diff options
Diffstat (limited to 'fs/quota/dquot.c')
| -rw-r--r-- | fs/quota/dquot.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 29d447598642..21358f31923d 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -406,9 +406,11 @@ int dquot_acquire(struct dquot *dquot) struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); mutex_lock(&dquot->dq_lock); - down_write(&dqopt->dqio_sem); - if (!test_bit(DQ_READ_B, &dquot->dq_flags)) + if (!test_bit(DQ_READ_B, &dquot->dq_flags)) { + down_read(&dqopt->dqio_sem); ret = dqopt->ops[dquot->dq_id.type]->read_dqblk(dquot); + up_read(&dqopt->dqio_sem); + } if (ret < 0) goto out_iolock; /* Make sure flags update is visible after dquot has been filled */ @@ -416,12 +418,14 @@ int dquot_acquire(struct dquot *dquot) set_bit(DQ_READ_B, &dquot->dq_flags); /* Instantiate dquot if needed */ if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags) && !dquot->dq_off) { + down_write(&dqopt->dqio_sem); ret = dqopt->ops[dquot->dq_id.type]->commit_dqblk(dquot); /* Write the info if needed */ if (info_dirty(&dqopt->info[dquot->dq_id.type])) { ret2 = dqopt->ops[dquot->dq_id.type]->write_file_info( dquot->dq_sb, dquot->dq_id.type); } + up_write(&dqopt->dqio_sem); if (ret < 0) goto out_iolock; if (ret2 < 0) { @@ -436,7 +440,6 @@ int dquot_acquire(struct dquot *dquot) smp_mb__before_atomic(); set_bit(DQ_ACTIVE_B, &dquot->dq_flags); out_iolock: - up_write(&dqopt->dqio_sem); mutex_unlock(&dquot->dq_lock); return ret; } |