netfs: Count DIO writes

Provide a counter for DIO writes to match that for DIO reads.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org

diff --git a/fs/netfs/direct_write.c b/fs/netfs/direct_write.c
index b9cbfd6a8a01daddacea7086ca000a68a84f3458..60a40d293c87f5fd1088830f07488775b8725bb4 100644 (file)
--- a/fs/netfs/direct_write.c
+++ b/fs/netfs/direct_write.c
@@ -140,6 +140,7 @@ ssize_t netfs_unbuffered_write_iter(struct kiocb *iocb, struct iov_iter *from)
        _enter("%llx,%zx,%llx", iocb->ki_pos, iov_iter_count(from), i_size_read(inode));
 
        trace_netfs_write_iter(iocb, from);
+       netfs_stat(&netfs_n_rh_dio_write);
 
        ret = netfs_start_io_direct(inode);
        if (ret < 0)

diff --git a/fs/netfs/internal.h b/fs/netfs/internal.h
index a6dfc88883779f11a25e50b86712780c57c1ff2a..3f9620d0fa63d1715867656e0c3e230c7ba565cf 100644 (file)
--- a/fs/netfs/internal.h
+++ b/fs/netfs/internal.h
@@ -104,6 +104,7 @@ int netfs_end_writethrough(struct netfs_io_request *wreq, struct kiocb *iocb);
  */
 #ifdef CONFIG_NETFS_STATS
 extern atomic_t netfs_n_rh_dio_read;
+extern atomic_t netfs_n_rh_dio_write;
 extern atomic_t netfs_n_rh_readahead;
 extern atomic_t netfs_n_rh_readpage;
 extern atomic_t netfs_n_rh_rreq;

diff --git a/fs/netfs/stats.c b/fs/netfs/stats.c
index 15fd5c3f0f392bd9253e091a32bd851f16f3aef6..42db36528d921381614905395ca5de543f443b8f 100644 (file)
--- a/fs/netfs/stats.c
+++ b/fs/netfs/stats.c
@@ -10,6 +10,7 @@
 #include "internal.h"
 
 atomic_t netfs_n_rh_dio_read;
+atomic_t netfs_n_rh_dio_write;
 atomic_t netfs_n_rh_readahead;
 atomic_t netfs_n_rh_readpage;
 atomic_t netfs_n_rh_rreq;
@@ -37,14 +38,13 @@ atomic_t netfs_n_wh_write_failed;
 
 int netfs_stats_show(struct seq_file *m, void *v)
 {
-       seq_printf(m, "Netfs  : DR=%u RA=%u RP=%u WB=%u WBZ=%u rr=%u sr=%u\n",
+       seq_printf(m, "Netfs  : DR=%u DW=%u RA=%u RP=%u WB=%u WBZ=%u\n",
                   atomic_read(&netfs_n_rh_dio_read),
+                  atomic_read(&netfs_n_rh_dio_write),
                   atomic_read(&netfs_n_rh_readahead),
                   atomic_read(&netfs_n_rh_readpage),
                   atomic_read(&netfs_n_rh_write_begin),
-                  atomic_read(&netfs_n_rh_write_zskip),
-                  atomic_read(&netfs_n_rh_rreq),
-                  atomic_read(&netfs_n_rh_sreq));
+                  atomic_read(&netfs_n_rh_write_zskip));
        seq_printf(m, "Netfs  : ZR=%u sh=%u sk=%u\n",
                   atomic_read(&netfs_n_rh_zero),
                   atomic_read(&netfs_n_rh_short_read),
@@ -66,6 +66,9 @@ int netfs_stats_show(struct seq_file *m, void *v)
                   atomic_read(&netfs_n_wh_write),
                   atomic_read(&netfs_n_wh_write_done),
                   atomic_read(&netfs_n_wh_write_failed));
+       seq_printf(m, "Netfs  : rr=%u sr=%u\n",
+                  atomic_read(&netfs_n_rh_rreq),
+                  atomic_read(&netfs_n_rh_sreq));
        return fscache_stats_show(m);
 }
 EXPORT_SYMBOL(netfs_stats_show);