* 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/
#include <obd.h>
#include <lustre_dlm.h>
-#include <lustre_lite.h>
#include <lustre_mdc.h>
#include <linux/pagemap.h>
#include <linux/file.h>
#include "cl_object.h"
-#include "lclient.h"
#include "llite_internal.h"
+#include "vvp_internal.h"
static const struct cl_lock_descr whole_file = {
.cld_start = 0,
};
/*
- * Check whether file has possible unwriten pages.
+ * Check whether file has possible unwritten pages.
*
* \retval 1 file is mmap-ed or has dirty pages
* 0 otherwise
blkcnt_t dirty_cnt(struct inode *inode)
{
blkcnt_t cnt = 0;
- struct ccc_object *vob = cl_inode2ccc(inode);
+ struct vvp_object *vob = cl_inode2vvp(inode);
void *results[1];
if (inode->i_mapping != NULL)
cnt += radix_tree_gang_lookup_tag(&inode->i_mapping->page_tree,
results, 0, 1,
PAGECACHE_TAG_DIRTY);
- if (cnt == 0 && atomic_read(&vob->cob_mmap_cnt) > 0)
+ if (cnt == 0 && atomic_read(&vob->vob_mmap_cnt) > 0)
cnt = 1;
return (cnt > 0) ? 1 : 0;
}
int cl_glimpse_lock(const struct lu_env *env, struct cl_io *io,
- struct inode *inode, struct cl_object *clob, int agl)
+ struct inode *inode, struct cl_object *clob, int agl)
{
- struct cl_lock_descr *descr = &ccc_env_info(env)->cti_descr;
- struct cl_inode_info *lli = cl_i2info(inode);
+ struct ll_inode_info *lli = ll_i2info(inode);
const struct lu_fid *fid = lu_object_fid(&clob->co_lu);
- struct ccc_io *cio = ccc_env_io(env);
- struct cl_lock *lock;
int result;
ENTRY;
result = 0;
- if (!(lli->lli_flags & LLIF_MDS_SIZE_LOCK)) {
- CDEBUG(D_DLMTRACE, "Glimpsing inode "DFID"\n", PFID(fid));
- if (lli->lli_has_smd) {
- /* NOTE: this looks like DLM lock request, but it may
- * not be one. Due to CEF_ASYNC flag (translated
- * to LDLM_FL_HAS_INTENT by osc), this is
- * glimpse request, that won't revoke any
- * conflicting DLM locks held. Instead,
- * ll_glimpse_callback() will be called on each
- * client holding a DLM lock against this file,
- * and resulting size will be returned for each
- * stripe. DLM lock on [0, EOF] is acquired only
- * if there were no conflicting locks. If there
- * were conflicting locks, enqueuing or waiting
- * fails with -ENAVAIL, but valid inode
- * attributes are returned anyway. */
- *descr = whole_file;
- descr->cld_obj = clob;
- descr->cld_mode = CLM_PHANTOM;
- descr->cld_enq_flags = CEF_ASYNC | CEF_MUST;
- if (agl)
- descr->cld_enq_flags |= CEF_AGL;
- cio->cui_glimpse = 1;
- /*
- * CEF_ASYNC is used because glimpse sub-locks cannot
- * deadlock (because they never conflict with other
- * locks) and, hence, can be enqueued out-of-order.
- *
- * CEF_MUST protects glimpse lock from conversion into
- * a lockless mode.
- */
- lock = cl_lock_request(env, io, descr, "glimpse",
- current);
- cio->cui_glimpse = 0;
- if (lock == NULL)
- RETURN(0);
+ CDEBUG(D_DLMTRACE, "Glimpsing inode "DFID"\n", PFID(fid));
+ if (lli->lli_has_smd) {
+ struct cl_lock *lock = vvp_env_lock(env);
+ struct cl_lock_descr *descr = &lock->cll_descr;
- if (IS_ERR(lock))
- RETURN(PTR_ERR(lock));
+ /* NOTE: this looks like DLM lock request, but it may
+ * not be one. Due to CEF_ASYNC flag (translated
+ * to LDLM_FL_HAS_INTENT by osc), this is
+ * glimpse request, that won't revoke any
+ * conflicting DLM locks held. Instead,
+ * ll_glimpse_callback() will be called on each
+ * client holding a DLM lock against this file,
+ * and resulting size will be returned for each
+ * stripe. DLM lock on [0, EOF] is acquired only
+ * if there were no conflicting locks. If there
+ * were conflicting locks, enqueuing or waiting
+ * fails with -ENAVAIL, but valid inode
+ * attributes are returned anyway. */
+ *descr = whole_file;
+ descr->cld_obj = clob;
+ descr->cld_mode = CLM_READ;
+ descr->cld_enq_flags = CEF_ASYNC | CEF_MUST;
+ if (agl)
+ descr->cld_enq_flags |= CEF_AGL;
+ /*
+ * CEF_ASYNC is used because glimpse sub-locks cannot
+ * deadlock (because they never conflict with other
+ * locks) and, hence, can be enqueued out-of-order.
