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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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6
fs/ceph/ioctl.c
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@@ -73,7 +73,8 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
USE_AUTH_MDS);
if (IS_ERR(req))
return PTR_ERR(req);
req->r_inode = igrab(inode);
req->r_inode = inode;
ihold(inode);
req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL;
req->r_args.setlayout.layout.fl_stripe_unit =
@@ -135,7 +136,8 @@ static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg)
if (IS_ERR(req))
return PTR_ERR(req);
req->r_inode = igrab(inode);
req->r_inode = inode;
ihold(inode);
req->r_args.setlayout.layout.fl_stripe_unit =
cpu_to_le32(l.stripe_unit);