linux-kernel - [PATCH v3 5/9] fs/ntfs3: Init spi more in init_fs_context than fill

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Date:   Sun, 29 Aug 2021 12:56:10 +0300
From:   Kari Argillander <kari.argillander@...il.com>
To:     Konstantin Komarov <almaz.alexandrovich@...agon-software.com>,
        ntfs3@...ts.linux.dev
Cc:     Kari Argillander <kari.argillander@...il.com>,
        Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org,
        Pali Rohár <pali@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Christian Brauner <christian.brauner@...ntu.com>
Subject: [PATCH v3 5/9] fs/ntfs3: Init spi more in init_fs_context than fill_super

init_fs_context() is meant to initialize s_fs_info (spi). Move spi
initializing code there which we can initialize before fill_super().

Signed-off-by: Kari Argillander <kari.argillander@...il.com>
---
 fs/ntfs3/super.c | 41 ++++++++++++++++++++++-------------------
 1 file changed, 22 insertions(+), 19 deletions(-)

diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 99102a146cf5..b2a3f947542b 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -870,7 +870,7 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)
 	const struct VOLUME_INFO *info;
 	u32 idx, done, bytes;
 	struct ATTR_DEF_ENTRY *t;
-	u16 *upcase = NULL;
+	u16 *upcase;
 	u16 *shared;
 	bool is_ro;
 	struct MFT_REF ref;
@@ -885,9 +885,6 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)
 	sb->s_time_gran = NTFS_TIME_GRAN; // 100 nsec
 	sb->s_xattr = ntfs_xattr_handlers;
 
-	ratelimit_state_init(&sbi->msg_ratelimit, DEFAULT_RATELIMIT_INTERVAL,
-			     DEFAULT_RATELIMIT_BURST);
-
 	sbi->options->nls = ntfs_load_nls(sbi->options->nls_name);
 	if (IS_ERR(sbi->options->nls)) {
 		sbi->options->nls = NULL;
@@ -917,12 +914,6 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)
 	sb->s_maxbytes = 0xFFFFFFFFull << sbi->cluster_bits;
 #endif
 
-	mutex_init(&sbi->compress.mtx_lznt);
-#ifdef CONFIG_NTFS3_LZX_XPRESS
-	mutex_init(&sbi->compress.mtx_xpress);
-	mutex_init(&sbi->compress.mtx_lzx);
-#endif
-
 	/*
 	 * Load $Volume. This should be done before LogFile
 	 * 'cause 'sbi->volume.ni' is used 'ntfs_set_state'
@@ -1207,11 +1198,7 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)
 		goto out;
 	}
 
-	sbi->upcase = upcase = kvmalloc(0x10000 * sizeof(short), GFP_KERNEL);
-	if (!upcase) {
-		err = -ENOMEM;
-		goto out;
-	}
+	upcase = sbi->upcase;
 
 	for (idx = 0; idx < (0x10000 * sizeof(short) >> PAGE_SHIFT); idx++) {
 		const __le16 *src;
@@ -1421,10 +1408,21 @@ static int ntfs_init_fs_context(struct fs_context *fc)
 		goto ok;
 
 	sbi = kzalloc(sizeof(struct ntfs_sb_info), GFP_NOFS);
-	if (!sbi) {
-		kfree(opts);
-		return -ENOMEM;
-	}
+	if (!sbi)
+		goto free_opts;
+
+	sbi->upcase = kvmalloc(0x10000 * sizeof(short), GFP_KERNEL);
+	if (!sbi->upcase)
+		goto free_sbi;
+
+	ratelimit_state_init(&sbi->msg_ratelimit, DEFAULT_RATELIMIT_INTERVAL,
+			     DEFAULT_RATELIMIT_BURST);
+
+	mutex_init(&sbi->compress.mtx_lznt);
+#ifdef CONFIG_NTFS3_LZX_XPRESS
+	mutex_init(&sbi->compress.mtx_xpress);
+	mutex_init(&sbi->compress.mtx_lzx);
+#endif
 
 	sbi->options = opts;
 	fc->s_fs_info = sbi;
@@ -1433,6 +1431,11 @@ static int ntfs_init_fs_context(struct fs_context *fc)
 	fc->ops = &ntfs_context_ops;
 
 	return 0;
+free_opts:
+	kfree(opts);
+free_sbi:
+	kfree(sbi);
+	return -ENOMEM;
 }
 
 // clang-format off
-- 
2.25.1