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xfs: use hlist_add_fake 

XFS does not need it's inodes to actuall be hashed in the VFS inode
cache, but we require the inode to be marked hashed for the
writeback code to work.

Insted of using insert_inode_hash, which requires a second
inode_lock roundtrip after the partial merge of the inode
scalability patches in 2.6.37-rc simply use the new hlist_add_fake
helper to mark it hashed without requiring a lock or touching a
global cache line.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
wifi-calibration
Christoph Hellwig 2010-11-06 11:43:08 +00:00 committed by Alex Elder
parent 5d2bf8a55e
commit c6f6cd0608
1 changed files with 2 additions and 1 deletions
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3
fs/xfs/linux-2.6/xfs_iops.c
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@ -762,7 +762,8 @@ xfs_setup_inode(
inode->i_state = I_NEW;
inode_sb_list_add(inode);
insert_inode_hash(inode);
/* make the inode look hashed for the writeback code */
hlist_add_fake(&inode->i_hash);
inode->i_mode = ip->i_d.di_mode;
inode->i_nlink = ip->i_d.di_nlink;