xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fs: dcache per-inode inode alias locking

Browse Source 
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>
This commit is contained in:
Nick Piggin
2011-01-07 17:50:06 +11:00
parent ceb5bdc2d2
commit 873feea09e
9 changed files with 67 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
fs/ocfs2/dcache.c
View File

@@ -175,7 +175,7 @@ struct dentry *ocfs2_find_local_alias(struct inode *inode,
struct list_head *p;
struct dentry *dentry = NULL;
spin_lock(&dcache_inode_lock);
spin_lock(&inode->i_lock);
list_for_each(p, &inode->i_dentry) {
dentry = list_entry(p, struct dentry, d_alias);
@@ -193,7 +193,7 @@ struct dentry *ocfs2_find_local_alias(struct inode *inode,
dentry = NULL;
}
spin_unlock(&dcache_inode_lock);
spin_unlock(&inode->i_lock);
return dentry;
}