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fs: dcache scale d_unhashed

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Protect d_unhashed(dentry) condition with d_lock. This means keeping
DCACHE_UNHASHED bit in synch with hash manipulations.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
This commit is contained in:
Nick Piggin
2011-01-07 17:49:33 +11:00
parent b7ab39f631
commit da5029563a
10 changed files with 102 additions and 54 deletions
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5
fs/ocfs2/dcache.c
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@@ -174,13 +174,16 @@ struct dentry *ocfs2_find_local_alias(struct inode *inode,
list_for_each(p, &inode->i_dentry) {
dentry = list_entry(p, struct dentry, d_alias);
spin_lock(&dentry->d_lock);
if (ocfs2_match_dentry(dentry, parent_blkno, skip_unhashed)) {
mlog(0, "dentry found: %.*s\n",
dentry->d_name.len, dentry->d_name.name);
dget_locked(dentry);
dget_locked_dlock(dentry);
spin_unlock(&dentry->d_lock);
break;
}
spin_unlock(&dentry->d_lock);
dentry = NULL;
}