAVE_LRU_RESIZE_SUPPORT
data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
#endif
CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d "
"ocd_grant: %d\n", data->ocd_connect_flags,
data->ocd_version, data->ocd_grant);
obd->obd_upcall.onu_owner = &sbi->ll_lco;
obd->obd_upcall.onu_upcall = ll_ocd_update;
data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
err = obd_connect(NULL, &dt_conn, obd, &sbi->ll_sb_uuid, data, NULL);
if (err == -EBUSY) {
LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
"recovery, of which this client is not a "
"part. Please wait for recovery to "
"complete, abort, or time out.\n", dt);
GOTO(out_md_fid, err);
} else if (err) {
CERROR("Cannot connect to %s: rc = %d\n", dt, err);
GOTO(out_md_fid, err);
}
sbi->ll_dt_exp = class_conn2export(&dt_conn);
err = obd_fid_init(sbi->ll_dt_exp);
if (err) {
CERROR("Can't init data layer FID infrastructure, "
"rc %d\n", err);
GOTO(out_dt, err);
}
spin_lock(&sbi->ll_lco.lco_lock);
sbi->ll_lco.lco_flags = data->ocd_connect_flags;
spin_unlock(&sbi->ll_lco.lco_lock);
err = obd_register_page_removal_cb(sbi->ll_dt_exp,
ll_page_removal_cb,
ll_pin_extent_cb);
if (err) {
CERROR("cannot register page removal callback: rc = %d\n",err);
GOTO(out_dt, err);
}
err = obd_register_lock_cancel_cb(sbi->ll_dt_exp,
ll_extent_lock_cancel_cb);
if (err) {
CERROR("cannot register lock cancel callback: rc = %d\n", err);
GOTO(out_page_rm_cb, err);
}
err = ll_init_ea_size(sbi->ll_md_exp, sbi->ll_dt_exp);;
if (err) {
CERROR("cannot set max EA and cookie sizes: rc = %d\n", err);
GOTO(out_lock_cn_cb, err);
}
err = obd_prep_async_page(sbi->ll_dt_exp, NULL, NULL, NULL,
0, NULL, NULL, NULL, 0, NULL);
if (err < 0) {
LCONSOLE_ERROR_MSG(0x151, "There are no OST's in this "
"filesystem. There must be at least one "
"active OST for a client to start.\n");
GOTO(out_lock_cn_cb, err); }
if (!ll_async_page_slab) {
ll_async_page_slab_size =
size_round(sizeof(struct ll_async_page)) + err;
ll_async_page_slab = cfs_mem_cache_create("ll_async_page",
ll_async_page_slab_size,
0, 0);
if (!ll_async_page_slab)
GOTO(out_lock_cn_cb, err = -ENOMEM);
}
err = md_getstatus(sbi->ll_md_exp, &rootfid, &oc);
if (err) {
CERROR("cannot mds_connect: rc = %d\n", err);
GOTO(out_lock_cn_cb, err);
}
CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&rootfid));
sbi->ll_root_fid = rootfid;
sb->s_op = &lustre_super_operations;
sb->s_export_op = &lustre_export_operations;
/* make root inode
* XXX: move this to after cbd setup? */
valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
valid |= OBD_MD_FLRMTPERM;
else if (sbi->ll_flags & LL_SBI_ACL)
valid |= OBD_MD_FLACL;
err = md_getattr(sbi->ll_md_exp, &rootfid, oc, valid, 0, &request);
if (oc)
free_capa(oc);
if (err) {
CERROR("md_getattr failed for root: rc = %d\n", err);
GOTO(out_lock_cn_cb, err);
}
memset(&lmd, 0, sizeof(lmd));
err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
sbi->ll_md_exp, &lmd);
if (err) {
CERROR("failed to understand root inode md: rc = %d\n", err);
ptlrpc_req_finished (request);
GOTO(out_lock_cn_cb, err);
}
LASSERT(fid_is_sane(&sbi->ll_root_fid));
root = ll_iget(sb, ll_fid_build_ino(sbi, &sbi->ll_root_fid), &lmd);
md_free_lustre_md(sbi->ll_md_exp, &lmd);
ptlrpc_req_finished(request);
if (root == NULL || is_bad_inode(root)) {
if (lmd.lsm)
obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
#ifdef CONFIG_FS_POSIX_ACL
if (lmd.posix_acl) {
posix_acl_release(lmd.posix_acl);
lmd.posix_acl = NULL;
}
#endif
CERROR("lustre_lite: bad iget4 for root\n");
GOTO(out_root, err = -EBADF);
}
err = ll_close_thread_start(&sbi->ll_lcq);
if (err) {
CERROR("cannot start close thread: rc %d\n", err);
GOTO(out_root, err);
}
#ifdef CONFIG_FS_POSIX_ACL
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
rct_init(&sbi->ll_rct);
et_init(&sbi->ll_et);
}
#endif
checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
err = obd_set_info_async(sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
KEY_CHECKSUM, sizeof(checksum), &checksum,
NULL);
sb->s_root = d_alloc_root(root);
if (data != NULL)
OBD_FREE(data, sizeof(*data));
sb->s_root->d_op = &ll_d_root_ops;
RETURN(err);
out_root:
if (root)
iput(root);
out_lock_cn_cb:
obd_unregister_lock_cancel_cb(sbi->ll_dt_exp,
ll_extent_lock_cancel_cb);
out_page_rm_cb:
obd_unregister_page_removal_cb(sbi->ll_dt_exp,
ll_page_removal_cb);
obd_fid_fini(sbi->ll_dt_exp);
out_dt:
obd_disconnect(sbi->ll_dt_exp);
sbi->ll_dt_exp = NULL;
out_md_fid:
obd_fid_fini(sbi->ll_md_exp);
out_md:
obd_disconnect(sbi->ll_md_exp);
sbi->ll_md_exp = NULL;
out:
if (data != NULL)
OBD_FREE_PTR(data);
lprocfs_unregister_mountpoint(sbi);
return err;
}
int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
{
int size, rc;
*lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
size = sizeof(int);
rc = obd_get_info(sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
KEY_MAX_EASIZE, &size, lmmsize, NULL);
if (rc)
CERROR("Get max mdsize error rc %d \n", rc);
RETURN(rc);
}
void ll_dump_inode(struct inode *inode)
{
struct list_head *tmp;
int dentry_count = 0;
LASSERT(inode != NULL);
list_for_each(tmp, &inode->i_dentry)
dentry_count++;
CERROR("inode %p dump: dev=%s ino=%lu mode=%o count=%u, %d dentries\n",
inode, ll_i2mdexp(inode)->exp_obd->obd_name, inode->i_ino,
inode->i_mode, atomic_read(&inode->i_count), dentry_count);}
void lustre_dump_dentry(struct dentry *dentry, int recur)
{
struct list_head *tmp;
int subdirs = 0;
LASSERT(dentry != NULL);
list_for_each(tmp, &dentry->d_subdirs)
subdirs++;
CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
" flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
dentry->d_name.len, dentry->d_name.name,
dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
dentry->d_parent, dentry->d_inode, atomic_read(&dentry->d_count),
dentry->d_flags, dentry->d_fsdata, subdirs);
if (dentry->d_inode != NULL)
ll_dump_inode(dentry->d_inode);
if (recur == 0)
return;
list_for_each(tmp, &dentry->d_subdirs) {
struct dentry *d = list_entry(tmp, struct dentry, d_child);
lustre_dump_dentry(d, recur - 1);
}
}
#ifdef HAVE_EXPORT___IGET
static void prune_dir_dentries(struct inode *inode)
{
struct dentry *dentry, *prev = NULL;
