Lines Matching refs:bh
67 #define HDR(bh) ((struct ext2_xattr_header *)((bh)->b_data)) argument
69 #define FIRST_ENTRY(bh) ENTRY(HDR(bh)+1) argument
79 # define ea_bdebug(bh, f...) do { \ argument
82 bdevname(bh->b_bdev, b), \
83 (unsigned long) bh->b_blocknr); \
150 struct buffer_head *bh = NULL; in ext2_xattr_get() local
171 bh = sb_bread(inode->i_sb, EXT2_I(inode)->i_file_acl); in ext2_xattr_get()
173 if (!bh) in ext2_xattr_get()
175 ea_bdebug(bh, "b_count=%d, refcount=%d", in ext2_xattr_get()
176 atomic_read(&(bh->b_count)), le32_to_cpu(HDR(bh)->h_refcount)); in ext2_xattr_get()
177 end = bh->b_data + bh->b_size; in ext2_xattr_get()
178 if (HDR(bh)->h_magic != cpu_to_le32(EXT2_XATTR_MAGIC) || in ext2_xattr_get()
179 HDR(bh)->h_blocks != cpu_to_le32(1)) { in ext2_xattr_get()
188 entry = FIRST_ENTRY(bh); in ext2_xattr_get()
200 if (ext2_xattr_cache_insert(ext2_mb_cache, bh)) in ext2_xattr_get()
213 if (ext2_xattr_cache_insert(ext2_mb_cache, bh)) in ext2_xattr_get()
220 memcpy(buffer, bh->b_data + le16_to_cpu(entry->e_value_offs), in ext2_xattr_get()
226 brelse(bh); in ext2_xattr_get()
246 struct buffer_head *bh = NULL; in ext2_xattr_list() local
261 bh = sb_bread(inode->i_sb, EXT2_I(inode)->i_file_acl); in ext2_xattr_list()
263 if (!bh) in ext2_xattr_list()
265 ea_bdebug(bh, "b_count=%d, refcount=%d", in ext2_xattr_list()
266 atomic_read(&(bh->b_count)), le32_to_cpu(HDR(bh)->h_refcount)); in ext2_xattr_list()
267 end = bh->b_data + bh->b_size; in ext2_xattr_list()
268 if (HDR(bh)->h_magic != cpu_to_le32(EXT2_XATTR_MAGIC) || in ext2_xattr_list()
269 HDR(bh)->h_blocks != cpu_to_le32(1)) { in ext2_xattr_list()
278 entry = FIRST_ENTRY(bh); in ext2_xattr_list()
286 if (ext2_xattr_cache_insert(ext2_mb_cache, bh)) in ext2_xattr_list()
290 for (entry = FIRST_ENTRY(bh); !IS_LAST_ENTRY(entry); in ext2_xattr_list()
312 brelse(bh); in ext2_xattr_list()
361 struct buffer_head *bh = NULL; in ext2_xattr_set() local
393 bh = sb_bread(sb, EXT2_I(inode)->i_file_acl); in ext2_xattr_set()
395 if (!bh) in ext2_xattr_set()
397 ea_bdebug(bh, "b_count=%d, refcount=%d", in ext2_xattr_set()
398 atomic_read(&(bh->b_count)), in ext2_xattr_set()
399 le32_to_cpu(HDR(bh)->h_refcount)); in ext2_xattr_set()
400 header = HDR(bh); in ext2_xattr_set()
401 end = bh->b_data + bh->b_size; in ext2_xattr_set()
411 here = FIRST_ENTRY(bh); in ext2_xattr_set()
484 lock_buffer(bh); in ext2_xattr_set()
488 ea_bdebug(bh, "modifying in-place"); in ext2_xattr_set()
494 hash, bh->b_blocknr); in ext2_xattr_set()
500 unlock_buffer(bh); in ext2_xattr_set()
501 ea_bdebug(bh, "cloning"); in ext2_xattr_set()
502 header = kmalloc(bh->b_size, GFP_KERNEL); in ext2_xattr_set()
506 memcpy(header, HDR(bh), bh->b_size); in ext2_xattr_set()
509 offset = (char *)here - bh->b_data; in ext2_xattr_set()
511 offset = (char *)last - bh->b_data; in ext2_xattr_set()
598 if (bh && header == HDR(bh)) in ext2_xattr_set()
