posix: Convert several posix_private members to gf_atomic

Change-Id: I629698d8ddf6f15428880bdc1501d36bc37b8ebb
fixes: bz#1657607
Signed-off-by: Mohit Agrawal <moagrawal@redhat.com>

5 files changed, 18 insertions, 48 deletions

diff --git a/xlators/storage/posix/src/posix-aio.c b/xlators/storage/posix/src/posix-aio.c
index 7ab38edf1b7..971ace94754 100644
--- a/xlators/storage/posix/src/posix-aio.c
+++ b/xlators/storage/posix/src/posix-aio.c
@@ -133,11 +133,7 @@ posix_aio_readv_complete(struct posix_aio_cb *paiocb, int res, int res2)
     if (!postbuf.ia_size || (offset + iov.iov_len) >= postbuf.ia_size)
         op_errno = ENOENT;
 
-    LOCK(&priv->lock);
-    {
-        priv->read_value += op_ret;
-    }
-    UNLOCK(&priv->lock);
+    GF_ATOMIC_ADD(priv->read_value, op_ret);
 
 out:
     STACK_UNWIND_STRICT(readv, frame, op_ret, op_errno, &iov, 1, &postbuf,
@@ -301,11 +297,7 @@ posix_aio_writev_complete(struct posix_aio_cb *paiocb, int res, int res2)
     op_ret = res;
     op_errno = 0;
 
-    LOCK(&priv->lock);
-    {
-        priv->write_value += op_ret;
-    }
-    UNLOCK(&priv->lock);
+    GF_ATOMIC_ADD(priv->write_value, op_ret);
 
 out:
     STACK_UNWIND_STRICT(writev, frame, op_ret, op_errno, &prebuf, &postbuf,
diff --git a/xlators/storage/posix/src/posix-common.c b/xlators/storage/posix/src/posix-common.c
index af80f28214b..961b6e871eb 100644
--- a/xlators/storage/posix/src/posix-common.c
+++ b/xlators/storage/posix/src/posix-common.c
@@ -125,9 +125,10 @@ posix_priv(xlator_t *this)
 
     gf_proc_dump_write("base_path", "%s", priv->base_path);
     gf_proc_dump_write("base_path_length", "%d", priv->base_path_length);
-    gf_proc_dump_write("max_read", "%" PRId64, priv->read_value);
-    gf_proc_dump_write("max_write", "%" PRId64, priv->write_value);
-    gf_proc_dump_write("nr_files", "%" PRId64, priv->nr_files);
+    gf_proc_dump_write("max_read", "%" PRId64, GF_ATOMIC_GET(priv->read_value));
+    gf_proc_dump_write("max_write", "%" PRId64,
+                       GF_ATOMIC_GET(priv->write_value));
+    gf_proc_dump_write("nr_files", "%ld", GF_ATOMIC_GET(priv->nr_files));
 
     return 0;
 }
@@ -775,6 +776,9 @@ posix_init(xlator_t *this)
     }
 
     LOCK_INIT(&_private->lock);
+    GF_ATOMIC_INIT(_private->nr_files, 0);
+    GF_ATOMIC_INIT(_private->read_value, 0);
+    GF_ATOMIC_INIT(_private->write_value, 0);
 
     _private->export_statfs = 1;
     tmp_data = dict_get(this->options, "export-statfs-size");
diff --git a/xlators/storage/posix/src/posix-entry-ops.c b/xlators/storage/posix/src/posix-entry-ops.c
index 4d705586741..fbd83c4aed1 100644
--- a/xlators/storage/posix/src/posix-entry-ops.c
+++ b/xlators/storage/posix/src/posix-entry-ops.c
@@ -2210,11 +2210,7 @@ fill_stat:
         gf_msg(this->name, GF_LOG_WARNING, 0, P_MSG_FD_PATH_SETTING_FAILED,
                "failed to set the fd context path=%s fd=%p", real_path, fd);
 
-    LOCK(&priv->lock);
-    {
-        priv->nr_files++;
-    }
-    UNLOCK(&priv->lock);
+    GF_ATOMIC_INC(priv->nr_files);
 
     op_ret = 0;
 
diff --git a/xlators/storage/posix/src/posix-inode-fd-ops.c b/xlators/storage/posix/src/posix-inode-fd-ops.c
index 9867d5fac69..0aabff2615b 100644
--- a/xlators/storage/posix/src/posix-inode-fd-ops.c
+++ b/xlators/storage/posix/src/posix-inode-fd-ops.c
@@ -1476,12 +1476,7 @@ posix_open(call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
         gf_msg(this->name, GF_LOG_WARNING, 0, P_MSG_FD_PATH_SETTING_FAILED,
                "failed to set the fd context path=%s fd=%p", real_path, fd);
 
-    LOCK(&priv->lock);
-    {
-        priv->nr_files++;
-    }
-    UNLOCK(&priv->lock);
-
+    GF_ATOMIC_INC(priv->nr_files);
     op_ret = 0;
 
 out:
@@ -1590,11 +1585,7 @@ posix_readv(call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
         goto out;
     }
 
-    LOCK(&priv->lock);
-    {
-        priv->read_value += op_ret;
-    }
-    UNLOCK(&priv->lock);
+    GF_ATOMIC_ADD(priv->read_value, op_ret);
 
     vec.iov_base = iobuf->ptr;
     vec.iov_len = op_ret;
@@ -1940,11 +1931,7 @@ posix_writev(call_frame_t *frame, xlator_t *this, fd_t *fd,
         }
     }
 
-    LOCK(&priv->lock);
-    {
-        priv->write_value += op_ret;
-    }
-    UNLOCK(&priv->lock);
+    GF_ATOMIC_ADD(priv->write_value, op_ret);
 
 out:
 
@@ -2208,11 +2195,7 @@ posix_copy_file_range(call_frame_t *frame, xlator_t *this, fd_t *fd_in,
      * this comment (or add comment to explain why it is not
      * needed).
      */
-    LOCK(&priv->lock);
-    {
-        priv->write_value += op_ret;
-    }
-    UNLOCK(&priv->lock);
+    GF_ATOMIC_ADD(priv->write_value, op_ret);
 
 out:
 
@@ -2371,12 +2354,7 @@ posix_release(xlator_t *this, fd_t *fd)
     if (!priv)
         goto out;
 
-    LOCK(&priv->lock);
-    {
-        priv->nr_files--;
-    }
-    UNLOCK(&priv->lock);
-
+    GF_ATOMIC_DEC(priv->nr_files);
 out:
     return 0;
 }
diff --git a/xlators/storage/posix/src/posix.h b/xlators/storage/posix/src/posix.h
index 5a3fd29cc09..d5ba08ca593 100644
--- a/xlators/storage/posix/src/posix.h
+++ b/xlators/storage/posix/src/posix.h
@@ -152,9 +152,9 @@ struct posix_private {
     time_t last_landfill_check;
     int32_t janitor_sleep_duration;
 
-    int64_t read_value;  /* Total read, from init */
-    int64_t write_value; /* Total write, from init */
-    int64_t nr_files;
+    gf_atomic_t read_value;  /* Total read, from init */
+    gf_atomic_t write_value; /* Total write, from init */
+    gf_atomic_t nr_files;
     /*
        In some cases, two exported volumes may reside on the same
        partition on the server. Sending statvfs info for both