/* due to lustre specific logic, a directory
* can have few dentries - a bug from VFS POV */
restart:
spin_lock(&dcache_lock);
if (!list_empty(&inode->i_dentry)) {
dentry = list_entry(inode->i_dentry.prev,
struct dentry, d_alias);
/* in order to prevent infinite loops we
* break if previous dentry is busy */
if (dentry != prev) {
prev = dentry;
dget_locked(dentry);
spin_unlock(&dcache_lock);
/* try to kill all child dentries */
lock_dentry(dentry);
shrink_dcache_parent(dentry);
unlock_dentry(dentry);
dput(dentry);
/* now try to get rid of current dentry */
d_prune_aliases(inode);
goto restart;
}
}
spin_unlock(&dcache_lock);
}
static void prune_deathrow_one(struct ll_inode_info *lli)
{
struct inode *inode = ll_info2i(lli);
/* first, try to drop any dentries - they hold a ref on the inode */
if (S_ISDIR(inode->i_mode))
prune_dir_dentries(inode); else
d_prune_aliases(inode);
/* if somebody still uses it, leave it */
LASSERT(atomic_read(&inode->i_count) > 0);
if (atomic_read(&inode->i_count) > 1)
goto out;
CDEBUG(D_INODE, "inode %lu/%u(%d) looks a good candidate for prune\n",
inode->i_ino,inode->i_generation, atomic_read(&inode->i_count));
/* seems nobody uses it anymore */
inode->i_nlink = 0;
out:
iput(inode);
return;
}
static void prune_deathrow(struct ll_sb_info *sbi, int try)
{
struct ll_inode_info *lli;
int empty;
do {
if (need_resched() && try)
break;
if (try) {
if (!spin_trylock(&sbi->ll_deathrow_lock))
break;
} else {
spin_lock(&sbi->ll_deathrow_lock);
}
empty = 1;
lli = NULL;
if (!list_empty(&sbi->ll_deathrow)) {
lli = list_entry(sbi->ll_deathrow.next,
struct ll_inode_info,
lli_dead_list);
list_del_init(&lli->lli_dead_list);
if (!list_empty(&sbi->ll_deathrow))
empty = 0;
}
spin_unlock(&sbi->ll_deathrow_lock);
if (lli)
prune_deathrow_one(lli);
} while (empty == 0);
}
#else /* !HAVE_EXPORT___IGET */
#define prune_deathrow(sbi, try) do {} while (0)
#endif /* HAVE_EXPORT___IGET */
void client_common_put_super(struct super_block *sb)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
ENTRY;
#ifdef CONFIG_FS_POSIX_ACL
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
et_fini(&sbi->ll_et);
rct_fini(&sbi->ll_rct);
}
#endif
obd_cancel_unused(sbi->ll_dt_exp, NULL, 0, NULL);
ll_close_thread_shutdown(sbi->ll_lcq);
/* destroy inodes in deathrow */
prune_deathrow(sbi, 0);
list_del(&sbi->ll_conn_chain);
obd_fid_fini(sbi->ll_dt_exp);
obd_disconnect(sbi->ll_dt_exp);
sbi->ll_dt_exp = NULL;
lprocfs_unregister_mountpoint(sbi);
obd_fid_fini(sbi->ll_md_exp);
obd_disconnect(sbi->ll_md_exp);
sbi->ll_md_exp = NULL;
EXIT;
}
void ll_kill_super(struct super_block *sb)
{
struct ll_sb_info *sbi;
ENTRY;
/* not init sb ?*/
if (!(sb->s_flags & MS_ACTIVE))
return;
sbi = ll_s2sbi(sb);
/* we need restore s_dev from changed for clustred NFS before put_super
* because new kernels have cached s_dev and change sb->s_dev in
* put_super not affected real removing devices */
if (sbi)
sb->s_dev = sbi->ll_sdev_orig;
EXIT;
}
char *ll_read_opt(const char *opt, char *data)
{
char *value;
char *retval;
ENTRY;
CDEBUG(D_SUPER, "option: %s, data %s\n", opt, data);
if (strncmp(opt, data, strlen(opt)))
RETURN(NULL);
if ((value = strchr(data, '=')) == NULL)
RETURN(NULL);
value++;
OBD_ALLOC(retval, strlen(value) + 1);
if (!retval) {
CERROR("out of memory!\n");
RETURN(NULL);
}
memcpy(retval, value, strlen(value)+1);
CDEBUG(D_SUPER, "Assigned option: %s, value %s\n", opt, retval);
RETURN(retval);
}
static inline int ll_set_opt(const char *opt, char *data, int fl)
{
if (strncmp(opt, data, strlen(opt)) != 0)
return(0);
else
return(fl);}
/* non-client-specific mount options are parsed in lmd_parse */
static int ll_options(char *options, int *flags)
{
int tmp;
char *s1 = options, *s2;
ENTRY;
if (!options)
RETURN(0);
CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
while (*s1) {
CDEBUG(D_SUPER, "next opt=%s\n", s1);
tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
if (tmp) {
*flags &= ~tmp;
goto next;
}
tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
if (tmp) {
*flags &= ~tmp;
goto next;
}
tmp = ll_set_opt("acl", s1, LL_SBI_ACL);
if (tmp) {
/* Ignore deprecated mount option. The client will
* always try to mount with ACL support, whether this
* is used depends on whether server supports it. */
goto next;
}
tmp = ll_set_opt("noacl", s1, LL_SBI_ACL);
if (tmp) {
goto next;
}
tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
if (tmp) { *flags &= ~tmp;
goto next;
}
tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
if (tmp) {
*flags &= ~tmp;
goto next;
}
LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
s1);
RETURN(-EINVAL);
next:
/* Find next opt */
s2 = strchr(s1, ',');
if (s2 == NULL)
break;
s1 = s2 + 1;
}
RETURN(0);
}
void ll_lli_init(struct ll_inode_info *lli)
{
lli->lli_inode_magic = LLI_INODE_MAGIC;
sema_init(&lli->lli_size_sem, 1);
sema_init(&lli->lli_write_sem, 1);
lli->lli_flags = 0;
lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
spin_lock_init(&lli->lli_lock);
INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
INIT_LIST_HEAD(&lli->lli_close_list);
lli->lli_inode_magic = LLI_INODE_MAGIC;
sema_init(&lli->lli_och_sem, 1);
lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
lli->lli_mds_exec_och = NULL;
lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
lli->lli_open_fd_exec_count = 0;
INIT_LIST_HEAD(&lli->lli_dead_list);
lli->lli_remote_perms = NULL;
lli->lli_rmtperm_utime = 0;
sema_init(&lli->lli_rmtperm_sem, 1);
INIT_LIST_HEAD(&lli->lli_oss_capas);
}
int ll_fill_super(struct super_block *sb)
{
struct lustre_profile *lprof;
struct lustre_sb_info *lsi = s2lsi(sb);
struct ll_sb_info *sbi;
char *dt = NULL, *md = NULL;
char *profilenm = get_profile_name(sb);
struct config_llog_instance cfg = {0, };
char ll_instance[sizeof(sb) * 2 + 1];
int err;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
cfs_module_get();
/* client additional sb info */
lsi->lsi_llsbi = sbi = ll_init_sbi();
if (!sbi) { cfs_module_put();
RETURN(-ENOMEM);
}
err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
if (err)
GOTO(out_free, err);
/* Generate a string unique to this super, in case some joker tries
to mount the same fs at two mount points.
