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Commit 6c30c53f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix oopses with doubly mounted snapshots
  nilfs2: missing a read lock for segment writer in nilfs_attach_checkpoint()
parents 0dc9aa84 a9245860

fs/nilfs2/super.c

+2 −0
Original line number Diff line number Diff line
@@ -416,8 +416,10 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno) 
	if (unlikely(err))

		goto failed;



	down_read(&nilfs->ns_segctor_sem);

	err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, cno, 0, &raw_cp,

					  &bh_cp);

	up_read(&nilfs->ns_segctor_sem);

	if (unlikely(err)) {

		if (err == -ENOENT || err == -EINVAL) {

			printk(KERN_ERR

fs/nilfs2/the_nilfs.h

+1 −1
Original line number Diff line number Diff line
@@ -253,7 +253,7 @@ nilfs_detach_writer(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) 


static inline void nilfs_put_sbinfo(struct nilfs_sb_info *sbi)

{

	if (!atomic_dec_and_test(&sbi->s_count))

	if (atomic_dec_and_test(&sbi->s_count))

		kfree(sbi);

}