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| author | Jan Kara <jack@suse.cz> | 2017-08-02 11:54:26 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2017-08-17 22:00:24 +0200 |
| commit | 1e0b7cb062f227439a1d8e7921e85c8df52adc41 (patch) | |
| tree | b492f59d4d7c59f149e59b9b443edf3461b60ba1 /fs/quota | |
| parent | 4580b30ea887fc27e57dabd56724ca24d936dc8a (diff) | |
| download | linux-stable-1e0b7cb062f227439a1d8e7921e85c8df52adc41.tar.gz linux-stable-1e0b7cb062f227439a1d8e7921e85c8df52adc41.tar.bz2 linux-stable-1e0b7cb062f227439a1d8e7921e85c8df52adc41.zip | |
quota: Move locking into clear_dquot_dirty()
Move locking of dq_list_lock into clear_dquot_dirty(). It makes the
function more self-contained and will simplify our life later.
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota')
| -rw-r--r-- | fs/quota/dquot.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 0393581fe1a3..93adcdd6a260 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -381,12 +381,15 @@ static inline void dqput_all(struct dquot **dquot) dqput(dquot[cnt]); } -/* This function needs dq_list_lock */ static inline int clear_dquot_dirty(struct dquot *dquot) { - if (!test_and_clear_bit(DQ_MOD_B, &dquot->dq_flags)) + spin_lock(&dq_list_lock); + if (!test_and_clear_bit(DQ_MOD_B, &dquot->dq_flags)) { + spin_unlock(&dq_list_lock); return 0; + } list_del_init(&dquot->dq_dirty); + spin_unlock(&dq_list_lock); return 1; } @@ -451,12 +454,8 @@ int dquot_commit(struct dquot *dquot) struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); mutex_lock(&dquot->dq_lock); - spin_lock(&dq_list_lock); - if (!clear_dquot_dirty(dquot)) { - spin_unlock(&dq_list_lock); + if (!clear_dquot_dirty(dquot)) goto out_lock; - } - spin_unlock(&dq_list_lock); /* Inactive dquot can be only if there was error during read/init * => we have better not writing it */ if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) @@ -772,9 +771,7 @@ we_slept: * We clear dirty bit anyway, so that we avoid * infinite loop here */ - spin_lock(&dq_list_lock); clear_dquot_dirty(dquot); - spin_unlock(&dq_list_lock); } goto we_slept; } |