Use the address of the super itself.*/
sprintf(ll_instance, "%p", sb);
cfg.cfg_instance = ll_instance;
cfg.cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
/* set up client obds */
err = lustre_process_log(sb, profilenm, &cfg);
if (err < 0) {
CERROR("Unable to process log: %d\n", err);
GOTO(out_free, err);
}
lprof = class_get_profile(profilenm);
if (lprof == NULL) {
LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
" read from the MGS. Does that filesystem "
"exist?\n", profilenm);
GOTO(out_free, err = -EINVAL);
}
CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
lprof->lp_md, lprof->lp_dt);
OBD_ALLOC(dt, strlen(lprof->lp_dt) +
strlen(ll_instance) + 2);
if (!dt)
GOTO(out_free, err = -ENOMEM);
sprintf(dt, "%s-%s", lprof->lp_dt, ll_instance);
OBD_ALLOC(md, strlen(lprof->lp_md) +
strlen(ll_instance) + 2);
if (!md)
GOTO(out_free, err = -ENOMEM);
sprintf(md, "%s-%s", lprof->lp_md, ll_instance);
/* connections, registrations, sb setup */
err = client_common_fill_super(sb, md, dt);
out_free:
if (md)
OBD_FREE(md, strlen(md) + 1);
if (dt)
OBD_FREE(dt, strlen(dt) + 1);
if (err)
ll_put_super(sb);
else
LCONSOLE_WARN("Client %s has started\n", profilenm);
RETURN(err);
} /* ll_fill_super */
void ll_put_super(struct super_block *sb)
{
struct config_llog_instance cfg;
char ll_instance[sizeof(sb) * 2 + 1];
struct obd_device *obd;
struct lustre_sb_info *lsi = s2lsi(sb);
struct ll_sb_info *sbi = ll_s2sbi(sb);
char *profilenm = get_profile_name(sb);
int force = 1, next; ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
ll_print_capa_stat(sbi);
sprintf(ll_instance, "%p", sb);
cfg.cfg_instance = ll_instance;
lustre_end_log(sb, NULL, &cfg);
if (sbi->ll_md_exp) {
obd = class_exp2obd(sbi->ll_md_exp);
if (obd)
force = obd->obd_force;
}
/* We need to set force before the lov_disconnect in
lustre_common_put_super, since l_d cleans up osc's as well. */
if (force) {
next = 0;
while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
&next)) != NULL) {
obd->obd_force = force;
}
}
if (sbi->ll_lcq) {
/* Only if client_common_fill_super succeeded */
client_common_put_super(sb);
}
next = 0;
while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
class_manual_cleanup(obd);
}
if (profilenm)
class_del_profile(profilenm);
ll_free_sbi(sb);
lsi->lsi_llsbi = NULL;
lustre_common_put_super(sb);
LCONSOLE_WARN("client %s umount complete\n", ll_instance);
cfs_module_put();
EXIT;
} /* client_put_super */
#if defined(HAVE_REGISTER_CACHE) || defined(HAVE_SHRINKER_CACHE)
#if defined(HAVE_CACHE_RETURN_INT)
static int
#else
static void
#endif
ll_shrink_cache(int priority, unsigned int gfp_mask)
{
struct ll_sb_info *sbi;
int count = 0;
list_for_each_entry(sbi, &ll_super_blocks, ll_list)
count += llap_shrink_cache(sbi, priority);
#if defined(HAVE_CACHE_RETURN_INT)
return count;
#endif
}
struct cache_definition ll_cache_definition = {
.name = "llap_cache",
.shrink = ll_shrink_cache
};
#endif /* HAVE_REGISTER_CACHE || HAVE_SHRINKER_CACHE */
struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
{
struct inode *inode = NULL;
/* NOTE: we depend on atomic igrab() -bzzz */
lock_res_and_lock(lock);
if (lock->l_ast_data) {
struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
inode = igrab(lock->l_ast_data);
} else {
inode = lock->l_ast_data;
ldlm_lock_debug(NULL, inode->i_state & I_FREEING ?
