linux-kernel - [PATCH] f2fs-toos: use getpagesize() to get default blocksize in Android

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Message-ID: <1726283507-16611-1-git-send-email-zhiguo.niu@unisoc.com>
Date: Sat, 14 Sep 2024 11:11:47 +0800
From: Zhiguo Niu <zhiguo.niu@...soc.com>
To: <jaegeuk@...nel.org>, <chao@...nel.org>
CC: <linux-f2fs-devel@...ts.sourceforge.net>, <linux-kernel@...r.kernel.org>,
        <niuzhiguo84@...il.com>, <zhiguo.niu@...soc.com>, <ke.wang@...soc.com>,
        <Hao_hao.Wang@...soc.com>, <xiuhong.wang@...soc.com>
Subject: [PATCH] f2fs-toos: use getpagesize() to get default blocksize in Android

When 16K page/block size is enabled in Android platform,
a error maybe detected in mount process in kernel if "-b"
parameters is not specified in mkfs.f2fs.
Just as the following check:
if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS)

So use getpagesize() to get correct default blocksize.

Signed-off-by: Zhiguo Niu <zhiguo.niu@...soc.com>
Signed-off-by: Xiuhong Wang <xiuhong.wang@...soc.com>
---
 lib/libf2fs.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/libf2fs.c b/lib/libf2fs.c
index ecd22d4..98ee0ae 100644
--- a/lib/libf2fs.c
+++ b/lib/libf2fs.c
@@ -685,8 +685,17 @@ void f2fs_init_configuration(void)
 
 	memset(&c, 0, sizeof(struct f2fs_configuration));
 	c.ndevs = 1;
+#ifdef WITH_ANDROID
+	c.blksize = getpagesize();
+	c.blksize_bits = log_base_2(c.blksize);
+	if ((1 << c.blksize_bits) != c.blksize) {
+		c.blksize = 1 << DEFAULT_BLKSIZE_BITS;
+		c.blksize_bits = DEFAULT_BLKSIZE_BITS;
+	}
+#else
 	c.blksize = 1 << DEFAULT_BLKSIZE_BITS;
 	c.blksize_bits = DEFAULT_BLKSIZE_BITS;
+#endif
 	c.sectors_per_blk = DEFAULT_SECTORS_PER_BLOCK;
 	c.blks_per_seg = DEFAULT_BLOCKS_PER_SEGMENT;
 	c.wanted_total_sectors = -1;
-- 
1.9.1