599 unlock_buffer(bh); /* we were modifying in-place. */ in ext2_xattr_set()
600 error = ext2_xattr_set2(inode, bh, NULL); in ext2_xattr_set()
603 if (bh && header == HDR(bh)) in ext2_xattr_set()
604 unlock_buffer(bh); /* we were modifying in-place. */ in ext2_xattr_set()
605 error = ext2_xattr_set2(inode, bh, header); in ext2_xattr_set()
609 if (!(bh && header == HDR(bh))) in ext2_xattr_set()
611 brelse(bh); in ext2_xattr_set()
758 struct buffer_head *bh = NULL; in ext2_xattr_delete_inode() local
763 bh = sb_bread(inode->i_sb, EXT2_I(inode)->i_file_acl); in ext2_xattr_delete_inode()
764 if (!bh) { in ext2_xattr_delete_inode()
770 ea_bdebug(bh, "b_count=%d", atomic_read(&(bh->b_count))); in ext2_xattr_delete_inode()
771 if (HDR(bh)->h_magic != cpu_to_le32(EXT2_XATTR_MAGIC) || in ext2_xattr_delete_inode()
772 HDR(bh)->h_blocks != cpu_to_le32(1)) { in ext2_xattr_delete_inode()
778 lock_buffer(bh); in ext2_xattr_delete_inode()
779 if (HDR(bh)->h_refcount == cpu_to_le32(1)) { in ext2_xattr_delete_inode()
780 __u32 hash = le32_to_cpu(HDR(bh)->h_hash); in ext2_xattr_delete_inode()
787 hash, bh->b_blocknr); in ext2_xattr_delete_inode()
789 get_bh(bh); in ext2_xattr_delete_inode()
790 bforget(bh); in ext2_xattr_delete_inode()
791 unlock_buffer(bh); in ext2_xattr_delete_inode()
793 le32_add_cpu(&HDR(bh)->h_refcount, -1); in ext2_xattr_delete_inode()
794 ea_bdebug(bh, "refcount now=%d", in ext2_xattr_delete_inode()
795 le32_to_cpu(HDR(bh)->h_refcount)); in ext2_xattr_delete_inode()
796 unlock_buffer(bh); in ext2_xattr_delete_inode()
797 mark_buffer_dirty(bh); in ext2_xattr_delete_inode()
799 sync_dirty_buffer(bh); in ext2_xattr_delete_inode()
805 brelse(bh); in ext2_xattr_delete_inode()
818 ext2_xattr_cache_insert(struct mb2_cache *cache, struct buffer_head *bh) in ext2_xattr_cache_insert() argument
820 __u32 hash = le32_to_cpu(HDR(bh)->h_hash); in ext2_xattr_cache_insert()
823 error = mb2_cache_entry_create(cache, GFP_NOFS, hash, bh->b_blocknr); in ext2_xattr_cache_insert()
826 ea_bdebug(bh, "already in cache"); in ext2_xattr_cache_insert()
830 ea_bdebug(bh, "inserting [%x]", (int)hash); in ext2_xattr_cache_insert()
895 struct buffer_head *bh; in ext2_xattr_cache_find() local
897 bh = sb_bread(inode->i_sb, ce->e_block); in ext2_xattr_cache_find()
898 if (!bh) { in ext2_xattr_cache_find()
903 lock_buffer(bh); in ext2_xattr_cache_find()
915 unlock_buffer(bh); in ext2_xattr_cache_find()
916 brelse(bh); in ext2_xattr_cache_find()
918 } else if (le32_to_cpu(HDR(bh)->h_refcount) > in ext2_xattr_cache_find()
922 le32_to_cpu(HDR(bh)->h_refcount), in ext2_xattr_cache_find()
924 } else if (!ext2_xattr_cmp(header, HDR(bh))) { in ext2_xattr_cache_find()
925 ea_bdebug(bh, "b_count=%d", in ext2_xattr_cache_find()
926 atomic_read(&(bh->b_count))); in ext2_xattr_cache_find()
929 return bh; in ext2_xattr_cache_find()
931 unlock_buffer(bh); in ext2_xattr_cache_find()
932 brelse(bh); in ext2_xattr_cache_find()