#include "buffer_head_io.h"
-#define OCFS2_FI_FLAG_NOWAIT 0x1
-#define OCFS2_FI_FLAG_DELETE 0x2
struct ocfs2_find_inode_args
{
u64 fi_blkno;
return ilookup5(osb->sb, args.fi_ino, ocfs2_find_actor, &args);
}
-struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno)
+struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, int flags)
{
struct inode *inode = NULL;
struct super_block *sb = osb->sb;
}
args.fi_blkno = blkno;
- args.fi_flags = 0;
+ args.fi_flags = flags;
args.fi_ino = ino_from_blkno(sb, blkno);
inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor,
if (is_bad_inode(inode)) {
iput(inode);
inode = ERR_PTR(-ESTALE);
- mlog_errno(PTR_ERR(inode));
goto bail;
}
mlog(0, "returning inode with number %llu\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno);
mlog_exit_ptr(inode);
- } else
- mlog_errno(PTR_ERR(inode));
+ }
return inode;
}
* today. change if needed. */
if (!OCFS2_IS_VALID_DINODE(fe) ||
!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))) {
- mlog(ML_ERROR, "Invalid dinode: i_ino=%lu, i_blkno=%llu, "
+ mlog(0, "Invalid dinode: i_ino=%lu, i_blkno=%llu, "
"signature = %.*s, flags = 0x%x\n",
inode->i_ino,
(unsigned long long)le64_to_cpu(fe->i_blkno), 7,
inode->i_mode = le16_to_cpu(fe->i_mode);
inode->i_uid = le32_to_cpu(fe->i_uid);
inode->i_gid = le32_to_cpu(fe->i_gid);
- inode->i_blksize = (u32)osb->s_clustersize;
/* Fast symlinks will have i_size but no allocated clusters. */
if (S_ISLNK(inode->i_mode) && !fe->i_clusters)
OCFS2_I(inode)->ip_orphaned_slot = OCFS2_INVALID_SLOT;
OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
- if (create_ino)
- inode->i_ino = ino_from_blkno(inode->i_sb,
- le64_to_cpu(fe->i_blkno));
-
- mlog(0, "blkno = %llu, ino = %lu, create_ino = %s\n",
- (unsigned long long)fe->i_blkno, inode->i_ino, create_ino ? "true" : "false");
-
inode->i_nlink = le16_to_cpu(fe->i_links_count);
+ if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL))
+ OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE;
+
if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) {
OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP;
mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino);
break;
}
+ if (create_ino) {
+ inode->i_ino = ino_from_blkno(inode->i_sb,
+ le64_to_cpu(fe->i_blkno));
+
+ /*
+ * If we ever want to create system files from kernel,
+ * the generation argument to
+ * ocfs2_inode_lock_res_init() will have to change.
+ */
+ BUG_ON(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL));
+
+ ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres,
+ OCFS2_LOCK_TYPE_META, 0, inode);
+ }
+
ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres,
- OCFS2_LOCK_TYPE_RW, inode);
- ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres,
- OCFS2_LOCK_TYPE_META, inode);
+ OCFS2_LOCK_TYPE_RW, inode->i_generation,
+ inode);
+
ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_data_lockres,
- OCFS2_LOCK_TYPE_DATA, inode);
+ OCFS2_LOCK_TYPE_DATA, inode->i_generation,
+ inode);
ocfs2_set_inode_flags(inode);
- inode->i_flags |= S_NOATIME;
status = 0;
bail:
struct ocfs2_super *osb;
struct ocfs2_dinode *fe;
struct buffer_head *bh = NULL;
- int status;
- int sysfile = 0;
+ int status, can_lock;
+ u32 generation = 0;
mlog_entry("(0x%p, 0x%p)\n", inode, args);
status = -EINVAL;
if (inode == NULL || inode->i_sb == NULL) {
mlog(ML_ERROR, "bad inode\n");
- goto bail;
+ return status;
}
sb = inode->i_sb;
osb = OCFS2_SB(sb);
if (!args) {
mlog(ML_ERROR, "bad inode args\n");
make_bad_inode(inode);
- goto bail;
+ return status;
+ }
+
+ /*
+ * To improve performance of cold-cache inode stats, we take
+ * the cluster lock here if possible.
+ *
+ * Generally, OCFS2 never trusts the contents of an inode
+ * unless it's holding a cluster lock, so taking it here isn't
+ * a correctness issue as much as it is a performance
+ * improvement.
