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fs: inode split IO and LRU lists

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The use of the same inode list structure (inode->i_list) for two
different list constructs with different lifecycles and purposes
makes it impossible to separate the locking of the different
operations. Therefore, to enable the separation of the locking of
the writeback and reclaim lists, split the inode->i_list into two
separate lists dedicated to their specific tracking functions.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Nick Piggin
2010-10-21 11:49:30 +11:00
committed by Al Viro
parent a5491e0c7b
commit 7ccf19a804
5 changed files with 58 additions and 41 deletions
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2
fs/block_dev.c
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@@ -59,7 +59,7 @@ static void bdev_inode_switch_bdi(struct inode *inode,
spin_lock(&inode_lock);
inode->i_data.backing_dev_info = dst;
if (inode->i_state & I_DIRTY)
list_move(&inode->i_list, &dst->wb.b_dirty);
list_move(&inode->i_wb_list, &dst->wb.b_dirty);
spin_unlock(&inode_lock);
}