linux-kernel - [PATCH v3 3/3] fs/ntfs3: Use kcalloc/kmalloc

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Date:   Wed, 18 Aug 2021 04:06:49 +0300
From:   Kari Argillander <kari.argillander@...il.com>
To:     Konstantin Komarov <almaz.alexandrovich@...agon-software.com>,
        ntfs3@...ts.linux.dev, Christoph Hellwig <hch@....de>
Cc:     Kari Argillander <kari.argillander@...il.com>,
        linux-kernel@...r.kernel.org, Joe Perches <joe@...ches.com>
Subject: [PATCH v3 3/3] fs/ntfs3: Use kcalloc/kmalloc_array over kzalloc/kmalloc

Use kcalloc/kmalloc_array over kzalloc/kmalloc when we allocate array.
Checkpatch found these after we did not use our own defined allocation
wrappers.

Signed-off-by: Kari Argillander <kari.argillander@...il.com>
---
 fs/ntfs3/bitmap.c  | 2 +-
 fs/ntfs3/file.c    | 2 +-
 fs/ntfs3/frecord.c | 7 +++----
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/fs/ntfs3/bitmap.c b/fs/ntfs3/bitmap.c
index d502bba323d0..2de05062c78b 100644
--- a/fs/ntfs3/bitmap.c
+++ b/fs/ntfs3/bitmap.c
@@ -683,7 +683,7 @@ int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits)
 	if (!wnd->bits_last)
 		wnd->bits_last = wbits;
 
-	wnd->free_bits = kzalloc(wnd->nwnd * sizeof(u16), GFP_NOFS);
+	wnd->free_bits = kcalloc(wnd->nwnd, sizeof(u16), GFP_NOFS);
 	if (!wnd->free_bits)
 		return -ENOMEM;
 
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index 8d27c520bec5..6687f3c67450 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -900,7 +900,7 @@ static ssize_t ntfs_compress_write(struct kiocb *iocb, struct iov_iter *from)
 		return -EOPNOTSUPP;
 	}
 
-	pages = kmalloc(pages_per_frame * sizeof(struct page *), GFP_NOFS);
+	pages = kmalloc_array(pages_per_frame, sizeof(struct page *), GFP_NOFS);
 	if (!pages)
 		return -ENOMEM;
 
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 33c6b40d8ca7..98bca9f9d8d1 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -2050,7 +2050,7 @@ int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page)
 	idx = (vbo - frame_vbo) >> PAGE_SHIFT;
 
 	pages_per_frame = frame_size >> PAGE_SHIFT;
-	pages = kzalloc(pages_per_frame * sizeof(struct page *), GFP_NOFS);
+	pages = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);
 	if (!pages) {
 		err = -ENOMEM;
 		goto out;
@@ -2133,7 +2133,7 @@ int ni_decompress_file(struct ntfs_inode *ni)
 	frame_bits = ni_ext_compress_bits(ni);
 	frame_size = 1u << frame_bits;
 	pages_per_frame = frame_size >> PAGE_SHIFT;
-	pages = kzalloc(pages_per_frame * sizeof(struct page *), GFP_NOFS);
+	pages = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);
 	if (!pages) {
 		err = -ENOMEM;
 		goto out;
@@ -2705,8 +2705,7 @@ int ni_write_frame(struct ntfs_inode *ni, struct page **pages,
 		goto out;
 	}
 
-	pages_disk = kzalloc(pages_per_frame * sizeof(struct page *),
-			     GFP_NOFS);
+	pages_disk = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);
 	if (!pages_disk) {
 		err = -ENOMEM;
 		goto out;
-- 
2.25.1