#include <linux/slab.h>
#include <linux/highmem.h>
#include <linux/mm.h>
-#include <linux/smp_lock.h>
#include <linux/crc32.h>
#include <linux/kthread.h>
#include <linux/pagemap.h>
static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres);
+
+#define mlog_meta_lvb(__level, __lockres) ocfs2_dump_meta_lvb_info(__level, __PRETTY_FUNCTION__, __LINE__, __lockres)
+
+/* This aids in debugging situations where a bad LVB might be involved. */
+static void ocfs2_dump_meta_lvb_info(u64 level,
+ const char *function,
+ unsigned int line,
+ struct ocfs2_lock_res *lockres)
+{
+ struct ocfs2_meta_lvb *lvb = (struct ocfs2_meta_lvb *) lockres->l_lksb.lvb;
+
+ mlog(level, "LVB information for %s (called from %s:%u):\n",
+ lockres->l_name, function, line);
+ mlog(level, "version: %u, clusters: %u, generation: 0x%x\n",
+ lvb->lvb_version, be32_to_cpu(lvb->lvb_iclusters),
+ be32_to_cpu(lvb->lvb_igeneration));
+ mlog(level, "size: %llu, uid %u, gid %u, mode 0x%x\n",
+ (unsigned long long)be64_to_cpu(lvb->lvb_isize),
+ be32_to_cpu(lvb->lvb_iuid), be32_to_cpu(lvb->lvb_igid),
+ be16_to_cpu(lvb->lvb_imode));
+ mlog(level, "nlink %u, atime_packed 0x%llx, ctime_packed 0x%llx, "
+ "mtime_packed 0x%llx iattr 0x%x\n", be16_to_cpu(lvb->lvb_inlink),
+ (long long)be64_to_cpu(lvb->lvb_iatime_packed),
+ (long long)be64_to_cpu(lvb->lvb_ictime_packed),
+ (long long)be64_to_cpu(lvb->lvb_imtime_packed),
+ be32_to_cpu(lvb->lvb_iattr));
+}
+
+
/*
* OCFS2 Lock Resource Operations
*
.flags = 0,
};
+static struct ocfs2_lock_res_ops ocfs2_inode_open_lops = {
+ .get_osb = ocfs2_get_inode_osb,
+ .flags = 0,
+};
+
static inline int ocfs2_is_inode_lock(struct ocfs2_lock_res *lockres)
{
return lockres->l_type == OCFS2_LOCK_TYPE_META ||
lockres->l_type == OCFS2_LOCK_TYPE_DATA ||
- lockres->l_type == OCFS2_LOCK_TYPE_RW;
+ lockres->l_type == OCFS2_LOCK_TYPE_RW ||
+ lockres->l_type == OCFS2_LOCK_TYPE_OPEN;
}
static inline struct inode *ocfs2_lock_res_inode(struct ocfs2_lock_res *lockres)
case OCFS2_LOCK_TYPE_DATA:
ops = &ocfs2_inode_data_lops;
break;
+ case OCFS2_LOCK_TYPE_OPEN:
+ ops = &ocfs2_inode_open_lops;
+ break;
default:
mlog_bug_on_msg(1, "type: %d\n", type);
ops = NULL; /* thanks, gcc */
int dlm_flags)
{
int ret = 0;
- enum dlm_status status;
+ enum dlm_status status = DLM_NORMAL;
unsigned long flags;
mlog_entry_void();
goto bail;
}
+ ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_open_lockres, 0, 0);
+ if (ret) {
+ mlog_errno(ret);
+ goto bail;
+ }
+
bail:
mlog_exit(ret);
return ret;
{
int status, level;
struct ocfs2_lock_res *lockres;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
BUG_ON(!inode);
(unsigned long long)OCFS2_I(inode)->ip_blkno,
write ? "EXMODE" : "PRMODE");
+ if (ocfs2_mount_local(osb))
+ return 0;
+
lockres = &OCFS2_I(inode)->ip_rw_lockres;
level = write ? LKM_EXMODE : LKM_PRMODE;
{
int level = write ? LKM_EXMODE : LKM_PRMODE;
struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_rw_lockres;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog_entry_void();
(unsigned long long)OCFS2_I(inode)->ip_blkno,
write ? "EXMODE" : "PRMODE");
- ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres, level);
+ if (!ocfs2_mount_local(osb))
+ ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres, level);
mlog_exit_void();
}
+/*
+ * ocfs2_open_lock always get PR mode lock.
