#include "symlink.h"
#include "sysfile.h"
#include "uptodate.h"
-#include "vote.h"
#include "buffer_head_io.h"
-#define NAMEI_RA_CHUNKS 2
-#define NAMEI_RA_BLOCKS 4
-#define NAMEI_RA_SIZE (NAMEI_RA_CHUNKS * NAMEI_RA_BLOCKS)
-#define NAMEI_RA_INDEX(c,b) (((c) * NAMEI_RA_BLOCKS) + (b))
-
-static int inline ocfs2_search_dirblock(struct buffer_head *bh,
- struct inode *dir,
- const char *name, int namelen,
- unsigned long offset,
- struct ocfs2_dir_entry **res_dir);
-
-static int ocfs2_delete_entry(handle_t *handle,
- struct inode *dir,
- struct ocfs2_dir_entry *de_del,
- struct buffer_head *bh);
-
-static int __ocfs2_add_entry(handle_t *handle,
- struct inode *dir,
- const char *name, int namelen,
- struct inode *inode, u64 blkno,
- struct buffer_head *parent_fe_bh,
- struct buffer_head *insert_bh);
-
static int ocfs2_mknod_locked(struct ocfs2_super *osb,
struct inode *dir,
struct dentry *dentry, int mode,
struct inode **ret_inode,
struct ocfs2_alloc_context *inode_ac);
-static int ocfs2_fill_new_dir(struct ocfs2_super *osb,
- handle_t *handle,
- struct inode *parent,
- struct inode *inode,
- struct buffer_head *fe_bh,
- struct ocfs2_alloc_context *data_ac);
-
static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
struct inode **ret_orphan_dir,
struct inode *inode,
struct inode *inode,
const char *symname);
-static inline int ocfs2_add_entry(handle_t *handle,
- struct dentry *dentry,
- struct inode *inode, u64 blkno,
- struct buffer_head *parent_fe_bh,
- struct buffer_head *insert_bh)
-{
- return __ocfs2_add_entry(handle, dentry->d_parent->d_inode,
- dentry->d_name.name, dentry->d_name.len,
- inode, blkno, parent_fe_bh, insert_bh);
-}
-
/* An orphan dir name is an 8 byte value, printed as a hex string */
#define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
{
int status;
u64 blkno;
- struct buffer_head *dirent_bh = NULL;
struct inode *inode = NULL;
struct dentry *ret;
- struct ocfs2_dir_entry *dirent;
struct ocfs2_inode_info *oi;
mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len,
dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno);
- status = ocfs2_meta_lock(dir, NULL, 0);
+ status = ocfs2_inode_lock(dir, NULL, 0);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
goto bail;
}
- status = ocfs2_find_files_on_disk(dentry->d_name.name,
- dentry->d_name.len, &blkno,
- dir, &dirent_bh, &dirent);
+ status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
+ dentry->d_name.len, &blkno);
if (status < 0)
goto bail_add;
- inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0);
+ inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
if (IS_ERR(inode)) {
ret = ERR_PTR(-EACCES);
goto bail_unlock;
/* Don't drop the cluster lock until *after* the d_add --
* unlink on another node will message us to remove that
* dentry under this lock so otherwise we can race this with
- * the vote thread and have a stale dentry. */
- ocfs2_meta_unlock(dir, 0);
+ * the downconvert thread and have a stale dentry. */
+ ocfs2_inode_unlock(dir, 0);
bail:
- if (dirent_bh)
- brelse(dirent_bh);
mlog_exit_ptr(ret);
return ret;
}
-static int ocfs2_fill_new_dir(struct ocfs2_super *osb,
- handle_t *handle,
- struct inode *parent,
