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ext4: remove redundant condition check

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ext4_xattr_destroy_cache() can handle NULL pointer correctly,
so there is no need to check NULL pointer before calling
ext4_xattr_destroy_cache().

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Chengguang Xu 2018-12-04 00:24:42 -05:00 committed by Theodore Ts'o
parent 561405f031
commit 50c15df69e
1 changed files with 13 additions and 16 deletions
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29
fs/ext4/super.c
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@ -1023,14 +1023,13 @@ static void ext4_put_super(struct super_block *sb)
invalidate_bdev(sbi->journal_bdev);
ext4_blkdev_remove(sbi);
}
if (sbi->s_ea_inode_cache) {
ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
sbi->s_ea_inode_cache = NULL;
}
if (sbi->s_ea_block_cache) {
ext4_xattr_destroy_cache(sbi->s_ea_block_cache);
sbi->s_ea_block_cache = NULL;
}
ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
sbi->s_ea_inode_cache = NULL;
ext4_xattr_destroy_cache(sbi->s_ea_block_cache);
sbi->s_ea_block_cache = NULL;
if (sbi->s_mmp_tsk)
kthread_stop(sbi->s_mmp_tsk);
brelse(sbi->s_sbh);
@ -4545,14 +4544,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (EXT4_SB(sb)->rsv_conversion_wq)
destroy_workqueue(EXT4_SB(sb)->rsv_conversion_wq);
failed_mount_wq:
if (sbi->s_ea_inode_cache) {
ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
sbi->s_ea_inode_cache = NULL;
}
if (sbi->s_ea_block_cache) {
ext4_xattr_destroy_cache(sbi->s_ea_block_cache);
sbi->s_ea_block_cache = NULL;
}
ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
sbi->s_ea_inode_cache = NULL;
ext4_xattr_destroy_cache(sbi->s_ea_block_cache);
sbi->s_ea_block_cache = NULL;
if (sbi->s_journal) {
jbd2_journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;