From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx> The following functions test whether their argument is NULL and then return immediately. * kfree * ll_file_data_put * ptlrpc_connection_put Thus the test around such calls is not needed. This issue was detected by using the Coccinelle software. See also a previous update suggestion: "remove unneeded null test before free" by Julia Lawall https://lkml.org/lkml/2015/5/1/498 https://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg878600.html Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx> --- drivers/staging/lustre/lustre/llite/file.c | 3 +-- drivers/staging/lustre/lustre/llite/llite_lib.c | 2 +- drivers/staging/lustre/lustre/ptlrpc/import.c | 6 ++---- drivers/staging/lustre/lustre/ptlrpc/service.c | 4 +--- 4 files changed, 5 insertions(+), 10 deletions(-) diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c index 3075db2..1a85c41 100644 --- a/drivers/staging/lustre/lustre/llite/file.c +++ b/drivers/staging/lustre/lustre/llite/file.c @@ -702,8 +702,7 @@ out_och_free: out_openerr: if (opendir_set != 0) ll_stop_statahead(inode, lli->lli_opendir_key); - if (fd != NULL) - ll_file_data_put(fd); + ll_file_data_put(fd); } else { ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_OPEN, 1); } diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c index 2513988..ab4839c 100644 --- a/drivers/staging/lustre/lustre/llite/llite_lib.c +++ b/drivers/staging/lustre/lustre/llite/llite_lib.c @@ -1114,7 +1114,7 @@ void ll_clear_inode(struct inode *inode) if (lli->lli_mds_read_och) ll_md_real_close(inode, FMODE_READ); - if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) { + if (S_ISLNK(inode->i_mode)) { kfree(lli->lli_symlink_name); lli->lli_symlink_name = NULL; } diff --git a/drivers/staging/lustre/lustre/ptlrpc/import.c b/drivers/staging/lustre/lustre/ptlrpc/import.c index c9b8481..1eae389 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/import.c +++ b/drivers/staging/lustre/lustre/ptlrpc/import.c @@ -555,14 +555,12 @@ static int import_select_connection(struct obd_import *imp) imp_conn->oic_last_attempt = cfs_time_current_64(); /* switch connection, don't mind if it's same as the current one */ - if (imp->imp_connection) - ptlrpc_connection_put(imp->imp_connection); + ptlrpc_connection_put(imp->imp_connection); imp->imp_connection = ptlrpc_connection_addref(imp_conn->oic_conn); dlmexp = class_conn2export(&imp->imp_dlm_handle); LASSERT(dlmexp != NULL); - if (dlmexp->exp_connection) - ptlrpc_connection_put(dlmexp->exp_connection); + ptlrpc_connection_put(dlmexp->exp_connection); dlmexp->exp_connection = ptlrpc_connection_addref(imp_conn->oic_conn); class_export_put(dlmexp); diff --git a/drivers/staging/lustre/lustre/ptlrpc/service.c b/drivers/staging/lustre/lustre/ptlrpc/service.c index 9117f1c..b9ae0b7 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/service.c +++ b/drivers/staging/lustre/lustre/ptlrpc/service.c @@ -2826,9 +2826,7 @@ void ptlrpc_hr_fini(void) ptlrpc_stop_hr_threads(); cfs_percpt_for_each(hrp, i, ptlrpc_hr.hr_partitions) { - if (hrp->hrp_thrs != NULL) { - kfree(hrp->hrp_thrs); - } + kfree(hrp->hrp_thrs); } cfs_percpt_free(ptlrpc_hr.hr_partitions); -- 2.4.4 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