D_INFO : D_WARNING,
lock, __FILE__, __func__, __LINE__,
"l_ast_data %p is bogus: magic %08x",
lock->l_ast_data, lli->lli_inode_magic);
inode = NULL;
}
}
unlock_res_and_lock(lock);
return inode;
}
static int null_if_equal(struct ldlm_lock *lock, void *data)
{
if (data == lock->l_ast_data) {
lock->l_ast_data = NULL;
if (lock->l_req_mode != lock->l_granted_mode)
LDLM_ERROR(lock,"clearing inode with ungranted lock");
}
return LDLM_ITER_CONTINUE;
}
void ll_clear_inode(struct inode *inode)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct ll_sb_info *sbi = ll_i2sbi(inode);
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
inode->i_generation, inode);
if (S_ISDIR(inode->i_mode)) {
/* these should have been cleared in ll_file_release */
LASSERT(lli->lli_sai == NULL);
LASSERT(lli->lli_opendir_key == NULL);
LASSERT(lli->lli_opendir_pid == 0);
}
ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
null_if_equal, inode);
LASSERT(!lli->lli_open_fd_write_count);
LASSERT(!lli->lli_open_fd_read_count);
LASSERT(!lli->lli_open_fd_exec_count);
if (lli->lli_mds_write_och)
ll_md_real_close(inode, FMODE_WRITE);
if (lli->lli_mds_exec_och)
ll_md_real_close(inode, FMODE_EXEC);
if (lli->lli_mds_read_och) ll_md_real_close(inode, FMODE_READ);
if (lli->lli_smd) {
obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
null_if_equal, inode);
obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
lli->lli_smd = NULL;
}
if (lli->lli_symlink_name) {
OBD_FREE(lli->lli_symlink_name,
strlen(lli->lli_symlink_name) + 1);
lli->lli_symlink_name = NULL;
}
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
LASSERT(lli->lli_posix_acl == NULL);
if (lli->lli_remote_perms) {
free_rmtperm_hash(lli->lli_remote_perms);
lli->lli_remote_perms = NULL;
}
}
#ifdef CONFIG_FS_POSIX_ACL
else if (lli->lli_posix_acl) {
LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
LASSERT(lli->lli_remote_perms == NULL);
posix_acl_release(lli->lli_posix_acl);
lli->lli_posix_acl = NULL;
}
#endif
lli->lli_inode_magic = LLI_INODE_DEAD;
#ifdef HAVE_EXPORT___IGET
spin_lock(&sbi->ll_deathrow_lock);
list_del_init(&lli->lli_dead_list);
spin_unlock(&sbi->ll_deathrow_lock);
#endif
ll_clear_inode_capas(inode);
EXIT;
}
int ll_md_setattr(struct inode *inode, struct md_op_data *op_data,
struct md_open_data **mod)
{
struct lustre_md md;
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *request = NULL;
int rc;
ENTRY;
op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
LUSTRE_OPC_ANY, NULL);
if (IS_ERR(op_data))
RETURN(PTR_ERR(op_data));
rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
&request, mod);
if (rc) {
ptlrpc_req_finished(request);
if (rc == -ENOENT) {
inode->i_nlink = 0;
/* Unlinked special device node? Or just a race?
* Pretend we done everything. */
if (!S_ISREG(inode->i_mode) &&
!S_ISDIR(inode->i_mode))
rc = inode_setattr(inode, &op_data->op_attr);
} else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
CERROR("md_setattr fails: rc = %d\n", rc); }
RETURN(rc);
}
rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
sbi->ll_md_exp, &md);
if (rc) {
ptlrpc_req_finished(request);
RETURN(rc);
}
/* We call inode_setattr to adjust timestamps.
* If there is at least some data in file, we cleared ATTR_SIZE
* above to avoid invoking vmtruncate, otherwise it is important
* to call vmtruncate in inode_setattr to update inode->i_size
* (bug 6196) */
rc = inode_setattr(inode, &op_data->op_attr);
/* Extract epoch data if obtained. */
op_data->op_handle = md.body->handle;
op_data->op_ioepoch = md.body->ioepoch;
ll_update_inode(inode, &md);
ptlrpc_req_finished(request);
RETURN(rc);
}
/* Close IO epoch and send Size-on-MDS attribute update. */
static int ll_setattr_done_writing(struct inode *inode,
struct md_op_data *op_data,
struct md_open_data *mod)
{
struct ll_inode_info *lli = ll_i2info(inode);
int rc = 0;
ENTRY;
LASSERT(op_data != NULL);
if (!S_ISREG(inode->i_mode))
RETURN(0);
CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
op_data->op_ioepoch, PFID(&lli->lli_fid));
op_data->op_flags = MF_EPOCH_CLOSE | MF_SOM_CHANGE;
rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
if (rc == -EAGAIN) {
/* MDS has instructed us to obtain Size-on-MDS attribute
* from OSTs and send setattr to back to MDS. */
rc = ll_sizeonmds_update(inode, mod, &op_data->op_handle,
op_data->op_ioepoch);
} else if (rc) {
CERROR("inode %lu mdc truncate failed: rc = %d\n",
inode->i_ino, rc);
}
RETURN(rc);
}
static int ll_setattr_do_truncate(struct inode *inode, loff_t new_size)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ll_inode_info *lli = ll_i2info(inode);
struct lov_stripe_md *lsm = lli->lli_smd;
int rc;
ldlm_policy_data_t policy = { .l_extent = {new_size,
OBD_OBJECT_EOF } };
struct lustre_handle lockh = { 0 };
int local_lock = 0; /* 0 - no local lock;
* 1 - lock taken by lock_extent;
* 2 - by obd_match*/ int ast_flags;
int err;
ENTRY;
UNLOCK_INODE_MUTEX(inode);
UP_WRITE_I_ALLOC_SEM(inode);
if (sbi->ll_lockless_truncate_enable &&
(sbi->ll_lco.lco_flags & OBD_CONNECT_TRUNCLOCK)) {
ast_flags = LDLM_FL_BLOCK_GRANTED;
rc = obd_match(sbi->ll_dt_exp, lsm, LDLM_EXTENT,
&policy, LCK_PW, &ast_flags, inode, &lockh);
if (rc > 0) {
local_lock = 2;
rc = 0;
} else if (rc == 0) {
rc = ll_file_punch(inode, new_size, 1);
}
} else {
/* XXX when we fix the AST intents to pass the discard-range
* XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
* XXX here. */
ast_flags = (new_size == 0) ? LDLM_AST_DISCARD_DATA : 0;
rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy,
&lockh, ast_flags);
if (likely(rc == 0))
local_lock = 1;
}
LOCK_INODE_MUTEX(inode);
DOWN_WRITE_I_ALLOC_SEM(inode);
if (likely(rc == 0)) {
/* Only ll_inode_size_lock is taken at this level.
* lov_stripe_lock() is grabbed by ll_truncate() only over
* call to obd_adjust_kms(). If vmtruncate returns 0, then
* ll_truncate dropped ll_inode_size_lock() */
ll_inode_size_lock(inode, 0);
if (!local_lock) {
spin_lock(&lli->lli_lock);
lli->lli_flags |= LLIF_SRVLOCK;
spin_unlock(&lli->lli_lock);
}
rc = vmtruncate(inode, new_size);
if (!local_lock) {
spin_lock(&lli->lli_lock);
lli->lli_flags &= ~LLIF_SRVLOCK;
spin_unlock(&lli->lli_lock);
}
if (rc != 0) {
LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
ll_inode_size_unlock(inode, 0);
}
}
if (local_lock) {
if (local_lock == 2)
err = obd_cancel(sbi->ll_dt_exp, lsm, LCK_PW, &lockh);
else
err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
if (unlikely(err != 0)){
CERROR("extent unlock failed: err=%d,"
" unlock method =%d\n", err, local_lock);
if (rc == 0)
rc = err;
}
}
RETURN(rc);
}
/* If this inode has objects allocated to it (lsm != NULL), then the OST
* object(s) determine the file size and mtime. Otherwise, the MDS will
* keep these values until such a time that objects are allocated for it.
* We do the MDS operations first, as it is checking permissions for us.
* We don't to the MDS RPC if there is nothing that we want to store there,
* otherwise there is no harm in updating mtime/atime on the MDS if we are
* going to do an RPC anyways.
*
* If we are doing a truncate, we will send the mtime and ctime updates
* to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
* I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
* at the same time.
