f2fs: fix to avoid call kvfree under spinlock

vfree() don't wish to be called from interrupt context, move it
out of spin_lock_irqsave() coverage.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 17382da7f0bd934bc9de9cc5c96e7d06a151e86e..4fa9a618b31a477fc9fece24cb09a9fadc5c6250 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1640,6 +1640,7 @@ static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
 static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
 {
        unsigned long flags;
+       unsigned char *nat_bits;
 
        /*
         * In order to re-enable nat_bits we need to call fsck.f2fs by
@@ -1650,10 +1651,12 @@ static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
        if (lock)
                spin_lock_irqsave(&sbi->cp_lock, flags);
        __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
-       kvfree(NM_I(sbi)->nat_bits);
+       nat_bits = NM_I(sbi)->nat_bits;
        NM_I(sbi)->nat_bits = NULL;
        if (lock)
                spin_unlock_irqrestore(&sbi->cp_lock, flags);
+
+       kvfree(nat_bits);
 }
 
 static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,