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| author | Theodore Ts'o <tytso@mit.edu> | 2010-08-02 16:43:25 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2010-08-02 16:43:25 +0400 |
| commit | a51dca9cd3bb4ec5a05bfb6feabf024a5c808a37 (patch) | |
| tree | 31256b4fa3ec1d0e1e27196607499877c662ee86 /include/linux/jbd2.h | |
| parent | 8b67f04ab9de5d8f3a71aef72bf02c995a506db5 (diff) | |
| download | linux-a51dca9cd3bb4ec5a05bfb6feabf024a5c808a37.tar.xz | |
jbd2: Use atomic variables to avoid taking t_handle_lock in jbd2_journal_stop
By using an atomic_t for t_updates and t_outstanding credits, this
should allow us to not need to take transaction t_handle_lock in
jbd2_journal_stop().
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'include/linux/jbd2.h')
| -rw-r--r-- | include/linux/jbd2.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 5a72bc75b273..a72ce21de0e1 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -601,13 +601,13 @@ struct transaction_s * Number of outstanding updates running on this transaction * [t_handle_lock] */ - int t_updates; + atomic_t t_updates; /* * Number of buffers reserved for use by all handles in this transaction * handle but not yet modified. [t_handle_lock] */ - int t_outstanding_credits; + atomic_t t_outstanding_credits; /* * Forward and backward links for the circular list of all transactions @@ -1258,8 +1258,8 @@ static inline int jbd_space_needed(journal_t *journal) { int nblocks = journal->j_max_transaction_buffers; if (journal->j_committing_transaction) - nblocks += journal->j_committing_transaction-> - t_outstanding_credits; + nblocks += atomic_read(&journal->j_committing_transaction-> + t_outstanding_credits); return nblocks; } |