*/
int ll_setattr_raw(struct inode *inode, struct iattr *attr)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct lov_stripe_md *lsm = lli->lli_smd;
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct md_op_data *op_data = NULL;
struct md_open_data *mod = NULL;
int ia_valid = attr->ia_valid;
int rc = 0, rc1 = 0;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu valid %x\n", inode->i_ino,
attr->ia_valid);
ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETATTR, 1);
if (ia_valid & ATTR_SIZE) {
if (attr->ia_size > ll_file_maxbytes(inode)) {
CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
attr->ia_size, ll_file_maxbytes(inode));
RETURN(-EFBIG);
}
attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
}
/* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
RETURN(-EPERM);
}
/* We mark all of the fields "set" so MDS/OST does not re-set them */
if (attr->ia_valid & ATTR_CTIME) {
attr->ia_ctime = CURRENT_TIME;
attr->ia_valid |= ATTR_CTIME_SET;
}
if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
attr->ia_atime = CURRENT_TIME;
attr->ia_valid |= ATTR_ATIME_SET;
}
if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
attr->ia_mtime = CURRENT_TIME;
attr->ia_valid |= ATTR_MTIME_SET;
}
if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
/* To avoid stale mtime on mds, obtain it from ost and send
to mds. */
rc = ll_glimpse_size(inode, 0);
if (rc)
RETURN(rc);
attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
attr->ia_mtime = inode->i_mtime;
}
if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n", LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
cfs_time_current_sec());
/* NB: ATTR_SIZE will only be set after this point if the size
* resides on the MDS, ie, this file has no objects. */
if (lsm)
attr->ia_valid &= ~ATTR_SIZE;
/* We always do an MDS RPC, even if we're only changing the size;
* only the MDS knows whether truncate() should fail with -ETXTBUSY */
OBD_ALLOC_PTR(op_data);
if (op_data == NULL)
RETURN(-ENOMEM);
memcpy(&op_data->op_attr, attr, sizeof(*attr));
/* Open epoch for truncate. */
if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
(ia_valid & ATTR_SIZE))
op_data->op_flags = MF_EPOCH_OPEN;
rc = ll_md_setattr(inode, op_data, &mod);
if (rc)
GOTO(out, rc);
if (op_data->op_ioepoch)
CDEBUG(D_INODE, "Epoch "LPU64" opened on "DFID" for "
"truncate\n", op_data->op_ioepoch, PFID(&lli->lli_fid));
if (!lsm || !S_ISREG(inode->i_mode)) {
CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
GOTO(out, rc = 0);
}
/* We really need to get our PW lock before we change inode->i_size.
* If we don't we can race with other i_size updaters on our node, like
* ll_file_read. We can also race with i_size propogation to other
* nodes through dirtying and writeback of final cached pages. This
* last one is especially bad for racing o_append users on other
* nodes. */
if (ia_valid & ATTR_SIZE) {
rc = ll_setattr_do_truncate(inode, attr->ia_size);
} else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
obd_flag flags;
struct obd_info oinfo = { { { 0 } } };
struct obdo *oa;
CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
inode->i_ino, LTIME_S(attr->ia_mtime));
OBDO_ALLOC(oa);
if (oa) {
oa->o_id = lsm->lsm_object_id;
oa->o_gr = lsm->lsm_object_gr;
oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
flags = OBD_MD_FLTYPE | OBD_MD_FLATIME |
OBD_MD_FLMTIME | OBD_MD_FLCTIME |
OBD_MD_FLFID | OBD_MD_FLGENER |
OBD_MD_FLGROUP;
obdo_from_inode(oa, inode, flags);
oinfo.oi_oa = oa;
oinfo.oi_md = lsm;
oinfo.oi_capa = ll_mdscapa_get(inode);
/* XXX: this looks unnecessary now. */
rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL); capa_put(oinfo.oi_capa);
if (rc)
CERROR("obd_setattr_async fails: rc=%d\n", rc);
OBDO_FREE(oa);
} else {
rc = -ENOMEM;
}
}
EXIT;
out:
if (op_data) {
if (op_data->op_ioepoch)
rc1 = ll_setattr_done_writing(inode, op_data, mod);
ll_finish_md_op_data(op_data);
}
return rc ? rc : rc1;
}
int ll_setattr(struct dentry *de, struct iattr *attr)
{
if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
(ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
return ll_setattr_raw(de->d_inode, attr);
}
int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
__u64 max_age, __u32 flags)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct obd_statfs obd_osfs;
int rc;
ENTRY;
rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, flags);
if (rc) {
CERROR("md_statfs fails: rc = %d\n", rc);
RETURN(rc);
}
osfs->os_type = sb->s_magic;
CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
&obd_osfs, max_age, flags);
if (rc) {
CERROR("obd_statfs fails: rc = %d\n", rc);
RETURN(rc);
}
CDEBUG(D_SUPER, "OSC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
obd_osfs.os_files);
osfs->os_bsize = obd_osfs.os_bsize;
osfs->os_blocks = obd_osfs.os_blocks;
osfs->os_bfree = obd_osfs.os_bfree;
osfs->os_bavail = obd_osfs.os_bavail;
/* If we don't have as many objects free on the OST as inodes
* on the MDS, we reduce the total number of inodes to
* compensate, so that the "inodes in use" number is correct.
*/
if (obd_osfs.os_ffree < osfs->os_ffree) {
osfs->os_files = (osfs->os_files - osfs->os_ffree) +
obd_osfs.os_ffree;
osfs->os_ffree = obd_osfs.os_ffree; }
RETURN(rc);
}
#ifndef HAVE_STATFS_DENTRY_PARAM
int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
{
#else
int ll_statfs(struct dentry *de, struct kstatfs *sfs)
{
struct super_block *sb = de->d_sb;
#endif
struct obd_statfs osfs;
int rc;
CDEBUG(D_VFSTRACE, "VFS Op: at "LPU64" jiffies\n", get_jiffies_64());
ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
/* For now we will always get up-to-date statfs values, but in the
* future we may allow some amount of caching on the client (e.g.
* from QOS or lprocfs updates). */
rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - 1, 0);
if (rc)
return rc;
statfs_unpack(sfs, &osfs);
/* We need to downshift for all 32-bit kernels, because we can't
* tell if the kernel is being called via sys_statfs64() or not.