- struct inode *inode,
- struct buffer_head *fe_bh,
- struct ocfs2_alloc_context *data_ac)
-{
- int status;
- struct buffer_head *new_bh = NULL;
- struct ocfs2_dir_entry *de = NULL;
-
- mlog_entry_void();
-
- status = ocfs2_do_extend_dir(osb->sb, handle, inode, fe_bh,
- data_ac, NULL, &new_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- ocfs2_set_new_buffer_uptodate(inode, new_bh);
-
- status = ocfs2_journal_access(handle, inode, new_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- memset(new_bh->b_data, 0, osb->sb->s_blocksize);
-
- de = (struct ocfs2_dir_entry *) new_bh->b_data;
- de->inode = cpu_to_le64(OCFS2_I(inode)->ip_blkno);
- de->name_len = 1;
- de->rec_len =
- cpu_to_le16(OCFS2_DIR_REC_LEN(de->name_len));
- strcpy(de->name, ".");
- ocfs2_set_de_type(de, S_IFDIR);
- de = (struct ocfs2_dir_entry *) ((char *)de + le16_to_cpu(de->rec_len));
- de->inode = cpu_to_le64(OCFS2_I(parent)->ip_blkno);
- de->rec_len = cpu_to_le16(inode->i_sb->s_blocksize -
- OCFS2_DIR_REC_LEN(1));
- de->name_len = 2;
- strcpy(de->name, "..");
- ocfs2_set_de_type(de, S_IFDIR);
-
- status = ocfs2_journal_dirty(handle, new_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- i_size_write(inode, inode->i_sb->s_blocksize);
- inode->i_nlink = 2;
- inode->i_blocks = ocfs2_inode_sector_count(inode);
- status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
-
- status = 0;
-bail:
- if (new_bh)
- brelse(new_bh);
-
- mlog_exit(status);
- return status;
-}
-
static int ocfs2_mknod(struct inode *dir,
struct dentry *dentry,
int mode,
/* get our super block */
osb = OCFS2_SB(dir->i_sb);
- status = ocfs2_meta_lock(dir, &parent_fe_bh, 1);
+ status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
goto leave;
}
- /* are we making a directory? If so, reserve a cluster for his
- * 1st extent. */
- if (S_ISDIR(mode)) {
+ /* Reserve a cluster if creating an extent based directory. */
+ if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
status = ocfs2_reserve_clusters(osb, 1, &data_ac);
if (status < 0) {
if (status != -ENOSPC)
if (handle)
ocfs2_commit_trans(osb, handle);
- ocfs2_meta_unlock(dir, 1);
+ ocfs2_inode_unlock(dir, 1);
if (status == -ENOSPC)
mlog(0, "Disk is full\n");
cpu_to_le32(CURRENT_TIME.tv_nsec);
fe->i_dtime = 0;
- fel = &fe->id2.i_list;
- fel->l_tree_depth = 0;
- fel->l_next_free_rec = 0;
- fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
+ /*
+ * If supported, directories start with inline data.
+ */
+ if (S_ISDIR(mode) && ocfs2_supports_inline_data(osb)) {
+ u16 feat = le16_to_cpu(fe->i_dyn_features);
+
+ fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
+
+ fe->id2.i_data.id_count = cpu_to_le16(ocfs2_max_inline_data(osb->sb));
+ } else {
+ fel = &fe->id2.i_list;
+ fel->l_tree_depth = 0;
+ fel->l_next_free_rec = 0;
+ fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
+ }
status = ocfs2_journal_dirty(handle, *new_fe_bh);
if (status < 0) {
if (S_ISDIR(inode->i_mode))
return -EPERM;
- err = ocfs2_meta_lock(dir, &parent_fe_bh, 1);
+ err = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
if (err < 0) {
if (err != -ENOENT)
mlog_errno(err);
goto out;
}
- err = ocfs2_meta_lock(inode, &fe_bh, 1);