+ *
+ * There are three times when taking the lock is not a good idea:
+ *
+ * 1) During startup, before we have initialized the DLM.
+ *
+ * 2) If we are reading certain system files which never get
+ * cluster locks (local alloc, truncate log).
+ *
+ * 3) If the process doing the iget() is responsible for
+ * orphan dir recovery. We're holding the orphan dir lock and
+ * can get into a deadlock with another process on another
+ * node in ->delete_inode().
+ *
+ * #1 and #2 can be simply solved by never taking the lock
+ * here for system files (which are the only type we read
+ * during mount). It's a heavier approach, but our main
+ * concern is user-accesible files anyway.
+ *
+ * #3 works itself out because we'll eventually take the
+ * cluster lock before trusting anything anyway.
+ */
+ can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
+ && !(args->fi_flags & OCFS2_FI_FLAG_NOLOCK)
+ && !ocfs2_mount_local(osb);
+
+ /*
+ * To maintain backwards compatibility with older versions of
+ * ocfs2-tools, we still store the generation value for system
+ * files. The only ones that actually matter to userspace are
+ * the journals, but it's easier and inexpensive to just flag
+ * all system files similarly.
+ */
+ if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
+ generation = osb->fs_generation;
+
+ ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_meta_lockres,
+ OCFS2_LOCK_TYPE_META,
+ generation, inode);
+
+ if (can_lock) {
+ status = ocfs2_meta_lock(inode, NULL, 0);
+ if (status) {
+ make_bad_inode(inode);
+ mlog_errno(status);
+ return status;
+ }
}
- /* Read the FE off disk. This is safe because the kernel only
- * does one read_inode2 for a new inode, and if it doesn't
- * exist yet then nobody can be working on it! */
- status = ocfs2_read_block(osb, args->fi_blkno, &bh, 0, NULL);
+ status = ocfs2_read_block(osb, args->fi_blkno, &bh, 0,
+ can_lock ? inode : NULL);
if (status < 0) {
mlog_errno(status);
- make_bad_inode(inode);
goto bail;
}
+ status = -EINVAL;
fe = (struct ocfs2_dinode *) bh->b_data;
if (!OCFS2_IS_VALID_DINODE(fe)) {
mlog(ML_ERROR, "Invalid dinode #%llu: signature = %.*s\n",
(unsigned long long)fe->i_blkno, 7, fe->i_signature);
- make_bad_inode(inode);
goto bail;
}
- if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL))
- sysfile = 1;
+ /*
+ * This is a code bug. Right now the caller needs to
+ * understand whether it is asking for a system file inode or
+ * not so the proper lock names can be built.
+ */
+ mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) !=
+ !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE),
+ "Inode %llu: system file state is ambigous\n",
+ (unsigned long long)args->fi_blkno);
if (S_ISCHR(le16_to_cpu(fe->i_mode)) ||
S_ISBLK(le16_to_cpu(fe->i_mode)))
inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
- status = -EINVAL;
- if (ocfs2_populate_inode(inode, fe, 0) < 0) {
- mlog(ML_ERROR, "populate failed! i_blkno=%llu, i_ino=%lu\n",
- (unsigned long long)fe->i_blkno, inode->i_ino);
- make_bad_inode(inode);
+ if (ocfs2_populate_inode(inode, fe, 0) < 0)
goto bail;
- }
BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno));
- if (sysfile)
- OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE;
-
status = 0;
bail:
+ if (can_lock)
+ ocfs2_meta_unlock(inode, 0);
+
+ if (status < 0)
+ make_bad_inode(inode);
+
if (args && bh)
brelse(bh);
struct buffer_head *fe_bh)
{
int status = 0;
- struct ocfs2_journal_handle *handle = NULL;
+ handle_t *handle = NULL;
struct ocfs2_truncate_context *tc = NULL;
struct ocfs2_dinode *fe;
if (!fe->i_clusters)
goto bail;
- handle = ocfs2_start_trans(osb, handle, OCFS2_INODE_UPDATE_CREDITS);
+ handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
handle = NULL;
goto bail;
}
- ocfs2_commit_trans(handle);
+ ocfs2_commit_trans(osb, handle);
handle = NULL;
status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc);
}
bail:
if (handle)
- ocfs2_commit_trans(handle);
+ ocfs2_commit_trans(osb, handle);
mlog_exit(status);
return status;
int status;
struct inode *inode_alloc_inode = NULL;
struct buffer_head *inode_alloc_bh = NULL;
- struct ocfs2_journal_handle *handle;
+ handle_t *handle;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data;
}
mutex_lock(&inode_alloc_inode->i_mutex);
- status = ocfs2_meta_lock(inode_alloc_inode, NULL, &inode_alloc_bh, 1);
+ status = ocfs2_meta_lock(inode_alloc_inode, &inode_alloc_bh, 1);
if (status < 0) {
mutex_unlock(&inode_alloc_inode->i_mutex);
goto bail;
}
- handle = ocfs2_start_trans(osb, NULL, OCFS2_DELETE_INODE_CREDITS);
+ handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS);
if (IS_ERR(handle)) {
status = PTR_ERR(handle);
mlog_errno(status);
mlog_errno(status);
bail_commit:
- ocfs2_commit_trans(handle);
+ ocfs2_commit_trans(osb, handle);
bail_unlock:
ocfs2_meta_unlock(inode_alloc_inode, 1);
mutex_unlock(&inode_alloc_inode->i_mutex);
* delete_inode operation. We do this now to avoid races with
* recovery completion on other nodes. */
mutex_lock(&orphan_dir_inode->i_mutex);
- status = ocfs2_meta_lock(orphan_dir_inode, NULL, &orphan_dir_bh, 1);
+ status = ocfs2_meta_lock(orphan_dir_inode, &orphan_dir_bh, 1);
if (status < 0) {
mutex_unlock(&orphan_dir_inode->i_mutex);
* allocation lock here as it won't be needed - nobody will
* have the file open.
*/
- status = ocfs2_meta_lock(inode, NULL, &di_bh, 1);
+ status = ocfs2_meta_lock(inode, &di_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
goto bail_unlock_inode;
}
- /* Mark the inode as successfully deleted. This is important
- * for ocfs2_clear_inode as it will check this flag and skip
- * any checkpointing work */
+ /*
+ * Mark the inode as successfully deleted.
+ *
+ * This is important for ocfs2_clear_inode() as it will check
+ * this flag and skip any checkpointing work
+ *
+ * ocfs2_stuff_meta_lvb() also uses this flag to invalidate
+ * the LVB for other nodes.
+ */
OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED;
bail_unlock_inode:
mlog_bug_on_msg(oi->ip_open_count,
"Clear inode of %llu has open count %d\n",
(unsigned long long)oi->ip_blkno, oi->ip_open_count);
- mlog_bug_on_msg(!list_empty(&oi->ip_handle_list),
- "Clear inode of %llu has non empty handle list\n",
- (unsigned long long)oi->ip_blkno);
- mlog_bug_on_msg(oi->ip_handle,
- "Clear inode of %llu has non empty handle pointer\n",
- (unsigned long long)oi->ip_blkno);
/* Clear all other flags. */
oi->ip_flags = OCFS2_INODE_CACHE_INLINE;
/* Testing ip_orphaned_slot here wouldn't work because we may
* not have gotten a delete_inode vote from any other nodes
* yet. */
- if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) {
- mlog(0, "Inode was orphaned on another node, clearing nlink.\n");
- inode->i_nlink = 0;
- }
-
- generic_drop_inode(inode);
+ if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)
+ generic_delete_inode(inode);
+ else
+ generic_drop_inode(inode);
mlog_exit_void();
}
/* Let ocfs2_meta_lock do the work of updating our struct
* inode for us. */
- status = ocfs2_meta_lock(inode, NULL, NULL, 0);
+ status = ocfs2_meta_lock(inode, NULL, 0);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
* struct inode.
* Only takes ip_lock.
*/
-int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle *handle,
+int ocfs2_mark_inode_dirty(handle_t *handle,
struct inode *inode,
struct buffer_head *bh)
{
void ocfs2_refresh_inode(struct inode *inode,
struct ocfs2_dinode *fe)
{
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
-
spin_lock(&OCFS2_I(inode)->ip_lock);
OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
inode->i_uid = le32_to_cpu(fe->i_uid);
inode->i_gid = le32_to_cpu(fe->i_gid);
inode->i_mode = le16_to_cpu(fe->i_mode);
- inode->i_blksize = (u32) osb->s_clustersize;
if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0)
inode->i_blocks = 0;
else