[PATCH 07/12] staging: lustre: mdc: Use !x to check for kzalloc failure

Julia Lawall
2015-06-20T16:59:05Z

!x is more normal for kzalloc failure in the kernel.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x;
statement S1, S2;
@@

x = kzalloc(...);
if (
- x = NULL
+ !x
) S1 else S2
// </smpl>

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

---
drivers/staging/lustre/lustre/mdc/mdc_request.c | 6 +++---
1 file changed, 3 insertions(+), 3 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
@@ -1202,7 +1202,7 @@ static int mdc_ioc_fid2path(struct obd_e
/* Key is KEY_FID2PATH + getinfo_fid2path description */
keylen = cfs_size_round(sizeof(KEY_FID2PATH)) + sizeof(*gf);
key = kzalloc(keylen, GFP_NOFS);
- if (key = NULL)
+ if (!key)
return -ENOMEM;
memcpy(key, KEY_FID2PATH, sizeof(KEY_FID2PATH));
memcpy(key + cfs_size_round(sizeof(KEY_FID2PATH)), gf, sizeof(*gf));
@@ -1605,7 +1605,7 @@ static int mdc_changelog_send_thread(voi
cs->cs_fp, cs->cs_startrec);

cs->cs_buf = kzalloc(KUC_CHANGELOG_MSG_MAXSIZE, GFP_NOFS);
- if (cs->cs_buf = NULL) {
+ if (!cs->cs_buf) {
rc = -ENOMEM;
goto out;
}
@@ -1934,7 +1934,7 @@ static int mdc_iocontrol(unsigned int cm
struct obd_quotactl *oqctl;

oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS);
- if (oqctl = NULL) {
+ if (!oqctl) {
rc = -ENOMEM;
goto out;
}