+ err = ocfs2_inode_lock(inode, &fe_bh, 1);
if (err < 0) {
if (err != -ENOENT)
mlog_errno(err);
out_commit:
ocfs2_commit_trans(osb, handle);
out_unlock_inode:
- ocfs2_meta_unlock(inode, 1);
+ ocfs2_inode_unlock(inode, 1);
out:
- ocfs2_meta_unlock(dir, 1);
+ ocfs2_inode_unlock(dir, 1);
if (de_bh)
brelse(de_bh);
return -EPERM;
}
- status = ocfs2_meta_lock(dir, &parent_node_bh, 1);
+ status = ocfs2_inode_lock(dir, &parent_node_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
goto leave;
}
- status = ocfs2_meta_lock(inode, &fe_bh, 1);
+ status = ocfs2_inode_lock(inode, &fe_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
status = ocfs2_remote_dentry_delete(dentry);
if (status < 0) {
- /* This vote should succeed under all normal
+ /* This remote delete should succeed under all normal
* circumstances. */
mlog_errno(status);
goto leave;
ocfs2_commit_trans(osb, handle);
if (child_locked)
- ocfs2_meta_unlock(inode, 1);
+ ocfs2_inode_unlock(inode, 1);
- ocfs2_meta_unlock(dir, 1);
+ ocfs2_inode_unlock(dir, 1);
if (orphan_dir) {
/* This was locked for us in ocfs2_prepare_orphan_dir() */
- ocfs2_meta_unlock(orphan_dir, 1);
+ ocfs2_inode_unlock(orphan_dir, 1);
mutex_unlock(&orphan_dir->i_mutex);
iput(orphan_dir);
}
inode1 = tmpinode;
}
/* lock id2 */
- status = ocfs2_meta_lock(inode2, bh2, 1);
+ status = ocfs2_inode_lock(inode2, bh2, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
}
/* lock id1 */
- status = ocfs2_meta_lock(inode1, bh1, 1);
+ status = ocfs2_inode_lock(inode1, bh1, 1);
if (status < 0) {
/*
* An error return must mean that no cluster locks
* were held on function exit.
*/
if (oi1->ip_blkno != oi2->ip_blkno)
- ocfs2_meta_unlock(inode2, 1);
+ ocfs2_inode_unlock(inode2, 1);
if (status != -ENOENT)
mlog_errno(status);
static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
{
- ocfs2_meta_unlock(inode1, 1);
+ ocfs2_inode_unlock(inode1, 1);
if (inode1 != inode2)
- ocfs2_meta_unlock(inode2, 1);
+ ocfs2_inode_unlock(inode2, 1);
}
-#define PARENT_INO(buffer) \
- ((struct ocfs2_dir_entry *) \
- ((char *)buffer + \
- le16_to_cpu(((struct ocfs2_dir_entry *)buffer)->rec_len)))->inode
-
static int ocfs2_rename(struct inode *old_dir,
struct dentry *old_dentry,
struct inode *new_dir,
struct buffer_head *old_inode_bh = NULL;
struct buffer_head *insert_entry_bh = NULL;
struct ocfs2_super *osb = NULL;
- u64 newfe_blkno;
+ u64 newfe_blkno, old_de_ino;
handle_t *handle = NULL;
struct buffer_head *old_dir_bh = NULL;
struct buffer_head *new_dir_bh = NULL;
- struct ocfs2_dir_entry *old_de = NULL, *new_de = NULL; // dirent for old_dentry
- // and new_dentry
+ struct ocfs2_dir_entry *old_inode_dot_dot_de = NULL, *old_de = NULL,
+ *new_de = NULL;
struct buffer_head *new_de_bh = NULL, *old_de_bh = NULL; // bhs for above
struct buffer_head *old_inode_de_bh = NULL; // if old_dentry is a dir,
// this is the 1st dirent bh
/*
* Aside from allowing a meta data update, the locking here
- * also ensures that the vote thread on other nodes won't have
- * to concurrently downconvert the inode and the dentry locks.
+ * also ensures that the downconvert thread on other nodes
+ * won't have to concurrently downconvert the inode and the
+ * dentry locks.
*/
- status = ocfs2_meta_lock(old_inode, &old_inode_bh, 1);
+ status = ocfs2_inode_lock(old_inode, &old_inode_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
}
if (S_ISDIR(old_inode->i_mode)) {
- status = -EIO;
- old_inode_de_bh = ocfs2_bread(old_inode, 0, &status, 0);
- if (!old_inode_de_bh)
+ u64 old_inode_parent;
+
+ status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
+ old_inode, &old_inode_de_bh,
+ &old_inode_dot_dot_de);
+ if (status) {
+ status = -EIO;
goto bail;
+ }
- status = -EIO;
- if (le64_to_cpu(PARENT_INO(old_inode_de_bh->b_data)) !=
- OCFS2_I(old_dir)->ip_blkno)
+ if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
+ status = -EIO;
goto bail;
- status = -EMLINK;
- if (!new_inode && new_dir!=old_dir &&
- new_dir->i_nlink >= OCFS2_LINK_MAX)
+ }
+
+ if (!new_inode && new_dir != old_dir &&
+ new_dir->i_nlink >= OCFS2_LINK_MAX) {
+ status = -EMLINK;
goto bail;
+ }
}
- status = -ENOENT;
- old_de_bh = ocfs2_find_entry(old_dentry->d_name.name,
- old_dentry->d_name.len,
- old_dir, &old_de);
- if (!old_de_bh)
+ status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
+ old_dentry->d_name.len,
+ &old_de_ino);
+ if (status) {
+ status = -ENOENT;
goto bail;
+ }
/*
* Check for inode number is _not_ due to possible IO errors.
* and merrily kill the link to whatever was created under the
* same name. Goodbye sticky bit ;-<
*/
- if (le64_to_cpu(old_de->inode) != OCFS2_I(old_inode)->ip_blkno)
+ if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
+ status = -ENOENT;
goto bail;
+ }
/* check if the target already exists (in which case we need
* to delete it */
goto bail;
}
- if (!new_de && new_inode)
- mlog(ML_ERROR, "inode %lu does not exist in it's parent "
- "directory!", new_inode->i_ino);
+ if (!new_de && new_inode) {
+ /*
+ * Target was unlinked by another node while we were
+ * waiting to get to ocfs2_rename(). There isn't
+ * anything we can do here to help the situation, so
+ * bubble up the appropriate error.
+ */
+ status = -ENOENT;
+ goto bail;
+ }
/* In case we need to overwrite an existing file, we blow it
* away first */
goto bail;
}
- status = ocfs2_meta_lock(new_inode, &newfe_bh, 1);
+ status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
}
/* change the dirent to point to the correct inode */
- status = ocfs2_journal_access(handle, new_dir, new_de_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_update_entry(new_dir, handle, new_de_bh,
+ new_de, old_inode);
if (status < 0) {
mlog_errno(status);
goto bail;
}
- new_de->inode = cpu_to_le64(OCFS2_I(old_inode)->ip_blkno);
- new_de->file_type = old_de->file_type;
new_dir->i_version++;
- status = ocfs2_journal_dirty(handle, new_de_bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
if (S_ISDIR(new_inode->i_mode))
newfe->i_links_count = 0;
} else
mlog_errno(status);
- /* now that the name has been added to new_dir, remove the old name */
+ /*
+ * Now that the name has been added to new_dir, remove the old name.
+ *
+ * We don't keep any directory entry context around until now
+ * because the insert might have changed the type of directory
+ * we're dealing with.
+ */
+ old_de_bh = ocfs2_find_entry(old_dentry->d_name.name,
+ old_dentry->d_name.len,
+ old_dir, &old_de);
+ if (!old_de_bh) {
+ status = -EIO;
+ goto bail;
+ }
+
status = ocfs2_delete_entry(handle, old_dir, old_de, old_de_bh);
if (status < 0) {
mlog_errno(status);
}
old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
if (old_inode_de_bh) {
- status = ocfs2_journal_access(handle, old_inode,
- old_inode_de_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- PARENT_INO(old_inode_de_bh->b_data) =
- cpu_to_le64(OCFS2_I(new_dir)->ip_blkno);
- status = ocfs2_journal_dirty(handle, old_inode_de_bh);
+ status = ocfs2_update_entry(old_inode, handle, old_inode_de_bh,
+ old_inode_dot_dot_de, new_dir);
old_dir->i_nlink--;
if (new_inode) {
new_inode->i_nlink--;
ocfs2_double_unlock(old_dir, new_dir);
if (old_child_locked)
- ocfs2_meta_unlock(old_inode, 1);
+ ocfs2_inode_unlock(old_inode, 1);
if (new_child_locked)
- ocfs2_meta_unlock(new_inode, 1);
+ ocfs2_inode_unlock(new_inode, 1);
if (orphan_dir) {
/* This was locked for us in ocfs2_prepare_orphan_dir() */
- ocfs2_meta_unlock(orphan_dir, 1);
+ ocfs2_inode_unlock(orphan_dir, 1);
mutex_unlock(&orphan_dir->i_mutex);
iput(orphan_dir);
}
credits = ocfs2_calc_symlink_credits(sb);
/* lock the parent directory */
- status = ocfs2_meta_lock(dir, &parent_fe_bh, 1);
+ status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
if (handle)
ocfs2_commit_trans(osb, handle);
- ocfs2_meta_unlock(dir, 1);
+ ocfs2_inode_unlock(dir, 1);
if (new_fe_bh)
brelse(new_fe_bh);
return status;
}
-int ocfs2_check_dir_entry(struct inode * dir,
- struct ocfs2_dir_entry * de,
- struct buffer_head * bh,
- unsigned long offset)
-{
- const char *error_msg = NULL;
- const int rlen = le16_to_cpu(de->rec_len);
-
- if (rlen < OCFS2_DIR_REC_LEN(1))
- error_msg = "rec_len is smaller than minimal";
- else if (rlen % 4 != 0)
- error_msg = "rec_len % 4 != 0";
- else if (rlen < OCFS2_DIR_REC_LEN(de->name_len))
- error_msg = "rec_len is too small for name_len";
- else if (((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize)
- error_msg = "directory entry across blocks";
-
- if (error_msg != NULL)
- mlog(ML_ERROR, "bad entry in directory #%llu: %s - "
- "offset=%lu, inode=%llu, rec_len=%d, name_len=%d\n",
- (unsigned long long)OCFS2_I(dir)->ip_blkno, error_msg,
- offset, (unsigned long long)le64_to_cpu(de->inode), rlen,
- de->name_len);
- return error_msg == NULL ? 1 : 0;
-}
-
-/* we don't always have a dentry for what we want to add, so people
- * like orphan dir can call this instead.
- *
- * If you pass me insert_bh, I'll skip the search of the other dir
- * blocks and put the record in there.
- */
-static int __ocfs2_add_entry(handle_t *handle,
- struct inode *dir,
- const char *name, int namelen,
- struct inode *inode, u64 blkno,
- struct buffer_head *parent_fe_bh,
- struct buffer_head *insert_bh)
-{
- unsigned long offset;
- unsigned short rec_len;
- struct ocfs2_dir_entry *de, *de1;
- struct super_block *sb;
- int retval, status;
-
- mlog_entry_void();
-
- sb = dir->i_sb;
-
- if (!namelen)
- return -EINVAL;
-
- rec_len = OCFS2_DIR_REC_LEN(namelen);
- offset = 0;
- de = (struct ocfs2_dir_entry *) insert_bh->b_data;
- while (1) {
- BUG_ON((char *)de >= sb->s_blocksize + insert_bh->b_data);
- /* These checks should've already been passed by the
- * prepare function, but I guess we can leave them
- * here anyway. */
- if (!ocfs2_check_dir_entry(dir, de, insert_bh, offset)) {
- retval = -ENOENT;
- goto bail;
- }
- if (ocfs2_match(namelen, name, de)) {
- retval = -EEXIST;
- goto bail;
- }
- if (((le64_to_cpu(de->inode) == 0) &&
- (le16_to_cpu(de->rec_len) >= rec_len)) ||
- (le16_to_cpu(de->rec_len) >=
- (OCFS2_DIR_REC_LEN(de->name_len) + rec_len))) {
- dir->i_mtime = dir->i_ctime = CURRENT_TIME;
- retval = ocfs2_mark_inode_dirty(handle, dir, parent_fe_bh);
- if (retval < 0) {
- mlog_errno(retval);
- goto bail;
- }
-
- status = ocfs2_journal_access(handle, dir, insert_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- /* By now the buffer is marked for journaling */
- offset += le16_to_cpu(de->rec_len);
- if (le64_to_cpu(de->inode)) {
- de1 = (struct ocfs2_dir_entry *)((char *) de +
- OCFS2_DIR_REC_LEN(de->name_len));
- de1->rec_len =
- cpu_to_le16(le16_to_cpu(de->rec_len) -
- OCFS2_DIR_REC_LEN(de->name_len));
- de->rec_len = cpu_to_le16(OCFS2_DIR_REC_LEN(de->name_len));
- de = de1;
- }
- de->file_type = OCFS2_FT_UNKNOWN;
- if (blkno) {
- de->inode = cpu_to_le64(blkno);
- ocfs2_set_de_type(de, inode->i_mode);
- } else
- de->inode = 0;
- de->name_len = namelen;
- memcpy(de->name, name, namelen);
-
- dir->i_version++;
- status = ocfs2_journal_dirty(handle, insert_bh);
- retval = 0;
- goto bail;
- }
- offset += le16_to_cpu(de->rec_len);
- de = (struct ocfs2_dir_entry *) ((char *) de + le16_to_cpu(de->rec_len));
- }
-
- /* when you think about it, the assert above should prevent us
- * from ever getting here. */
- retval = -ENOSPC;
-bail:
-
- mlog_exit(retval);
- return retval;
-}
-
-
-/*
- * ocfs2_delete_entry deletes a directory entry by merging it with the
- * previous entry
- */
-static int ocfs2_delete_entry(handle_t *handle,
- struct inode *dir,
- struct ocfs2_dir_entry *de_del,
- struct buffer_head *bh)
-{
- struct ocfs2_dir_entry *de, *pde;
- int i, status = -ENOENT;
-
- mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p)\n", handle, dir, de_del, bh);
-
- i = 0;
- pde = NULL;
- de = (struct ocfs2_dir_entry *) bh->b_data;
- while (i < bh->b_size) {
- if (!ocfs2_check_dir_entry(dir, de, bh, i)) {
- status = -EIO;
- mlog_errno(status);
- goto bail;
- }
- if (de == de_del) {
- status = ocfs2_journal_access(handle, dir, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (status < 0) {
- status = -EIO;
- mlog_errno(status);
- goto bail;
- }
- if (pde)
- pde->rec_len =
- cpu_to_le16(le16_to_cpu(pde->rec_len) +
- le16_to_cpu(de->rec_len));
- else
- de->inode = 0;
- dir->i_version++;
- status = ocfs2_journal_dirty(handle, bh);
- goto bail;
- }
- i += le16_to_cpu(de->rec_len);
- pde = de;
- de = (struct ocfs2_dir_entry *)((char *)de + le16_to_cpu(de->rec_len));
- }
-bail:
- mlog_exit(status);
- return status;
-}
-
-/*
- * Returns 0 if not found, -1 on failure, and 1 on success
- */
-static int inline ocfs2_search_dirblock(struct buffer_head *bh,
- struct inode *dir,
- const char *name, int namelen,
- unsigned long offset,
- struct ocfs2_dir_entry **res_dir)
-{
- struct ocfs2_dir_entry *de;
- char *dlimit, *de_buf;
- int de_len;
- int ret = 0;
-
- mlog_entry_void();
-
- de_buf = bh->b_data;
- dlimit = de_buf + dir->i_sb->s_blocksize;
-
- while (de_buf < dlimit) {
- /* this code is executed quadratically often */
