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ceph: use ihold when we already have an inode ref

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We should use ihold whenever we already have a stable inode ref, even
when we aren't holding i_lock.  This avoids adding new and unnecessary
locking dependencies.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil
2011-05-27 09:24:26 -07:00
parent db3540522e
commit 70b666c3b4
10 changed files with 37 additions and 28 deletions
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fs/ceph/snap.c
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@@ -722,7 +722,7 @@ static void flush_snaps(struct ceph_mds_client *mdsc)
ci = list_first_entry(&mdsc->snap_flush_list,
struct ceph_inode_info, i_snap_flush_item);
inode = &ci->vfs_inode;
igrab(inode);
ihold(inode);
spin_unlock(&mdsc->snap_flush_lock);
spin_lock(&inode->i_lock);
__ceph_flush_snaps(ci, &session, 0);