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ubifs: vmalloc(array_size()) -> vmalloc_array() 

Remove array_size() calls and replace vmalloc() with vmalloc_array() in
ubifs_create_dflt_lpt()/lpt_init_rd()/lpt_init_wr(). vmalloc_array() is
optimized better, resulting in less instructions being used [1].

[1]: https://lore.kernel.org/lkml/abc66ec5-85a4-47e1-9759-2f60ab111971@vivo.com/

Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
pull/1354/merge
Qianfeng Rong 2025-08-17 16:12:38 +08:00 committed by Richard Weinberger
parent d133e30aab
commit 0695aef23d
1 changed files with 6 additions and 6 deletions
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12
fs/ubifs/lpt.c
View File

@ -628,8 +628,8 @@ int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first,
pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_KERNEL);
nnode = kzalloc(sizeof(struct ubifs_nnode), GFP_KERNEL);
buf = vmalloc(c->leb_size);
ltab = vmalloc(array_size(sizeof(struct ubifs_lpt_lprops),
c->lpt_lebs));
ltab = vmalloc_array(c->lpt_lebs,
sizeof(struct ubifs_lpt_lprops));
if (!pnode || !nnode || !buf || !ltab || !lsave) {
err = -ENOMEM;
goto out;
@ -1777,8 +1777,8 @@ static int lpt_init_rd(struct ubifs_info *c)
{
int err, i;
c->ltab = vmalloc(array_size(sizeof(struct ubifs_lpt_lprops),
c->lpt_lebs));
c->ltab = vmalloc_array(c->lpt_lebs,
sizeof(struct ubifs_lpt_lprops));
if (!c->ltab)
return -ENOMEM;
@ -1846,8 +1846,8 @@ static int lpt_init_wr(struct ubifs_info *c)
{
int err, i;
c->ltab_cmt = vmalloc(array_size(sizeof(struct ubifs_lpt_lprops),
c->lpt_lebs));
c->ltab_cmt = vmalloc_array(c->lpt_lebs,
sizeof(struct ubifs_lpt_lprops));
if (!c->ltab_cmt)
return -ENOMEM;