- /* do minimal checking `by hand' */
-
- de = (struct ocfs2_dir_entry *) de_buf;
-
- if (de_buf + namelen <= dlimit &&
- ocfs2_match(namelen, name, de)) {
- /* found a match - just to be sure, do a full check */
- if (!ocfs2_check_dir_entry(dir, de, bh, offset)) {
- ret = -1;
- goto bail;
- }
- *res_dir = de;
- ret = 1;
- goto bail;
- }
-
- /* prevent looping on a bad block */
- de_len = le16_to_cpu(de->rec_len);
- if (de_len <= 0) {
- ret = -1;
- goto bail;
- }
-
- de_buf += de_len;
- offset += de_len;
- }
-
-bail:
- mlog_exit(ret);
- return ret;
-}
-
-struct buffer_head *ocfs2_find_entry(const char *name, int namelen,
- struct inode *dir,
- struct ocfs2_dir_entry **res_dir)
-{
- struct super_block *sb;
- struct buffer_head *bh_use[NAMEI_RA_SIZE];
- struct buffer_head *bh, *ret = NULL;
- unsigned long start, block, b;
- int ra_max = 0; /* Number of bh's in the readahead
- buffer, bh_use[] */
- int ra_ptr = 0; /* Current index into readahead
- buffer */
- int num = 0;
- int nblocks, i, err;
-
- mlog_entry_void();
-
- *res_dir = NULL;
- sb = dir->i_sb;
-
- nblocks = i_size_read(dir) >> sb->s_blocksize_bits;
- start = OCFS2_I(dir)->ip_dir_start_lookup;
- if (start >= nblocks)
- start = 0;
- block = start;
-
-restart:
- do {
- /*
- * We deal with the read-ahead logic here.
- */
- if (ra_ptr >= ra_max) {
- /* Refill the readahead buffer */
- ra_ptr = 0;
- b = block;
- for (ra_max = 0; ra_max < NAMEI_RA_SIZE; ra_max++) {
- /*
- * Terminate if we reach the end of the
- * directory and must wrap, or if our
- * search has finished at this block.
- */
- if (b >= nblocks || (num && block == start)) {
- bh_use[ra_max] = NULL;
- break;
- }
- num++;
-
- bh = ocfs2_bread(dir, b++, &err, 1);
- bh_use[ra_max] = bh;
- }
- }
- if ((bh = bh_use[ra_ptr++]) == NULL)
- goto next;
- wait_on_buffer(bh);
- if (!buffer_uptodate(bh)) {
- /* read error, skip block & hope for the best */
- ocfs2_error(dir->i_sb, "reading directory %llu, "
- "offset %lu\n",
- (unsigned long long)OCFS2_I(dir)->ip_blkno,
- block);
- brelse(bh);
- goto next;
- }
- i = ocfs2_search_dirblock(bh, dir, name, namelen,
- block << sb->s_blocksize_bits,
- res_dir);
- if (i == 1) {
- OCFS2_I(dir)->ip_dir_start_lookup = block;
- ret = bh;
- goto cleanup_and_exit;
- } else {
- brelse(bh);
- if (i < 0)
- goto cleanup_and_exit;
- }
- next:
- if (++block >= nblocks)
- block = 0;
- } while (block != start);
-
- /*
- * If the directory has grown while we were searching, then
- * search the last part of the directory before giving up.
- */
- block = nblocks;
- nblocks = i_size_read(dir) >> sb->s_blocksize_bits;
- if (block < nblocks) {
- start = 0;
- goto restart;
- }
-
-cleanup_and_exit:
- /* Clean up the read-ahead blocks */
- for (; ra_ptr < ra_max; ra_ptr++)
- brelse(bh_use[ra_ptr]);
-
- mlog_exit_ptr(ret);
- return ret;
-}
-
static int ocfs2_blkno_stringify(u64 blkno, char *name)
{
int status, namelen;
mutex_lock(&orphan_dir_inode->i_mutex);
- status = ocfs2_meta_lock(orphan_dir_inode, &orphan_dir_bh, 1);
+ status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
if (status < 0) {
mlog_errno(status);
goto leave;
orphan_dir_bh, name,
OCFS2_ORPHAN_NAMELEN, de_bh);
if (status < 0) {
- ocfs2_meta_unlock(orphan_dir_inode, 1);
+ ocfs2_inode_unlock(orphan_dir_inode, 1);
mlog_errno(status);
goto leave;
projects / linux-2.6-omap-h63xx.git / blobdiff