* Stop before overflowing f_bsize - in which case it is better
* to just risk EOVERFLOW if caller is using old sys_statfs(). */
if (sizeof(long) < 8) {
while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
sfs->f_bsize <<= 1;
osfs.os_blocks >>= 1;
osfs.os_bfree >>= 1;
osfs.os_bavail >>= 1;
}
}
sfs->f_blocks = osfs.os_blocks;
sfs->f_bfree = osfs.os_bfree;
sfs->f_bavail = osfs.os_bavail;
return 0;
}
void ll_inode_size_lock(struct inode *inode, int lock_lsm)
{
struct ll_inode_info *lli;
struct lov_stripe_md *lsm;
lli = ll_i2info(inode);
LASSERT(lli->lli_size_sem_owner != current);
down(&lli->lli_size_sem);
LASSERT(lli->lli_size_sem_owner == NULL);
lli->lli_size_sem_owner = current;
lsm = lli->lli_smd;
LASSERTF(lsm != NULL || lock_lsm == 0, "lsm %p, lock_lsm %d\n",
lsm, lock_lsm);
if (lock_lsm)
lov_stripe_lock(lsm);
}
void ll_inode_size_unlock(struct inode *inode, int unlock_lsm)
{
struct ll_inode_info *lli;
struct lov_stripe_md *lsm;
lli = ll_i2info(inode);
lsm = lli->lli_smd;
LASSERTF(lsm != NULL || unlock_lsm == 0, "lsm %p, lock_lsm %d\n",
lsm, unlock_lsm);
if (unlock_lsm)
lov_stripe_unlock(lsm);
LASSERT(lli->lli_size_sem_owner == current);
lli->lli_size_sem_owner = NULL;
up(&lli->lli_size_sem);
}
static void ll_replace_lsm(struct inode *inode, struct lov_stripe_md *lsm)
{
struct ll_inode_info *lli = ll_i2info(inode);
dump_lsm(D_INODE, lsm);
dump_lsm(D_INODE, lli->lli_smd);
LASSERTF(lsm->lsm_magic == LOV_MAGIC_JOIN,
"lsm must be joined lsm %p\n", lsm);
obd_free_memmd(ll_i2dtexp(inode), &lli->lli_smd);
CDEBUG(D_INODE, "replace lsm %p to lli_smd %p for inode %lu%u(%p)\n",
lsm, lli->lli_smd, inode->i_ino, inode->i_generation, inode);
lli->lli_smd = lsm;
lli->lli_maxbytes = lsm->lsm_maxbytes;
if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
}
void ll_update_inode(struct inode *inode, struct lustre_md *md)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct mdt_body *body = md->body;
struct lov_stripe_md *lsm = md->lsm;
struct ll_sb_info *sbi = ll_i2sbi(inode);
LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
if (lsm != NULL) {
if (lli->lli_smd == NULL) {
if (lsm->lsm_magic != LOV_MAGIC &&
lsm->lsm_magic != LOV_MAGIC_JOIN) {
dump_lsm(D_ERROR, lsm);
LBUG();
}
CDEBUG(D_INODE, "adding lsm %p to inode %lu/%u(%p)\n",
lsm, inode->i_ino, inode->i_generation, inode);
/* ll_inode_size_lock() requires it is only called
* with lli_smd != NULL or lock_lsm == 0 or we can
* race between lock/unlock. bug 9547 */
lli->lli_smd = lsm;
lli->lli_maxbytes = lsm->lsm_maxbytes;
if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
} else {
if (lli->lli_smd->lsm_magic == lsm->lsm_magic &&
lli->lli_smd->lsm_stripe_count ==
lsm->lsm_stripe_count) {
if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
CERROR("lsm mismatch for inode %ld\n",
inode->i_ino);
CERROR("lli_smd:\n");
dump_lsm(D_ERROR, lli->lli_smd);
CERROR("lsm:\n");
dump_lsm(D_ERROR, lsm);
LBUG();
}
} else
ll_replace_lsm(inode, lsm);
}
if (lli->lli_smd != lsm)
obd_free_memmd(ll_i2dtexp(inode), &lsm); }
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
if (body->valid & OBD_MD_FLRMTPERM)
ll_update_remote_perm(inode, md->remote_perm);
}
#ifdef CONFIG_FS_POSIX_ACL
else if (body->valid & OBD_MD_FLACL) {
spin_lock(&lli->lli_lock);
if (lli->lli_posix_acl)
posix_acl_release(lli->lli_posix_acl);
lli->lli_posix_acl = md->posix_acl;
spin_unlock(&lli->lli_lock);
}
#endif
inode->i_ino = ll_fid_build_ino(sbi, &body->fid1);
if (body->valid & OBD_MD_FLATIME &&
body->atime > LTIME_S(inode->i_atime))
LTIME_S(inode->i_atime) = body->atime;
/* mtime is always updated with ctime, but can be set in past.
As write and utime(2) may happen within 1 second, and utime's
mtime has a priority over write's one, so take mtime from mds
for the same ctimes. */
if (body->valid & OBD_MD_FLCTIME &&
body->ctime >= LTIME_S(inode->i_ctime)) {
LTIME_S(inode->i_ctime) = body->ctime;
if (body->valid & OBD_MD_FLMTIME) {
CDEBUG(D_INODE, "setting ino %lu mtime "
"from %lu to "LPU64"\n", inode->i_ino,
LTIME_S(inode->i_mtime), body->mtime);
LTIME_S(inode->i_mtime) = body->mtime;
}
}
if (body->valid & OBD_MD_FLMODE)
inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
if (body->valid & OBD_MD_FLTYPE)
inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
if (S_ISREG(inode->i_mode)) {
inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, LL_MAX_BLKSIZE_BITS);
} else {
inode->i_blkbits = inode->i_sb->s_blocksize_bits;
}
#ifdef HAVE_INODE_BLKSIZE
inode->i_blksize = 1<<inode->i_blkbits;
#endif
if (body->valid & OBD_MD_FLUID)
inode->i_uid = body->uid;
if (body->valid & OBD_MD_FLGID)
inode->i_gid = body->gid;
if (body->valid & OBD_MD_FLFLAGS)
inode->i_flags = ll_ext_to_inode_flags(body->flags);
if (body->valid & OBD_MD_FLNLINK)
inode->i_nlink = body->nlink;
if (body->valid & OBD_MD_FLRDEV)
inode->i_rdev = old_decode_dev(body->rdev);
if (body->valid & OBD_MD_FLID) {
/* FID shouldn't be changed! */
if (fid_is_sane(&lli->lli_fid)) {
LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
"Trying to change FID "DFID
" to the "DFID", inode %lu/%u(%p)\n",
PFID(&lli->lli_fid), PFID(&body->fid1),
inode->i_ino, inode->i_generation, inode);
} else
lli->lli_fid = body->fid1;
}
LASSERT(fid_seq(&lli->lli_fid) != 0);
if (body->valid & OBD_MD_FLSIZE) {
if ((ll_i2mdexp(inode)->exp_connect_flags & OBD_CONNECT_SOM) &&
S_ISREG(inode->i_mode) && lli->lli_smd) {
struct lustre_handle lockh;
ldlm_mode_t mode;
/* As it is possible a blocking ast has been processed
* by this time, we need to check there is an UPDATE
* lock on the client and set LLIF_MDS_SIZE_LOCK holding
* it. */
mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
&lockh);
if (mode) {
if (lli->lli_flags & (LLIF_DONE_WRITING |
LLIF_EPOCH_PENDING |
LLIF_SOM_DIRTY)) {
CERROR("ino %lu flags %lu still has "
"size authority! do not trust "
"the size got from MDS\n",
inode->i_ino, lli->lli_flags);
} else {
/* Use old size assignment to avoid
* deadlock bz14138 & bz14326 */
inode->i_size = body->size;
lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
}
ldlm_lock_decref(&lockh, mode);
}
} else {
/* Use old size assignment to avoid
* deadlock bz14138 & bz14326 */
inode->i_size = body->size;
}
if (body->valid & OBD_MD_FLBLOCKS)
inode->i_blocks = body->blocks;
}
if (body->valid & OBD_MD_FLMDSCAPA) {
LASSERT(md->mds_capa);
ll_add_capa(inode, md->mds_capa);
}
if (body->valid & OBD_MD_FLOSSCAPA) {
LASSERT(md->oss_capa);
ll_add_capa(inode, md->oss_capa);
}
}
static struct backing_dev_info ll_backing_dev_info = {
.ra_pages = 0, /* No readahead */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12))
.capabilities = 0, /* Does contribute to dirty memory */
#else
.memory_backed = 0, /* Does contribute to dirty memory */
#endif
};
void ll_read_inode2(struct inode *inode, void *opaque)
{
struct lustre_md *md = opaque;
struct ll_inode_info *lli = ll_i2info(inode);
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
inode->i_ino, inode->i_generation, inode);
ll_lli_init(lli);
LASSERT(!lli->lli_smd);
/* Core attributes from the MDS first. This is a new inode, and
* the VFS doesn't zero times in the core inode so we have to do
* it ourselves. They will be overwritten by either MDS or OST
* attributes - we just need to make sure they aren't newer. */
LTIME_S(inode->i_mtime) = 0;
LTIME_S(inode->i_atime) = 0;
LTIME_S(inode->i_ctime) = 0;
inode->i_rdev = 0;
ll_update_inode(inode, md);
/* OIDEBUG(inode); */
if (S_ISREG(inode->i_mode)) {
struct ll_sb_info *sbi = ll_i2sbi(inode);
inode->i_op = &ll_file_inode_operations;
inode->i_fop = sbi->ll_fop;
inode->i_mapping->a_ops = &ll_aops;
EXIT;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &ll_dir_inode_operations;
inode->i_fop = &ll_dir_operations;
inode->i_mapping->a_ops = &ll_dir_aops;
EXIT;
} else if (S_ISLNK(inode->i_mode)) {
inode->i_op = &ll_fast_symlink_inode_operations;
EXIT;
} else {
inode->i_op = &ll_special_inode_operations;
init_special_inode(inode, inode->i_mode,
kdev_t_to_nr(inode->i_rdev));
/* initializing backing dev info. */
inode->i_mapping->backing_dev_info = &ll_backing_dev_info;
EXIT;
}
}
void ll_delete_inode(struct inode *inode)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
int rc;
ENTRY;
rc = obd_fid_delete(sbi->ll_md_exp, ll_inode2fid(inode));
if (rc) {
CERROR("fid_delete() failed, rc %d\n", rc);
}
truncate_inode_pages(&inode->i_data, 0);
clear_inode(inode);
EXIT;
}
int ll_iocontrol(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *req = NULL;
int rc, flags = 0;
ENTRY;
switch(cmd) {
case EXT3_IOC_GETFLAGS: {
struct mdt_body *body;
struct obd_capa *oc;
oc = ll_mdscapa_get(inode);
rc = md_getattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
OBD_MD_FLFLAGS, 0, &req);
capa_put(oc);
if (rc) {
CERROR("failure %d inode %lu\n", rc, inode->i_ino);
RETURN(-abs(rc));
}
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
flags = body->flags;
ptlrpc_req_finished(req);
RETURN(put_user(flags, (int *)arg));
}
case EXT3_IOC_SETFLAGS: {
struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
struct obd_info oinfo = { { { 0 } } };
struct md_op_data *op_data;
if (get_user(flags, (int *)arg))
RETURN(-EFAULT);
oinfo.oi_md = lsm;
OBDO_ALLOC(oinfo.oi_oa);
if (!oinfo.oi_oa)
RETURN(-ENOMEM);
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
LUSTRE_OPC_ANY, NULL);
if (IS_ERR(op_data))
RETURN(PTR_ERR(op_data));
((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
rc = md_setattr(sbi->ll_md_exp, op_data,
NULL, 0, NULL, 0, &req, NULL);
ll_finish_md_op_data(op_data);
ptlrpc_req_finished(req);
if (rc || lsm == NULL) {
OBDO_FREE(oinfo.oi_oa);
RETURN(rc);
}
oinfo.oi_oa->o_id = lsm->lsm_object_id;
oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
oinfo.oi_oa->o_flags = flags;
oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
OBD_MD_FLGROUP;
oinfo.oi_capa = ll_mdscapa_get(inode);
obdo_from_inode(oinfo.oi_oa, inode,
OBD_MD_FLFID | OBD_MD_FLGENER);
rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
capa_put(oinfo.oi_capa);
OBDO_FREE(oinfo.oi_oa);
if (rc) {
if (rc != -EPERM && rc != -EACCES)
CERROR("md_setattr_async fails: rc = %d\n", rc);
RETURN(rc);
}
inode->i_flags = ll_ext_to_inode_flags(flags |
MDS_BFLAG_EXT_FLAGS);
RETURN(0);
}
default:
RETURN(-ENOSYS); }
RETURN(0);
}
int ll_flush_ctx(struct inode *inode)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
CDEBUG(D_SEC, "flush context for user %d\n", current->uid);
obd_set_info_async(sbi->ll_md_exp,
sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
0, NULL, NULL);
obd_set_info_async(sbi->ll_dt_exp,
sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
0, NULL, NULL);
return 0;
}
/* umount -f client means force down, don't save state */
#ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
void ll_umount_begin(struct vfsmount *vfsmnt, int flags)
{
struct super_block *sb = vfsmnt->mnt_sb;
#else
void ll_umount_begin(struct super_block *sb)
{
#endif
struct lustre_sb_info *lsi = s2lsi(sb);
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct obd_device *obd;
struct obd_ioctl_data ioc_data = { 0 };
ENTRY;
#ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
if (!(flags & MNT_FORCE)) {
EXIT;
return;
}
#endif
/* Tell the MGC we got umount -f */
lsi->lsi_flags |= LSI_UMOUNT_FORCE;
CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
sb->s_count, atomic_read(&sb->s_active));
obd = class_exp2obd(sbi->ll_md_exp);
if (obd == NULL) {
CERROR("Invalid MDC connection handle "LPX64"\n",
sbi->ll_md_exp->exp_handle.h_cookie);
EXIT;
return;
}
obd->obd_force = 1;
obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, sizeof ioc_data,
&ioc_data, NULL);
obd = class_exp2obd(sbi->ll_dt_exp);
if (obd == NULL) {
CERROR("Invalid LOV connection handle "LPX64"\n",
sbi->ll_dt_exp->exp_handle.h_cookie);
EXIT;
return;
}
obd->obd_force = 1;
obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, sizeof ioc_data,
&ioc_data, NULL);
/* Really, we'd like to wait until there are no requests outstanding,
* and then continue. For now, we just invalidate the requests,
* schedule, and hope.
