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ocfs2: needs ->d_lock to poke in ->d_parent->d_inode from ->d_revalidate()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-09-29 14:59:30 -04:00
parent 4947555584
commit 7b9a2378b4
1 changed files with 4 additions and 3 deletions
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7
fs/ocfs2/dcache.c
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@ -70,9 +70,10 @@ static int ocfs2_dentry_revalidate(struct dentry *dentry, unsigned int flags)
*/
if (inode == NULL) {
unsigned long gen = (unsigned long) dentry->d_fsdata;
unsigned long pgen =
OCFS2_I(dentry->d_parent->d_inode)->ip_dir_lock_gen;
unsigned long pgen;
spin_lock(&dentry->d_lock);
pgen = OCFS2_I(dentry->d_parent->d_inode)->ip_dir_lock_gen;
spin_unlock(&dentry->d_lock);
trace_ocfs2_dentry_revalidate_negative(dentry->d_name.len,
dentry->d_name.name,
pgen, gen);