static int ocfs2_extend_dir(struct ocfs2_super *osb,
struct inode *dir,
struct buffer_head *parent_fe_bh,
+ unsigned int blocks_wanted,
struct buffer_head **new_de_bh);
static int ocfs2_do_extend_dir(struct super_block *sb,
handle_t *handle,
return ocfs2_find_entry_el(name, namelen, dir, res_dir);
}
+/*
+ * Update inode number and type of a previously found directory entry.
+ */
int ocfs2_update_entry(struct inode *dir, handle_t *handle,
struct buffer_head *de_bh, struct ocfs2_dir_entry *de,
struct inode *new_entry_inode)
{
int ret;
+ /*
+ * The same code works fine for both inline-data and extent
+ * based directories, so no need to split this up.
+ */
+
ret = ocfs2_journal_access(handle, dir, de_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
return ret;
}
-/*
- * ocfs2_delete_entry deletes a directory entry by merging it with the
- * previous entry
- */
-int ocfs2_delete_entry(handle_t *handle,
- struct inode *dir,
- struct ocfs2_dir_entry *de_del,
- struct buffer_head *bh)
+static int __ocfs2_delete_entry(handle_t *handle, struct inode *dir,
+ struct ocfs2_dir_entry *de_del,
+ struct buffer_head *bh, char *first_de,
+ unsigned int bytes)
{
struct ocfs2_dir_entry *de, *pde;
int i, status = -ENOENT;
i = 0;
pde = NULL;
- de = (struct ocfs2_dir_entry *) bh->b_data;
- while (i < bh->b_size) {
+ de = (struct ocfs2_dir_entry *) first_de;
+ while (i < bytes) {
if (!ocfs2_check_dir_entry(dir, de, bh, i)) {
status = -EIO;
mlog_errno(status);
return status;
}
+static inline int ocfs2_delete_entry_id(handle_t *handle,
+ struct inode *dir,
+ struct ocfs2_dir_entry *de_del,
+ struct buffer_head *bh)
+{
+ int ret;
+ struct buffer_head *di_bh = NULL;
+ struct ocfs2_dinode *di;
+ struct ocfs2_inline_data *data;
+
+ ret = ocfs2_read_block(OCFS2_SB(dir->i_sb), OCFS2_I(dir)->ip_blkno,
+ &di_bh, OCFS2_BH_CACHED, dir);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ di = (struct ocfs2_dinode *)di_bh->b_data;
+ data = &di->id2.i_data;
+
+ ret = __ocfs2_delete_entry(handle, dir, de_del, bh, data->id_data,
+ i_size_read(dir));
+
+ brelse(di_bh);
+out:
+ return ret;
+}
+
+static inline int ocfs2_delete_entry_el(handle_t *handle,
+ struct inode *dir,
+ struct ocfs2_dir_entry *de_del,
+ struct buffer_head *bh)
+{
+ return __ocfs2_delete_entry(handle, dir, de_del, bh, bh->b_data,
+ bh->b_size);
+}
+
+/*
+ * ocfs2_delete_entry deletes a directory entry by merging it with the
+ * previous entry
+ */
+int ocfs2_delete_entry(handle_t *handle,
+ struct inode *dir,
+ struct ocfs2_dir_entry *de_del,
+ struct buffer_head *bh)
+{
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ return ocfs2_delete_entry_id(handle, dir, de_del, bh);
+
+ return ocfs2_delete_entry_el(handle, dir, de_del, bh);
+}
+
/*
* Check whether 'de' has enough room to hold an entry of
* 'new_rec_len' bytes.
unsigned long offset;
unsigned short rec_len;
struct ocfs2_dir_entry *de, *de1;
- struct super_block *sb;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)parent_fe_bh->b_data;
+ struct super_block *sb = dir->i_sb;
int retval, status;
+ unsigned int size = sb->s_blocksize;
+ char *data_start = insert_bh->b_data;
mlog_entry_void();
- sb = dir->i_sb;
-
if (!namelen)
return -EINVAL;
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ data_start = di->id2.i_data.id_data;
+ size = i_size_read(dir);
+
+ BUG_ON(insert_bh != parent_fe_bh);
+ }
+
rec_len = OCFS2_DIR_REC_LEN(namelen);
offset = 0;
- de = (struct ocfs2_dir_entry *) insert_bh->b_data;
+ de = (struct ocfs2_dir_entry *) data_start;
while (1) {
- BUG_ON((char *)de >= sb->s_blocksize + insert_bh->b_data);
+ BUG_ON((char *)de >= (size + data_start));
+
/* These checks should've already been passed by the
* prepare function, but I guess we can leave them
* here anyway. */
return !priv.seen_other;
}
-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 void ocfs2_fill_initial_dirents(struct inode *inode,
+ struct inode *parent,
+ char *start, unsigned int size)
+{
+ struct ocfs2_dir_entry *de = (struct ocfs2_dir_entry *)start;
+
+ 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(size - OCFS2_DIR_REC_LEN(1));
+ de->name_len = 2;
+ strcpy(de->name, "..");
+ ocfs2_set_de_type(de, S_IFDIR);
+}
+
+/*
+ * This works together with code in ocfs2_mknod_locked() which sets
+ * the inline-data flag and initializes the inline-data section.
+ */
+static int ocfs2_fill_new_dir_id(struct ocfs2_super *osb,
+ handle_t *handle,
+ struct inode *parent,
+ struct inode *inode,
+ struct buffer_head *di_bh)
+{
+ int ret;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ struct ocfs2_inline_data *data = &di->id2.i_data;
+ unsigned int size = le16_to_cpu(data->id_count);
+
+ ret = ocfs2_journal_access(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ocfs2_fill_initial_dirents(inode, parent, data->id_data, size);
+
+ ocfs2_journal_dirty(handle, di_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ i_size_write(inode, size);
+ inode->i_nlink = 2;
+ inode->i_blocks = ocfs2_inode_sector_count(inode);
+
+ ret = ocfs2_mark_inode_dirty(handle, inode, di_bh);
+ if (ret < 0)
+ mlog_errno(ret);
+
+out:
+ return ret;
+}
+
+static int ocfs2_fill_new_dir_el(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();
}
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);
+ ocfs2_fill_initial_dirents(inode, parent, new_bh->b_data,
+ osb->sb->s_blocksize);
status = ocfs2_journal_dirty(handle, new_bh);
if (status < 0) {
return status;
}
+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)
+{
+ BUG_ON(!ocfs2_supports_inline_data(osb) && data_ac == NULL);
+
+ if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ return ocfs2_fill_new_dir_id(osb, handle, parent, inode, fe_bh);
+
+ return ocfs2_fill_new_dir_el(osb, handle, parent, inode, fe_bh,
+ data_ac);
+}
+
+static void ocfs2_expand_last_dirent(char *start, unsigned int old_size,
+ unsigned int new_size)
+{
+ struct ocfs2_dir_entry *de;
+ struct ocfs2_dir_entry *prev_de;
+ char *de_buf, *limit;
+ unsigned int bytes = new_size - old_size;
+
+ limit = start + old_size;
+ de_buf = start;
+ de = (struct ocfs2_dir_entry *)de_buf;
+ do {
+ prev_de = de;
+ de_buf += le16_to_cpu(de->rec_len);
+ de = (struct ocfs2_dir_entry *)de_buf;
+ } while (de_buf < limit);
+
+ le16_add_cpu(&prev_de->rec_len, bytes);
+}
+
+/*
+ * We allocate enough clusters to fulfill "blocks_wanted", but set
+ * i_size to exactly one block. Ocfs2_extend_dir() will handle the
+ * rest automatically for us.
+ *
+ * *first_block_bh is a pointer to the 1st data block allocated to the
+ * directory.
+ */
+static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh,
+ unsigned int blocks_wanted,
+ struct buffer_head **first_block_bh)
+{
+ int ret, credits = OCFS2_INLINE_TO_EXTENTS_CREDITS;
+ u32 alloc, bit_off, len;
+ struct super_block *sb = dir->i_sb;
+ u64 blkno, bytes = blocks_wanted << sb->s_blocksize_bits;
+ struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
+ struct ocfs2_inode_info *oi = OCFS2_I(dir);
+ struct ocfs2_alloc_context *data_ac;
+ struct buffer_head *dirdata_bh = NULL;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ handle_t *handle;
+
+ alloc = ocfs2_clusters_for_bytes(sb, bytes);
+
+ /*
+ * We should never need more than 2 clusters for this -
+ * maximum dirent size is far less than one block. In fact,
+ * the only time we'd need more than one cluster is if
+ * blocksize == clustersize and the dirent won't fit in the
+ * extra space that the expansion to a single block gives. As
+ * of today, that only happens on 4k/4k file systems.
+ */
+ BUG_ON(alloc > 2);
+
+ ret = ocfs2_reserve_clusters(osb, alloc, &data_ac);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ down_write(&oi->ip_alloc_sem);
+
+ /*
+ * Prepare for worst case allocation scenario of two seperate
+ * extents.
+ */
+ if (alloc == 2)
+ credits += OCFS2_SUBALLOC_ALLOC;
+
+ handle = ocfs2_start_trans(osb, credits);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out_sem;
+ }
+
+ /*
+ * Try to claim as many clusters as the bitmap can give though
+ * if we only get one now, that's enough to continue. The rest
+ * will be claimed after the conversion to extents.
+ */
+ ret = ocfs2_claim_clusters(osb, handle, data_ac, 1, &bit_off, &len);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ /*
+ * Operations are carefully ordered so that we set up the new
+ * data block first. The conversion from inline data to
+ * extents follows.
+ */
+ blkno = ocfs2_clusters_to_blocks(dir->i_sb, bit_off);
+ dirdata_bh = sb_getblk(sb, blkno);
+ if (!dirdata_bh) {
+ ret = -EIO;
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ ocfs2_set_new_buffer_uptodate(dir, dirdata_bh);
+
+ ret = ocfs2_journal_access(handle, dir, dirdata_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ memcpy(dirdata_bh->b_data, di->id2.i_data.id_data, i_size_read(dir));
+ memset(dirdata_bh->b_data + i_size_read(dir), 0,
+ sb->s_blocksize - i_size_read(dir));
+ ocfs2_expand_last_dirent(dirdata_bh->b_data, i_size_read(dir),
+ sb->s_blocksize);
+
+ ret = ocfs2_journal_dirty(handle, dirdata_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ /*
+ * Set extent, i_size, etc on the directory. After this, the
+ * inode should contain the same exact dirents as before and
+ * be fully accessible from system calls.
+ *
+ * We let the later dirent insert modify c/mtime - to the user
+ * the data hasn't changed.
+ */
+ ret = ocfs2_journal_access(handle, dir, di_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ spin_lock(&oi->ip_lock);
+ oi->ip_dyn_features &= ~OCFS2_INLINE_DATA_FL;
+ di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features);
+ spin_unlock(&oi->ip_lock);
+
+ ocfs2_dinode_new_extent_list(dir, di);
+
+ i_size_write(dir, sb->s_blocksize);
+ dir->i_mtime = dir->i_ctime = CURRENT_TIME;
+
+ di->i_size = cpu_to_le64(sb->s_blocksize);
+ di->i_ctime = di->i_mtime = cpu_to_le64(dir->i_ctime.tv_sec);
+ di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(dir->i_ctime.tv_nsec);
+ dir->i_blocks = ocfs2_inode_sector_count(dir);
+
+ /*
+ * This should never fail as our extent list is empty and all
+ * related blocks have been journaled already.
+ */
+ ret = ocfs2_insert_extent(osb, handle, dir, di_bh, 0, blkno, len, 0,
+ NULL);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = ocfs2_journal_dirty(handle, di_bh);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+
+ /*
+ * We asked for two clusters, but only got one in the 1st
+ * pass. Claim the 2nd cluster as a separate extent.
+ */
+ if (alloc > len) {
+ ret = ocfs2_claim_clusters(osb, handle, data_ac, 1, &bit_off,
+ &len);
+ if (ret) {
+ mlog_errno(ret);
+ goto out_commit;
+ }
+ blkno = ocfs2_clusters_to_blocks(dir->i_sb, bit_off);
+
+ ret = ocfs2_insert_extent(osb, handle, dir, di_bh, 1, blkno,
+ len, 0, NULL);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ *first_block_bh = dirdata_bh;
+ dirdata_bh = NULL;
+
+out_commit:
+ ocfs2_commit_trans(osb, handle);
+
+out_sem:
+ up_write(&oi->ip_alloc_sem);
+
+out:
+ if (data_ac)
+ ocfs2_free_alloc_context(data_ac);
+
+ brelse(dirdata_bh);
+
+ return ret;
+}
+
/* returns a bh of the 1st new block in the allocation. */
static int ocfs2_do_extend_dir(struct super_block *sb,
handle_t *handle,
return status;
}
-/* assumes you already have a cluster lock on the directory. */
+/*
+ * Assumes you already have a cluster lock on the directory.
+ *
+ * 'blocks_wanted' is only used if we have an inline directory which
+ * is to be turned into an extent based one. The size of the dirent to
+ * insert might be larger than the space gained by growing to just one
+ * block, so we may have to grow the inode by two blocks in that case.
+ */
static int ocfs2_extend_dir(struct ocfs2_super *osb,
struct inode *dir,
struct buffer_head *parent_fe_bh,
+ unsigned int blocks_wanted,
struct buffer_head **new_de_bh)
{
int status = 0;
mlog_entry_void();
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ status = ocfs2_expand_inline_dir(dir, parent_fe_bh,
+ blocks_wanted, &new_bh);
+ if (status) {
+ mlog_errno(status);
+ goto bail;
+ }
+
+ if (blocks_wanted == 1) {
+ /*
+ * If the new dirent will fit inside the space
+ * created by pushing out to one block, then
+ * we can complete the operation
+ * here. Otherwise we have to expand i_size
+ * and format the 2nd block below.
+ */
+ BUG_ON(new_bh == NULL);
+ goto bail_bh;
+ }
+
+ /*
+ * Get rid of 'new_bh' - we want to format the 2nd
+ * data block and return that instead.
+ */
+ brelse(new_bh);
+ new_bh = NULL;
+
+ dir_i_size = i_size_read(dir);
+ credits = OCFS2_SIMPLE_DIR_EXTEND_CREDITS;
+ goto do_extend;
+ }
+
dir_i_size = i_size_read(dir);
mlog(0, "extending dir %llu (i_size = %lld)\n",
(unsigned long long)OCFS2_I(dir)->ip_blkno, dir_i_size);
credits = OCFS2_SIMPLE_DIR_EXTEND_CREDITS;
}
+do_extend:
down_write(&OCFS2_I(dir)->ip_alloc_sem);
drop_alloc_sem = 1;
goto bail;
}
+bail_bh:
*new_de_bh = new_bh;
get_bh(*new_de_bh);
bail:
return status;
}
-/*
- * Search the dir for a good spot, extending it if necessary. The
- * block containing an appropriate record is returned in ret_de_bh.
- */
-int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
- struct inode *dir,
- struct buffer_head *parent_fe_bh,
- const char *name,
- int namelen,
- struct buffer_head **ret_de_bh)
+static int ocfs2_find_dir_space_id(struct inode *dir, struct buffer_head *di_bh,
+ const char *name, int namelen,
+ struct buffer_head **ret_de_bh,
+ unsigned int *blocks_wanted)
{
- unsigned long offset;
- struct buffer_head * bh = NULL;
- unsigned short rec_len;
- struct ocfs2_dinode *fe;
- struct ocfs2_dir_entry *de;
- struct super_block *sb;
- int status;
+ int ret;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ struct ocfs2_dir_entry *de, *last_de = NULL;
+ char *de_buf, *limit;
+ unsigned long offset = 0;
+ unsigned int rec_len, new_rec_len;
+
+ de_buf = di->id2.i_data.id_data;
+ limit = de_buf + i_size_read(dir);
+ rec_len = OCFS2_DIR_REC_LEN(namelen);
- mlog_entry_void();
+ while (de_buf < limit) {
+ de = (struct ocfs2_dir_entry *)de_buf;
- mlog(0, "getting ready to insert namelen %d into dir %llu\n",
- namelen, (unsigned long long)OCFS2_I(dir)->ip_blkno);
+ if (!ocfs2_check_dir_entry(dir, de, di_bh, offset)) {
+ ret = -ENOENT;
+ goto out;
+ }
+ if (ocfs2_match(namelen, name, de)) {
+ ret = -EEXIST;
+ goto out;
+ }
+ if (ocfs2_dirent_would_fit(de, rec_len)) {
+ /* Ok, we found a spot. Return this bh and let
+ * the caller actually fill it in. */
+ *ret_de_bh = di_bh;
+ get_bh(*ret_de_bh);
+ ret = 0;
+ goto out;
+ }
- BUG_ON(!S_ISDIR(dir->i_mode));
- fe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
- BUG_ON(le64_to_cpu(fe->i_size) != i_size_read(dir));
+ last_de = de;
+ de_buf += le16_to_cpu(de->rec_len);
+ offset += le16_to_cpu(de->rec_len);
+ }
- sb = dir->i_sb;
+ /*
+ * We're going to require expansion of the directory - figure
+ * out how many blocks we'll need so that a place for the
+ * dirent can be found.