+ */
+int ocfs2_open_lock(struct inode *inode)
+{
+ int status = 0;
+ struct ocfs2_lock_res *lockres;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+
+ BUG_ON(!inode);
+
+ mlog_entry_void();
+
+ mlog(0, "inode %llu take PRMODE open lock\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno);
+
+ if (ocfs2_mount_local(osb))
+ goto out;
+
+ lockres = &OCFS2_I(inode)->ip_open_lockres;
+
+ status = ocfs2_cluster_lock(OCFS2_SB(inode->i_sb), lockres,
+ LKM_PRMODE, 0, 0);
+ if (status < 0)
+ mlog_errno(status);
+
+out:
+ mlog_exit(status);
+ return status;
+}
+
+int ocfs2_try_open_lock(struct inode *inode, int write)
+{
+ int status = 0, level;
+ struct ocfs2_lock_res *lockres;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+
+ BUG_ON(!inode);
+
+ mlog_entry_void();
+
+ mlog(0, "inode %llu try to take %s open lock\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ write ? "EXMODE" : "PRMODE");
+
+ if (ocfs2_mount_local(osb))
+ goto out;
+
+ lockres = &OCFS2_I(inode)->ip_open_lockres;
+
+ level = write ? LKM_EXMODE : LKM_PRMODE;
+
+ /*
+ * The file system may already holding a PRMODE/EXMODE open lock.
+ * Since we pass LKM_NOQUEUE, the request won't block waiting on
+ * other nodes and the -EAGAIN will indicate to the caller that
+ * this inode is still in use.
+ */
+ status = ocfs2_cluster_lock(OCFS2_SB(inode->i_sb), lockres,
+ level, LKM_NOQUEUE, 0);
+
+out:
+ mlog_exit(status);
+ return status;
+}
+
+/*
+ * ocfs2_open_unlock unlock PR and EX mode open locks.
+ */
+void ocfs2_open_unlock(struct inode *inode)
+{
+ struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_open_lockres;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+
+ mlog_entry_void();
+
+ mlog(0, "inode %llu drop open lock\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno);
+
+ if (ocfs2_mount_local(osb))
+ goto out;
+
+ if(lockres->l_ro_holders)
+ ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres,
+ LKM_PRMODE);
+ if(lockres->l_ex_holders)
+ ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres,
+ LKM_EXMODE);
+
+out:
+ mlog_exit_void();
+}
+
int ocfs2_data_lock_full(struct inode *inode,
int write,
int arg_flags)
{
int status = 0, level;
struct ocfs2_lock_res *lockres;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
BUG_ON(!inode);
goto out;
}
+ if (ocfs2_mount_local(osb))
+ goto out;
+
lockres = &OCFS2_I(inode)->ip_data_lockres;
level = write ? LKM_EXMODE : LKM_PRMODE;
{
int level = write ? LKM_EXMODE : LKM_PRMODE;
struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_data_lockres;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog_entry_void();
(unsigned long long)OCFS2_I(inode)->ip_blkno,
write ? "EXMODE" : "PRMODE");
- if (!ocfs2_is_hard_readonly(OCFS2_SB(inode->i_sb)))
+ if (!ocfs2_is_hard_readonly(OCFS2_SB(inode->i_sb)) &&
+ !ocfs2_mount_local(osb))
ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres, level);
mlog_exit_void();
if (S_ISLNK(inode->i_mode) && !oi->ip_clusters)
inode->i_blocks = 0;
else
- inode->i_blocks =
- ocfs2_align_bytes_to_sectors(i_size_read(inode));
+ inode->i_blocks = ocfs2_inode_sector_count(inode);
inode->i_uid = be32_to_cpu(lvb->lvb_iuid);
inode->i_gid = be32_to_cpu(lvb->lvb_igid);
{
int status = 0;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
- struct ocfs2_lock_res *lockres;