+ *
+ * CEF_MUST protects glimpse lock from conversion into
+ * a lockless mode.
+ */
+ result = cl_lock_request(env, io, lock);
+ if (result < 0)
+ RETURN(result);
- LASSERT(agl == 0);
- result = cl_wait(env, lock);
- if (result == 0) {
- cl_merge_lvb(env, inode);
- if (cl_isize_read(inode) > 0 &&
- inode->i_blocks == 0) {
- /*
- * LU-417: Add dirty pages block count
- * lest i_blocks reports 0, some "cp" or
- * "tar" may think it's a completely
- * sparse file and skip it.
- */
- inode->i_blocks = dirty_cnt(inode);
- }
- cl_unuse(env, lock);
+ if (!agl) {
+ ll_merge_attr(env, inode);
+ if (i_size_read(inode) > 0 && inode->i_blocks == 0) {
+ /*
+ * LU-417: Add dirty pages block count
+ * lest i_blocks reports 0, some "cp" or
+ * "tar" may think it's a completely
+ * sparse file and skip it.
+ */
+ inode->i_blocks = dirty_cnt(inode);
}
- cl_lock_release(env, lock, "glimpse", current);
- } else {
- CDEBUG(D_DLMTRACE, "No objects for inode\n");
- cl_merge_lvb(env, inode);
}
+
+ cl_lock_release(env, lock);
+ } else {
+ CDEBUG(D_DLMTRACE, "No objects for inode\n");
+ ll_merge_attr(env, inode);
}
RETURN(result);
}
static int cl_io_get(struct inode *inode, struct lu_env **envout,
- struct cl_io **ioout, int *refcheck)
+ struct cl_io **ioout, int *refcheck)
{
- struct lu_env *env;
- struct cl_io *io;
- struct cl_inode_info *lli = cl_i2info(inode);
- struct cl_object *clob = lli->lli_clob;
- int result;
+ struct lu_env *env;
+ struct cl_io *io;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct cl_object *clob = lli->lli_clob;
+ int result;
- if (S_ISREG(cl_inode_mode(inode))) {
+ if (S_ISREG(inode->i_mode)) {
env = cl_env_get(refcheck);
if (!IS_ERR(env)) {
- io = ccc_env_thread_io(env);
+ io = vvp_env_thread_io(env);
io->ci_obj = clob;
*envout = env;
*ioout = io;
{
struct lu_env *env = NULL;
struct cl_io *io = NULL;
- struct ccc_thread_info *cti;
struct cl_object *clob;
- struct cl_lock_descr *descr;
- struct cl_lock *lock;
int result;
int refcheck;
ENTRY;
- if (!cl_i2info(inode)->lli_has_smd)
+ if (!ll_i2info(inode)->lli_has_smd)
RETURN(0);
result = cl_io_get(inode, &env, &io, &refcheck);
if (result > 0)
result = io->ci_result;
else if (result == 0) {
- cti = ccc_env_info(env);
- descr = &cti->cti_descr;
+ struct cl_lock *lock = vvp_env_lock(env);
- *descr = whole_file;
- descr->cld_obj = clob;
- lock = cl_lock_peek(env, io, descr, "localsize", current);
- if (lock != NULL) {
- cl_merge_lvb(env, inode);
- cl_unuse(env, lock);
- cl_lock_release(env, lock, "localsize", current);
- result = 0;
- } else
- result = -ENODATA;
+ lock->cll_descr = whole_file;
+ lock->cll_descr.cld_enq_flags = CEF_PEEK;
+ lock->cll_descr.cld_obj = clob;
+ result = cl_lock_request(env, io, lock);
+ if (result == 0) {
+ ll_merge_attr(env, inode);
+ cl_lock_release(env, lock);
+ }
}
cl_io_fini(env, io);
cl_env_put(env, &refcheck);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff