59 #define BHDR(bh) ((struct ext3_xattr_header *)((bh)->b_data))  argument
61 #define BFIRST(bh) ENTRY(BHDR(bh)+1)  argument
78 # define ea_bdebug(bh, f...) do { \  argument
81 			bdevname(bh->b_bdev, b), \
82 			(unsigned long) bh->b_blocknr); \
161 ext3_xattr_check_block(struct buffer_head *bh)  in ext3_xattr_check_block()  argument
165 	if (BHDR(bh)->h_magic != cpu_to_le32(EXT3_XATTR_MAGIC) ||  in ext3_xattr_check_block()
166 	    BHDR(bh)->h_blocks != cpu_to_le32(1))  in ext3_xattr_check_block()
168 	error = ext3_xattr_check_names(BFIRST(bh), bh->b_data + bh->b_size);  in ext3_xattr_check_block()
214 	struct buffer_head *bh = NULL;  in ext3_xattr_block_get()  local
226 	bh = sb_bread(inode->i_sb, EXT3_I(inode)->i_file_acl);  in ext3_xattr_block_get()
227 	if (!bh)  in ext3_xattr_block_get()
229 	ea_bdebug(bh, "b_count=%d, refcount=%d",  in ext3_xattr_block_get()
230 		atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));  in ext3_xattr_block_get()
231 	if (ext3_xattr_check_block(bh)) {  in ext3_xattr_block_get()
238 	ext3_xattr_cache_insert(bh);  in ext3_xattr_block_get()
239 	entry = BFIRST(bh);  in ext3_xattr_block_get()
240 	error = ext3_xattr_find_entry(&entry, name_index, name, bh->b_size, 1);  in ext3_xattr_block_get()
250 		memcpy(buffer, bh->b_data + le16_to_cpu(entry->e_value_offs),  in ext3_xattr_block_get()
256 	brelse(bh);  in ext3_xattr_block_get()
299 	brelse(iloc.bh);  in ext3_xattr_ibody_get()
359 	struct buffer_head *bh = NULL;  in ext3_xattr_block_list()  local
369 	bh = sb_bread(inode->i_sb, EXT3_I(inode)->i_file_acl);  in ext3_xattr_block_list()
371 	if (!bh)  in ext3_xattr_block_list()
373 	ea_bdebug(bh, "b_count=%d, refcount=%d",  in ext3_xattr_block_list()
374 		atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));  in ext3_xattr_block_list()
375 	if (ext3_xattr_check_block(bh)) {  in ext3_xattr_block_list()
382 	ext3_xattr_cache_insert(bh);  in ext3_xattr_block_list()
383 	error = ext3_xattr_list_entries(dentry, BFIRST(bh), buffer, buffer_size);  in ext3_xattr_block_list()
386 	brelse(bh);  in ext3_xattr_block_list()
416 	brelse(iloc.bh);  in ext3_xattr_ibody_list()
474 			 struct buffer_head *bh)  in ext3_xattr_release_block()  argument
479 	ce = mb_cache_entry_get(ext3_xattr_cache, bh->b_bdev, bh->b_blocknr);  in ext3_xattr_release_block()
480 	error = ext3_journal_get_write_access(handle, bh);  in ext3_xattr_release_block()
484 	lock_buffer(bh);  in ext3_xattr_release_block()
486 	if (BHDR(bh)->h_refcount == cpu_to_le32(1)) {  in ext3_xattr_release_block()
487 		ea_bdebug(bh, "refcount now=0; freeing");  in ext3_xattr_release_block()
490 		ext3_free_blocks(handle, inode, bh->b_blocknr, 1);  in ext3_xattr_release_block()
491 		get_bh(bh);  in ext3_xattr_release_block()
492 		ext3_forget(handle, 1, inode, bh, bh->b_blocknr);  in ext3_xattr_release_block()
494 		le32_add_cpu(&BHDR(bh)->h_refcount, -1);  in ext3_xattr_release_block()
495 		error = ext3_journal_dirty_metadata(handle, bh);  in ext3_xattr_release_block()
499 		ea_bdebug(bh, "refcount now=%d; releasing",  in ext3_xattr_release_block()
500 			  le32_to_cpu(BHDR(bh)->h_refcount));  in ext3_xattr_release_block()
504 	unlock_buffer(bh);  in ext3_xattr_release_block()
627 	struct buffer_head *bh;  member
642 		bs->bh = sb_bread(sb, EXT3_I(inode)->i_file_acl);  in ext3_xattr_block_find()
644 		if (!bs->bh)  in ext3_xattr_block_find()
646 		ea_bdebug(bs->bh, "b_count=%d, refcount=%d",  in ext3_xattr_block_find()
647 			atomic_read(&(bs->bh->b_count)),  in ext3_xattr_block_find()
648 			le32_to_cpu(BHDR(bs->bh)->h_refcount));  in ext3_xattr_block_find()
649 		if (ext3_xattr_check_block(bs->bh)) {  in ext3_xattr_block_find()
657 		bs->s.base = BHDR(bs->bh);  in ext3_xattr_block_find()
658 		bs->s.first = BFIRST(bs->bh);  in ext3_xattr_block_find()
659 		bs->s.end = bs->bh->b_data + bs->bh->b_size;  in ext3_xattr_block_find()
662 					      i->name, bs->bh->b_size, 1);  in ext3_xattr_block_find()
689 		ce = mb_cache_entry_get(ext3_xattr_cache, bs->bh->b_bdev,  in ext3_xattr_block_set()
690 					bs->bh->b_blocknr);  in ext3_xattr_block_set()
691 		error = ext3_journal_get_write_access(handle, bs->bh);  in ext3_xattr_block_set()
694 		lock_buffer(bs->bh);  in ext3_xattr_block_set()
701 			ea_bdebug(bs->bh, "modifying in-place");  in ext3_xattr_block_set()
707 				ext3_xattr_cache_insert(bs->bh);  in ext3_xattr_block_set()
709 			unlock_buffer(bs->bh);  in ext3_xattr_block_set()
714 								    bs->bh);  in ext3_xattr_block_set()
719 			int offset = (char *)s->here - bs->bh->b_data;  in ext3_xattr_block_set()
721 			unlock_buffer(bs->bh);  in ext3_xattr_block_set()
722 			journal_release_buffer(handle, bs->bh);  in ext3_xattr_block_set()
728 			ea_bdebug(bs->bh, "cloning");  in ext3_xattr_block_set()
729 			s->base = kmalloc(bs->bh->b_size, GFP_NOFS);  in ext3_xattr_block_set()
733 			memcpy(s->base, BHDR(bs->bh), bs->bh->b_size);  in ext3_xattr_block_set()
737 			s->end = s->base + bs->bh->b_size;  in ext3_xattr_block_set()
767 			if (new_bh == bs->bh)  in ext3_xattr_block_set()
791 		} else if (bs->bh && s->base == bs->bh->b_data) {  in ext3_xattr_block_set()
793 			ea_bdebug(bs->bh, "keeping this block");  in ext3_xattr_block_set()
794 			new_bh = bs->bh;  in ext3_xattr_block_set()
841 	if (bs->bh && bs->bh != new_bh)  in ext3_xattr_block_set()
842 		ext3_xattr_release_block(handle, inode, bs->bh);  in ext3_xattr_block_set()
849 	if (!(bs->bh && s->base == bs->bh->b_data))  in ext3_xattr_block_set()
968 	error = ext3_journal_get_write_access(handle, is.iloc.bh);  in ext3_xattr_set_handle()
1031 		is.iloc.bh = NULL;  in ext3_xattr_set_handle()
1037 	brelse(is.iloc.bh);  in ext3_xattr_set_handle()
1038 	brelse(bs.bh);  in ext3_xattr_set_handle()
1088 	struct buffer_head *bh = NULL;  in ext3_xattr_delete_inode()  local
1092 	bh = sb_bread(inode->i_sb, EXT3_I(inode)->i_file_acl);  in ext3_xattr_delete_inode()
1093 	if (!bh) {  in ext3_xattr_delete_inode()
1099 	if (BHDR(bh)->h_magic != cpu_to_le32(EXT3_XATTR_MAGIC) ||  in ext3_xattr_delete_inode()
1100 	    BHDR(bh)->h_blocks != cpu_to_le32(1)) {  in ext3_xattr_delete_inode()
1106 	ext3_xattr_release_block(handle, inode, bh);  in ext3_xattr_delete_inode()
1110 	brelse(bh);  in ext3_xattr_delete_inode()
1133 ext3_xattr_cache_insert(struct buffer_head *bh)  in ext3_xattr_cache_insert()  argument
1135 	__u32 hash = le32_to_cpu(BHDR(bh)->h_hash);  in ext3_xattr_cache_insert()
1141 		ea_bdebug(bh, "out of memory");  in ext3_xattr_cache_insert()
1144 	error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, hash);  in ext3_xattr_cache_insert()
1148 			ea_bdebug(bh, "already in cache");  in ext3_xattr_cache_insert()
1152 		ea_bdebug(bh, "inserting [%x]", (int)hash);  in ext3_xattr_cache_insert()
1219 		struct buffer_head *bh;  in ext3_xattr_cache_find()  local
1226 		bh = sb_bread(inode->i_sb, ce->e_block);  in ext3_xattr_cache_find()
1227 		if (!bh) {  in ext3_xattr_cache_find()
1231 		} else if (le32_to_cpu(BHDR(bh)->h_refcount) >=  in ext3_xattr_cache_find()
1235 				  le32_to_cpu(BHDR(bh)->h_refcount),  in ext3_xattr_cache_find()
1237 		} else if (ext3_xattr_cmp(header, BHDR(bh)) == 0) {  in ext3_xattr_cache_find()
1239 			return bh;  in ext3_xattr_cache_find()
1241 		brelse(bh);  in ext3_xattr_cache_find()