[PATCH 6/11] staging: lustre: mdc: Use kzalloc and kfree

Julia Lawall
2015-05-01T15:51:17Z

From: Julia Lawall <Julia.Lawall@lip6.fr>

Replace OBD_ALLOC, OBD_ALLOC_WAIT, OBD_ALLOC_PTR, and OBD_ALLOC_PTR_WAIT by
kalloc/kcalloc, and OBD_FREE and OBD_FREE_PTR by kfree.

A simplified version of the semantic patch that makes these changes is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@ expression ptr,size; @@
- OBD_ALLOC(ptr,size)
+ ptr = kzalloc(size, GFP_NOFS)

@@ expression ptr, size; @@
- OBD_FREE(ptr, size);
+ kfree(ptr);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
drivers/staging/lustre/lustre/mdc/lproc_mdc.c | 4 +--
drivers/staging/lustre/lustre/mdc/mdc_locks.c | 2 -
drivers/staging/lustre/lustre/mdc/mdc_request.c | 30 ++++++++++++------------
3 files changed, 18 insertions(+), 18 deletions(-)

diff -u -p a/drivers/staging/lustre/lustre/mdc/mdc_request.c b/drivers/staging/lustre/lustre/mdc/mdc_request.c
--- a/drivers/staging/lustre/lustre/mdc/mdc_request.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_request.c
@@ -1201,7 +1201,7 @@ static int mdc_ioc_fid2path(struct obd_e

/* Key is KEY_FID2PATH + getinfo_fid2path description */
keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
- OBD_ALLOC(key, keylen);
+ key = kzalloc(keylen, GFP_NOFS);
if (key = NULL)
return -ENOMEM;
memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
@@ -1234,7 +1234,7 @@ static int mdc_ioc_fid2path(struct obd_e
PFID(&gf->gf_fid), gf->gf_recno, gf->gf_linkno, gf->gf_path);

out:
- OBD_FREE(key, keylen);
+ kfree(key);
return rc;
}

@@ -1604,7 +1604,7 @@ static int mdc_changelog_send_thread(voi
CDEBUG(D_CHANGELOG, "changelog to fp=%p start %llu\n",
cs->cs_fp, cs->cs_startrec);

- OBD_ALLOC(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
+ cs->cs_buf = kzalloc(KUC_CHANGELOG_MSG_MAXSIZE, GFP_NOFS);
if (cs->cs_buf = NULL) {
rc = -ENOMEM;
goto out;
@@ -1645,8 +1645,8 @@ out:
if (ctxt)
llog_ctxt_put(ctxt);
if (cs->cs_buf)
- OBD_FREE(cs->cs_buf, KUC_CHANGELOG_MSG_MAXSIZE);
- OBD_FREE_PTR(cs);
+ kfree(cs->cs_buf);
+ kfree(cs);
return rc;
}

@@ -1657,7 +1657,7 @@ static int mdc_ioc_changelog_send(struct
int rc;

/* Freed in mdc_changelog_send_thread */
- OBD_ALLOC_PTR(cs);
+ cs = kzalloc(sizeof(*cs), GFP_NOFS);
if (!cs)
return -ENOMEM;

@@ -1679,7 +1679,7 @@ static int mdc_ioc_changelog_send(struct
}

CERROR("Failed to start changelog thread: %d\n", rc);
- OBD_FREE_PTR(cs);
+ kfree(cs);
return rc;
}

@@ -1937,7 +1937,7 @@ static int mdc_iocontrol(unsigned int cm
struct if_quotactl *qctl = karg;
struct obd_quotactl *oqctl;

- OBD_ALLOC_PTR(oqctl);
+ oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS);
if (oqctl = NULL) {
rc = -ENOMEM;
goto out;
@@ -1951,7 +1951,7 @@ static int mdc_iocontrol(unsigned int cm
qctl->obd_uuid = obd->u.cli.cl_target_uuid;
}

- OBD_FREE_PTR(oqctl);
+ kfree(oqctl);
goto out;
}
case LL_IOC_GET_CONNECT_FLAGS:
@@ -2430,14 +2430,14 @@ static int mdc_setup(struct obd_device *
struct lprocfs_static_vars lvars = { NULL };
int rc;

- OBD_ALLOC(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock));
+ cli->cl_rpc_lock = kzalloc(sizeof(*cli->cl_rpc_lock), GFP_NOFS);
if (!cli->cl_rpc_lock)
return -ENOMEM;
mdc_init_rpc_lock(cli->cl_rpc_lock);

ptlrpcd_addref();

- OBD_ALLOC(cli->cl_close_lock, sizeof(*cli->cl_close_lock));
+ cli->cl_close_lock = kzalloc(sizeof(*cli->cl_close_lock), GFP_NOFS);
if (!cli->cl_close_lock) {
rc = -ENOMEM;
goto err_rpc_lock;
@@ -2465,9 +2465,9 @@ static int mdc_setup(struct obd_device *
return rc;

err_close_lock:
- OBD_FREE(cli->cl_close_lock, sizeof(*cli->cl_close_lock));
+ kfree(cli->cl_close_lock);
err_rpc_lock:
- OBD_FREE(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock));
+ kfree(cli->cl_rpc_lock);
ptlrpcd_decref();
return rc;
}
@@ -2525,8 +2525,8 @@ static int mdc_cleanup(struct obd_device
{
struct client_obd *cli = &obd->u.cli;

- OBD_FREE(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock));
- OBD_FREE(cli->cl_close_lock, sizeof(*cli->cl_close_lock));
+ kfree(cli->cl_rpc_lock);
+ kfree(cli->cl_close_lock);

ptlrpcd_decref();

diff -u -p a/drivers/staging/lustre/lustre/mdc/mdc_locks.c b/drivers/staging/lustre/lustre/mdc/mdc_locks.c
--- a/drivers/staging/lustre/lustre/mdc/mdc_locks.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_locks.c
@@ -1251,7 +1251,7 @@ static int mdc_intent_getattr_async_inte
rc = mdc_finish_intent_lock(exp, req, &minfo->mi_data, it, lockh);

out:
- OBD_FREE_PTR(einfo);
+ kfree(einfo);
minfo->mi_cb(req, minfo, rc);
return 0;
}
diff -u -p a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
--- a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
+++ b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
@@ -106,7 +106,7 @@ static ssize_t mdc_kuc_write(struct file
len = sizeof(*lh) + sizeof(*hal) + MTI_NAME_MAXLEN +
/* for mockup below */ 2 * cfs_size_round(sizeof(*hai));

- OBD_ALLOC(lh, len);
+ lh = kzalloc(len, GFP_NOFS);
if (!lh)
return -ENOMEM;

@@ -141,7 +141,7 @@ static ssize_t mdc_kuc_write(struct file
rc = libcfs_kkuc_msg_put(fp, lh);
fput(fp);
}
- OBD_FREE(lh, len);
+ kfree(lh);
if (rc < 0)
return rc;
return count;