Commit 953e622b authored by Eric Sandeen's avatar Eric Sandeen Committed by Theodore Ts'o
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ext4: use atomic functions to set bh_state 



Use the BUFFER_FNS functions (set_buffer_foo) to set buffer
head state atomically instead of nonatomic __set_bit().

Signed-off-by: default avatarEric Sandeen <sandeen@redhat.com>
Signed-off-by: default avatarMingming Cao <cmm@us.ibm.com>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 47b4a50b

fs/ext4/extents.c

+3 −4
Original line number Diff line number Diff line
@@ -2622,8 +2622,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode, 
				 */

				if (allocated > max_blocks)

					allocated = max_blocks;

				/* mark the buffer unwritten */

				__set_bit(BH_Unwritten, &bh_result->b_state);

				set_buffer_unwritten(bh_result);

				goto out2;

			}
@@ -2729,7 +2728,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode, 
	if (extend_disksize && inode->i_size > EXT4_I(inode)->i_disksize)

		EXT4_I(inode)->i_disksize = inode->i_size;



	__set_bit(BH_New, &bh_result->b_state);

	set_buffer_new(bh_result);



	/* Cache only when it is _not_ an uninitialized extent */

	if (create != EXT4_CREATE_UNINITIALIZED_EXT)
@@ -2739,7 +2738,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode, 
	if (allocated > max_blocks)

		allocated = max_blocks;

	ext4_ext_show_leaf(inode, path);

	__set_bit(BH_Mapped, &bh_result->b_state);

	set_buffer_mapped(bh_result);

	bh_result->b_bdev = inode->i_sb->s_bdev;

	bh_result->b_blocknr = newblock;

out2: