From da5029563a0a026c64821b09e8e7b4fd81d3fe1b Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:49:33 +1100 Subject: fs: dcache scale d_unhashed Protect d_unhashed(dentry) condition with d_lock. This means keeping DCACHE_UNHASHED bit in synch with hash manipulations. Signed-off-by: Nick Piggin --- fs/ceph/dir.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'fs/ceph') diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 3ecf915a4550..571f270dca0f 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -136,6 +136,7 @@ more: fi->at_end = 1; goto out_unlock; } + spin_lock(&dentry->d_lock); if (!d_unhashed(dentry) && dentry->d_inode && ceph_snap(dentry->d_inode) != CEPH_SNAPDIR && ceph_ino(dentry->d_inode) != CEPH_INO_CEPH && @@ -145,13 +146,13 @@ more: dentry->d_name.len, dentry->d_name.name, di->offset, filp->f_pos, d_unhashed(dentry) ? " unhashed" : "", !dentry->d_inode ? " null" : ""); + spin_unlock(&dentry->d_lock); p = p->prev; dentry = list_entry(p, struct dentry, d_u.d_child); di = ceph_dentry(dentry); } - spin_lock(&dentry->d_lock); - dentry->d_count++; + dget_dlock(dentry); spin_unlock(&dentry->d_lock); spin_unlock(&dcache_lock); -- cgit v1.2.3