+ */
+ *blocks_wanted = 1;
+ new_rec_len = le16_to_cpu(last_de->rec_len) + (dir->i_sb->s_blocksize - i_size_read(dir));
+ if (new_rec_len < (rec_len + OCFS2_DIR_REC_LEN(last_de->name_len)))
+ *blocks_wanted = 2;
- if (!namelen) {
- status = -EINVAL;
- mlog_errno(status);
- goto bail;
- }
+ ret = -ENOSPC;
+out:
+ return ret;
+}
+
+static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
+ int namelen, struct buffer_head **ret_de_bh)
+{
+ unsigned long offset;
+ struct buffer_head *bh = NULL;
+ unsigned short rec_len;
+ struct ocfs2_dir_entry *de;
+ struct super_block *sb = dir->i_sb;
+ int status;
bh = ocfs2_bread(dir, 0, &status, 0);
if (!bh) {
bh = NULL;
if (i_size_read(dir) <= offset) {
- status = ocfs2_extend_dir(osb,
- dir,
- parent_fe_bh,
- &bh);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- BUG_ON(!bh);
- *ret_de_bh = bh;
- get_bh(*ret_de_bh);
+ /*
+ * Caller will have to expand this
+ * directory.
+ */
+ status = -ENOSPC;
goto bail;
}
bh = ocfs2_bread(dir,
mlog_exit(status);
return status;
}
+
+int ocfs2_prepare_dir_for_insert(struct ocfs2_super *osb,
+ struct inode *dir,
+ struct buffer_head *parent_fe_bh,
+ const char *name,
+ int namelen,
+ struct buffer_head **ret_de_bh)
+{
+ int ret;
+ unsigned int blocks_wanted = 1;
+ struct buffer_head *bh = NULL;
+
+ mlog(0, "getting ready to insert namelen %d into dir %llu\n",
+ namelen, (unsigned long long)OCFS2_I(dir)->ip_blkno);
+
+ *ret_de_bh = NULL;
+
+ if (!namelen) {
+ ret = -EINVAL;
+ mlog_errno(ret);
+ goto out;
+ }
+
+ if (OCFS2_I(dir)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ ret = ocfs2_find_dir_space_id(dir, parent_fe_bh, name,
+ namelen, &bh, &blocks_wanted);
+ } else
+ ret = ocfs2_find_dir_space_el(dir, name, namelen, &bh);
+
+ if (ret && ret != -ENOSPC) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ if (ret == -ENOSPC) {
+ /*
+ * We have to expand the directory to add this name.
+ */
+ BUG_ON(bh);
+
+ ret = ocfs2_extend_dir(osb, dir, parent_fe_bh, blocks_wanted,
+ &bh);
+ if (ret) {
+ if (ret != -ENOSPC)
+ mlog_errno(ret);
+ goto out;
+ }
+
+ BUG_ON(!bh);
+ }
+
+ *ret_de_bh = bh;
+ bh = NULL;
+out:
+ if (bh)
+ brelse(bh);
+ return ret;
+}
projects / linux-2.6 / commitdiff