linux-ext4 - [PATCH] ext4: uninline ext4_inode_journal

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Date:   Wed,  5 Sep 2018 12:04:52 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     linux-ext4@...r.kernel.org, Theodore Ts'o <tytso@....edu>
Subject: [PATCH] ext4: uninline ext4_inode_journal_mode()

From: Eric Biggers <ebiggers@...gle.com>

Determining an inode's journaling mode has gotten more complicated over
time.  Move ext4_inode_journal_mode() from an inline function into
ext4_jbd2.c to reduce the compiled code size.

Signed-off-by: Eric Biggers <ebiggers@...gle.com>
---
 fs/ext4/ext4_jbd2.c | 21 +++++++++++++++++++++
 fs/ext4/ext4_jbd2.h | 21 +--------------------
 2 files changed, 22 insertions(+), 20 deletions(-)

diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index 7c70b08d104c0..c2e919e748a39 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -7,6 +7,27 @@
 
 #include <trace/events/ext4.h>
 
+int ext4_inode_journal_mode(struct inode *inode)
+{
+	if (EXT4_JOURNAL(inode) == NULL)
+		return EXT4_INODE_WRITEBACK_DATA_MODE;	/* writeback */
+	/* We do not support data journalling with delayed allocation */
+	if (!S_ISREG(inode->i_mode) ||
+	    test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA ||
+	    (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA) &&
+	     !test_opt(inode->i_sb, DELALLOC))) {
+		/* We do not support data journalling for encrypted data */
+		if (S_ISREG(inode->i_mode) && ext4_encrypted_inode(inode))
+			return EXT4_INODE_ORDERED_DATA_MODE;  /* ordered */
+		return EXT4_INODE_JOURNAL_DATA_MODE;	/* journal data */
+	}
+	if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
+		return EXT4_INODE_ORDERED_DATA_MODE;	/* ordered */
+	if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
+		return EXT4_INODE_WRITEBACK_DATA_MODE;	/* writeback */
+	BUG();
+}
+
 /* Just increment the non-pointer handle value */
 static handle_t *ext4_get_nojournal(void)
 {
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index 15b6dd7337805..bed3e22d57192 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -401,26 +401,7 @@ int ext4_force_commit(struct super_block *sb);
 #define EXT4_INODE_ORDERED_DATA_MODE	0x02 /* ordered data mode */
 #define EXT4_INODE_WRITEBACK_DATA_MODE	0x04 /* writeback data mode */
 
-static inline int ext4_inode_journal_mode(struct inode *inode)
-{
-	if (EXT4_JOURNAL(inode) == NULL)
-		return EXT4_INODE_WRITEBACK_DATA_MODE;	/* writeback */
-	/* We do not support data journalling with delayed allocation */
-	if (!S_ISREG(inode->i_mode) ||
-	    test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA ||
-	    (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA) &&
-	    !test_opt(inode->i_sb, DELALLOC))) {
-		/* We do not support data journalling for encrypted data */
-		if (S_ISREG(inode->i_mode) && ext4_encrypted_inode(inode))
-			return EXT4_INODE_ORDERED_DATA_MODE;  /* ordered */
-		return EXT4_INODE_JOURNAL_DATA_MODE;	/* journal data */
-	}
-	if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
-		return EXT4_INODE_ORDERED_DATA_MODE;	/* ordered */
-	if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
-		return EXT4_INODE_WRITEBACK_DATA_MODE;	/* writeback */
-	BUG();
-}
+int ext4_inode_journal_mode(struct inode *inode);
 
 static inline int ext4_should_journal_data(struct inode *inode)
 {
-- 
2.19.0.rc2.392.g5ba43deb5a-goog