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authorNick Piggin <npiggin@kernel.dk>2011-01-07 17:50:06 +1100
committerNick Piggin <npiggin@kernel.dk>2011-01-07 17:50:31 +1100
commit873feea09ebc980cbd3631b767356ce1eee65ec1 (patch)
tree59a8fce9b138086abee7cf845f62ff70a390cf81 /fs/nfs/getroot.c
parentceb5bdc2d246f6d81cf61ed70f325308a11821d2 (diff)
fs: dcache per-inode inode alias locking
dcache_inode_lock can be replaced with per-inode locking. Use existing inode->i_lock for this. This is slightly non-trivial because we sometimes need to find the inode from the dentry, which requires d_inode to be stabilised (either with refcount or d_lock). Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/nfs/getroot.c')
-rw-r--r--fs/nfs/getroot.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index c3a5a1126833..5596c6a2881e 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -63,11 +63,11 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i
* This again causes shrink_dcache_for_umount_subtree() to
* Oops, since the test for IS_ROOT() will fail.
*/
- spin_lock(&dcache_inode_lock);
+ spin_lock(&sb->s_root->d_inode->i_lock);
spin_lock(&sb->s_root->d_lock);
list_del_init(&sb->s_root->d_alias);
spin_unlock(&sb->s_root->d_lock);
- spin_unlock(&dcache_inode_lock);
+ spin_unlock(&sb->s_root->d_inode->i_lock);
}
return 0;
}