+ struct ocfs2_lock_res *lockres = &oi->ip_meta_lockres;
struct ocfs2_dinode *fe;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog_entry_void();
+ if (ocfs2_mount_local(osb))
+ goto bail;
+
spin_lock(&oi->ip_lock);
if (oi->ip_flags & OCFS2_INODE_DELETED) {
mlog(0, "Orphaned inode %llu was deleted while we "
}
spin_unlock(&oi->ip_lock);
- lockres = &oi->ip_meta_lockres;
-
if (!ocfs2_should_refresh_lock_res(lockres))
goto bail;
* for the inode metadata. */
ocfs2_metadata_cache_purge(inode);
- /* will do nothing for inode types that don't use the extent
- * map (directories, bitmap files, etc) */
ocfs2_extent_map_trunc(inode, 0);
if (ocfs2_meta_lvb_is_trustable(inode, lockres)) {
int arg_flags)
{
int status, level, dlm_flags, acquired;
- struct ocfs2_lock_res *lockres;
+ struct ocfs2_lock_res *lockres = NULL;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct buffer_head *local_bh = NULL;
goto bail;
}
+ if (ocfs2_mount_local(osb))
+ goto local;
+
if (!(arg_flags & OCFS2_META_LOCK_RECOVERY))
wait_event(osb->recovery_event,
ocfs2_node_map_is_empty(osb, &osb->recovery_map));
- acquired = 0;
lockres = &OCFS2_I(inode)->ip_meta_lockres;
level = ex ? LKM_EXMODE : LKM_PRMODE;
dlm_flags = 0;
wait_event(osb->recovery_event,
ocfs2_node_map_is_empty(osb, &osb->recovery_map));
+local:
/*
* We only see this flag if we're being called from
* ocfs2_read_locked_inode(). It means we're locking an inode
*/
if (inode->i_state & I_NEW) {
status = 0;
- ocfs2_complete_lock_res_refresh(lockres, 0);
+ if (lockres)
+ ocfs2_complete_lock_res_refresh(lockres, 0);
goto bail;
}
{
int level = ex ? LKM_EXMODE : LKM_PRMODE;
struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_meta_lockres;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog_entry_void();
(unsigned long long)OCFS2_I(inode)->ip_blkno,
ex ? "EXMODE" : "PRMODE");
- if (!ocfs2_is_hard_readonly(OCFS2_SB(inode->i_sb)))
+ if (!ocfs2_is_hard_readonly(OCFS2_SB(inode->i_sb)) &&
+ !ocfs2_mount_local(osb))
ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres, level);
mlog_exit_void();
int ocfs2_super_lock(struct ocfs2_super *osb,
int ex)
{
- int status;
+ int status = 0;
int level = ex ? LKM_EXMODE : LKM_PRMODE;
struct ocfs2_lock_res *lockres = &osb->osb_super_lockres;
struct buffer_head *bh;
if (ocfs2_is_hard_readonly(osb))
return -EROFS;
+ if (ocfs2_mount_local(osb))
+ goto bail;
+
status = ocfs2_cluster_lock(osb, lockres, level, 0, 0);
if (status < 0) {
mlog_errno(status);
int level = ex ? LKM_EXMODE : LKM_PRMODE;
struct ocfs2_lock_res *lockres = &osb->osb_super_lockres;
- ocfs2_cluster_unlock(osb, lockres, level);
+ if (!ocfs2_mount_local(osb))
+ ocfs2_cluster_unlock(osb, lockres, level);
}
int ocfs2_rename_lock(struct ocfs2_super *osb)
if (ocfs2_is_hard_readonly(osb))
return -EROFS;
+ if (ocfs2_mount_local(osb))
+ return 0;
+
status = ocfs2_cluster_lock(osb, lockres, LKM_EXMODE, 0, 0);
if (status < 0)
mlog_errno(status);
{
struct ocfs2_lock_res *lockres = &osb->osb_rename_lockres;
- ocfs2_cluster_unlock(osb, lockres, LKM_EXMODE);
+ if (!ocfs2_mount_local(osb))
+ ocfs2_cluster_unlock(osb, lockres, LKM_EXMODE);
}
int ocfs2_dentry_lock(struct dentry *dentry, int ex)
if (ocfs2_is_hard_readonly(osb))
return -EROFS;
+ if (ocfs2_mount_local(osb))
+ return 0;
+
ret = ocfs2_cluster_lock(osb, &dl->dl_lockres, level, 0, 0);
if (ret < 0)
mlog_errno(ret);
struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb);
- ocfs2_cluster_unlock(osb, &dl->dl_lockres, level);
+ if (!ocfs2_mount_local(osb))
+ ocfs2_cluster_unlock(osb, &dl->dl_lockres, level);
}
/* Reference counting of the dlm debug structure. We want this because
int ocfs2_dlm_init(struct ocfs2_super *osb)
{
- int status;
+ int status = 0;
u32 dlm_key;
- struct dlm_ctxt *dlm;
+ struct dlm_ctxt *dlm = NULL;
mlog_entry_void();
+ if (ocfs2_mount_local(osb))
+ goto local;
+
status = ocfs2_dlm_init_debug(osb);
if (status < 0) {
mlog_errno(status);
goto bail;
}
+ dlm_register_eviction_cb(dlm, &osb->osb_eviction_cb);
+
+local:
ocfs2_super_lock_res_init(&osb->osb_super_lockres, osb);
ocfs2_rename_lock_res_init(&osb->osb_rename_lockres, osb);
- dlm_register_eviction_cb(dlm, &osb->osb_eviction_cb);
-
osb->dlm = dlm;
status = 0;
* ocfs2_clear_inode has done it for us. */
err = ocfs2_drop_lock(OCFS2_SB(inode->i_sb),
- &OCFS2_I(inode)->ip_data_lockres);
+ &OCFS2_I(inode)->ip_open_lockres);
if (err < 0)
mlog_errno(err);
status = err;
+ err = ocfs2_drop_lock(OCFS2_SB(inode->i_sb),
+ &OCFS2_I(inode)->ip_data_lockres);
+ if (err < 0)
+ mlog_errno(err);
+ if (err < 0 && !status)
+ status = err;
+
err = ocfs2_drop_lock(OCFS2_SB(inode->i_sb),
&OCFS2_I(inode)->ip_meta_lockres);
if (err < 0)
inode = ocfs2_lock_res_inode(lockres);
mapping = inode->i_mapping;
+ /*
+ * We need this before the filemap_fdatawrite() so that it can
+ * transfer the dirty bit from the PTE to the
+ * page. Unfortunately this means that even for EX->PR
+ * downconverts, we'll lose our mappings and have to build
+ * them up again.
+ */
+ unmap_mapping_range(mapping, 0, 0, 0);
+
if (filemap_fdatawrite(mapping)) {
mlog(ML_ERROR, "Could not sync inode %llu for downconvert!",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
sync_mapping_buffers(mapping);
if (blocking == LKM_EXMODE) {
truncate_inode_pages(mapping, 0);
- unmap_mapping_range(mapping, 0, 0, 0);
} else {
/* We only need to wait on the I/O if we're not also
* truncating pages because truncate_inode_pages waits
mlog_exit_void();
}
-
-/* This aids in debugging situations where a bad LVB might be involved. */
-void ocfs2_dump_meta_lvb_info(u64 level,
- const char *function,
- unsigned int line,
- struct ocfs2_lock_res *lockres)
-{
- struct ocfs2_meta_lvb *lvb = (struct ocfs2_meta_lvb *) lockres->l_lksb.lvb;
-
- mlog(level, "LVB information for %s (called from %s:%u):\n",
- lockres->l_name, function, line);
- mlog(level, "version: %u, clusters: %u, generation: 0x%x\n",
- lvb->lvb_version, be32_to_cpu(lvb->lvb_iclusters),
- be32_to_cpu(lvb->lvb_igeneration));
- mlog(level, "size: %llu, uid %u, gid %u, mode 0x%x\n",
- (unsigned long long)be64_to_cpu(lvb->lvb_isize),
- be32_to_cpu(lvb->lvb_iuid), be32_to_cpu(lvb->lvb_igid),
- be16_to_cpu(lvb->lvb_imode));
- mlog(level, "nlink %u, atime_packed 0x%llx, ctime_packed 0x%llx, "
- "mtime_packed 0x%llx iattr 0x%x\n", be16_to_cpu(lvb->lvb_inlink),
- (long long)be64_to_cpu(lvb->lvb_iatime_packed),
- (long long)be64_to_cpu(lvb->lvb_ictime_packed),
- (long long)be64_to_cpu(lvb->lvb_imtime_packed),
- be32_to_cpu(lvb->lvb_iattr));
-}
projects / linux-2.6-omap-h63xx.git / blobdiff