*/
schedule();
EXIT;
}
int ll_remount_fs(struct super_block *sb, int *flags, char *data)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
int err;
__u32 read_only;
if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
read_only = *flags & MS_RDONLY;
err = obd_set_info_async(sbi->ll_md_exp,
sizeof(KEY_READ_ONLY),
KEY_READ_ONLY, sizeof(read_only),
&read_only, NULL);
if (err) {
CERROR("Failed to change the read-only flag during "
"remount: %d\n", err);
return err;
}
if (read_only)
sb->s_flags |= MS_RDONLY;
else
sb->s_flags &= ~MS_RDONLY;
}
return 0;
}
int ll_prep_inode(struct inode **inode,
struct ptlrpc_request *req,
struct super_block *sb)
{
struct ll_sb_info *sbi = NULL;
struct lustre_md md;
int rc = 0;
ENTRY;
LASSERT(*inode || sb);
sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
prune_deathrow(sbi, 1);
memset(&md, 0, sizeof(struct lustre_md));
rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
sbi->ll_md_exp, &md);
if (rc)
RETURN(rc);
if (*inode) {
ll_update_inode(*inode, &md);
} else {
LASSERT(sb != NULL);
/*
* At this point server returns to client's same fid as client
* generated for creating. So using ->fid1 is okay here.
*/
LASSERT(fid_is_sane(&md.body->fid1));
*inode = ll_iget(sb, ll_fid_build_ino(sbi, &md.body->fid1), &md);
if (*inode == NULL || is_bad_inode(*inode)) {
if (md.lsm)
obd_free_memmd(sbi->ll_dt_exp, &md.lsm);#ifdef CONFIG_FS_POSIX_ACL
if (md.posix_acl) {
posix_acl_release(md.posix_acl);
md.posix_acl = NULL;
}
#endif
rc = -ENOMEM;
CERROR("new_inode -fatal: rc %d\n", rc);
GOTO(out, rc);
}
}
rc = obd_checkmd(sbi->ll_dt_exp, sbi->ll_md_exp,
ll_i2info(*inode)->lli_smd);
out:
md_free_lustre_md(sbi->ll_md_exp, &md);
RETURN(rc);
}
char *llap_origins[] = {
[LLAP_ORIGIN_UNKNOWN] = "--",
[LLAP_ORIGIN_READPAGE] = "rp",
[LLAP_ORIGIN_READAHEAD] = "ra",
[LLAP_ORIGIN_COMMIT_WRITE] = "cw",
[LLAP_ORIGIN_WRITEPAGE] = "wp",
[LLAP_ORIGIN_LOCKLESS_IO] = "ls"
};
struct ll_async_page *llite_pglist_next_llap(struct list_head *head,
struct list_head *list)
{
struct ll_async_page *llap;
struct list_head *pos;
list_for_each(pos, list) {
if (pos == head)
return NULL;
llap = list_entry(pos, struct ll_async_page, llap_pglist_item);
if (llap->llap_page == NULL)
continue;
return llap;
}
LBUG();
return NULL;
}
int ll_obd_statfs(struct inode *inode, void *arg)
{
struct ll_sb_info *sbi = NULL;
struct obd_export *exp;
char *buf = NULL;
struct obd_ioctl_data *data = NULL;
__u32 type;
int len = 0, rc;
if (!inode || !(sbi = ll_i2sbi(inode)))
GOTO(out_statfs, rc = -EINVAL);
rc = obd_ioctl_getdata(&buf, &len, arg);
if (rc)
GOTO(out_statfs, rc);
data = (void*)buf;
if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
!data->ioc_pbuf1 || !data->ioc_pbuf2)
GOTO(out_statfs, rc = -EINVAL);
memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
if (type == LL_STATFS_MDC)
exp = sbi->ll_md_exp; else if (type == LL_STATFS_LOV)
exp = sbi->ll_dt_exp;
else
GOTO(out_statfs, rc = -ENODEV);
rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
if (rc)
GOTO(out_statfs, rc);
out_statfs:
if (buf)
obd_ioctl_freedata(buf, len);
return rc;
}
int ll_process_config(struct lustre_cfg *lcfg)
{
char *ptr;
void *sb;
struct lprocfs_static_vars lvars;
unsigned long x;
int rc = 0;
lprocfs_llite_init_vars(&lvars);
/* The instance name contains the sb: lustre-client-aacfe000 */
ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
if (!ptr || !*(++ptr))
return -EINVAL;
if (sscanf(ptr, "%lx", &x) != 1)
return -EINVAL;
sb = (void *)x;
/* This better be a real Lustre superblock! */
LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
/* Note we have not called client_common_fill_super yet, so
proc fns must be able to handle that! */
rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
lcfg, sb);
return(rc);
}
/* this function prepares md_op_data hint for passing ot down to MD stack. */
struct md_op_data * ll_prep_md_op_data(struct md_op_data *op_data,
struct inode *i1, struct inode *i2,
const char *name, int namelen,
int mode, __u32 opc, void *data)
{
LASSERT(i1 != NULL);
if (namelen > ll_i2sbi(i1)->ll_namelen)
return ERR_PTR(-ENAMETOOLONG);
if (op_data == NULL)
OBD_ALLOC_PTR(op_data);
if (op_data == NULL)
return ERR_PTR(-ENOMEM);
ll_i2gids(op_data->op_suppgids, i1, i2);
op_data->op_fid1 = *ll_inode2fid(i1);
op_data->op_capa1 = ll_mdscapa_get(i1);
if (i2) {
op_data->op_fid2 = *ll_inode2fid(i2);
op_data->op_capa2 = ll_mdscapa_get(i2);
} else {
fid_zero(&op_data->op_fid2);
op_data->op_capa2 = NULL;
}
op_data->op_name = name;
op_data->op_namelen = namelen;
op_data->op_mode = mode;
op_data->op_mod_time = cfs_time_current_sec();
op_data->op_fsuid = current->fsuid;
op_data->op_fsgid = current->fsgid;
op_data->op_cap = current->cap_effective;
op_data->op_bias = MDS_CHECK_SPLIT;
op_data->op_opc = opc;
op_data->op_mds = 0;
op_data->op_data = data;
return op_data;
}
void ll_finish_md_op_data(struct md_op_data *op_data)
{
capa_put(op_data->op_capa1);
capa_put(op_data->op_capa2);
OBD_FREE_PTR(op_data);
}