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nfsd-6.8 fixes:

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- Address a deadlock regression in RELEASE_LOCKOWNER
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Merge tag 'nfsd-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd fix from Chuck Lever:

 - Address a deadlock regression in RELEASE_LOCKOWNER

* tag 'nfsd-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  nfsd: don't take fi_lock in nfsd_break_deleg_cb()
This commit is contained in:
Linus Torvalds 2024-02-07 17:48:15 +00:00
commit c8d80f83de
1 changed files with 5 additions and 6 deletions
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11
fs/nfsd/nfs4state.c
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@ -4945,10 +4945,8 @@ nfsd_break_deleg_cb(struct file_lock *fl)
*/
fl->fl_break_time = 0;
spin_lock(&fp->fi_lock);
fp->fi_had_conflict = true;
nfsd_break_one_deleg(dp);
spin_unlock(&fp->fi_lock);
return false;
}
@ -5557,12 +5555,13 @@ nfs4_set_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp,
if (status)
goto out_unlock;
status = -EAGAIN;
if (fp->fi_had_conflict)
goto out_unlock;
spin_lock(&state_lock);
spin_lock(&fp->fi_lock);
if (fp->fi_had_conflict)
status = -EAGAIN;
else
status = hash_delegation_locked(dp, fp);
status = hash_delegation_locked(dp, fp);
spin_unlock(&fp->fi_lock);
spin_unlock(&state_lock);