Commit c07cb01c authored by Marco Stornelli's avatar Marco Stornelli Committed by Al Viro
Browse files

sysv: drop lock/unlock super 



Removed lock/unlock super. Added a new private s_lock mutex.

Signed-off-by: default avatarMarco Stornelli <marco.stornelli@gmail.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent f6e12dc4

fs/sysv/balloc.c

+9 −9
Original line number Diff line number Diff line
@@ -60,12 +60,12 @@ void sysv_free_block(struct super_block * sb, sysv_zone_t nr) 
		return;

	}



	lock_super(sb);

	mutex_lock(&sbi->s_lock);

	count = fs16_to_cpu(sbi, *sbi->s_bcache_count);



	if (count > sbi->s_flc_size) {

		printk("sysv_free_block: flc_count > flc_size\n");

		unlock_super(sb);

		mutex_unlock(&sbi->s_lock);

		return;

	}

	/* If the free list head in super-block is full, it is copied
@@ -77,7 +77,7 @@ void sysv_free_block(struct super_block * sb, sysv_zone_t nr) 
		bh = sb_getblk(sb, block);

		if (!bh) {

			printk("sysv_free_block: getblk() failed\n");

			unlock_super(sb);

			mutex_unlock(&sbi->s_lock);

			return;

		}

		memset(bh->b_data, 0, sb->s_blocksize);
@@ -93,7 +93,7 @@ void sysv_free_block(struct super_block * sb, sysv_zone_t nr) 
	*sbi->s_bcache_count = cpu_to_fs16(sbi, count);

	fs32_add(sbi, sbi->s_free_blocks, 1);

	dirty_sb(sb);

	unlock_super(sb);

	mutex_unlock(&sbi->s_lock);

}



sysv_zone_t sysv_new_block(struct super_block * sb)
@@ -104,7 +104,7 @@ sysv_zone_t sysv_new_block(struct super_block * sb) 
	struct buffer_head * bh;

	unsigned count;



	lock_super(sb);

	mutex_lock(&sbi->s_lock);

	count = fs16_to_cpu(sbi, *sbi->s_bcache_count);



	if (count == 0) /* Applies only to Coherent FS */
@@ -147,11 +147,11 @@ sysv_zone_t sysv_new_block(struct super_block * sb) 
	/* Now the free list head in the superblock is valid again. */

	fs32_add(sbi, sbi->s_free_blocks, -1);

	dirty_sb(sb);

	unlock_super(sb);

	mutex_unlock(&sbi->s_lock);

	return nr;



Enospc:

	unlock_super(sb);

	mutex_unlock(&sbi->s_lock);

	return 0;

}
@@ -173,7 +173,7 @@ unsigned long sysv_count_free_blocks(struct super_block * sb) 
	if (sbi->s_type == FSTYPE_AFS)

		return 0;



	lock_super(sb);

	mutex_lock(&sbi->s_lock);

	sb_count = fs32_to_cpu(sbi, *sbi->s_free_blocks);



	if (0)
@@ -211,7 +211,7 @@ unsigned long sysv_count_free_blocks(struct super_block * sb) 
	if (count != sb_count)

		goto Ecount;

done:

	unlock_super(sb);

	mutex_unlock(&sbi->s_lock);

	return count;



Einval:

fs/sysv/ialloc.c

+7 −7
Original line number Diff line number Diff line
@@ -118,7 +118,7 @@ void sysv_free_inode(struct inode * inode) 
		       "%s\n", inode->i_sb->s_id);

		return;

	}

	lock_super(sb);

	mutex_lock(&sbi->s_lock);

	count = fs16_to_cpu(sbi, *sbi->s_sb_fic_count);

	if (count < sbi->s_fic_size) {

		*sv_sb_fic_inode(sb,count++) = cpu_to_fs16(sbi, ino);
@@ -128,7 +128,7 @@ void sysv_free_inode(struct inode * inode) 
	dirty_sb(sb);

	memset(raw_inode, 0, sizeof(struct sysv_inode));

	mark_buffer_dirty(bh);

	unlock_super(sb);

	mutex_unlock(&sbi->s_lock);

	brelse(bh);

}
@@ -147,13 +147,13 @@ struct inode * sysv_new_inode(const struct inode * dir, umode_t mode) 
	if (!inode)

		return ERR_PTR(-ENOMEM);



	lock_super(sb);

	mutex_lock(&sbi->s_lock);

	count = fs16_to_cpu(sbi, *sbi->s_sb_fic_count);

	if (count == 0 || (*sv_sb_fic_inode(sb,count-1) == 0)) {

		count = refill_free_cache(sb);

		if (count == 0) {

			iput(inode);

			unlock_super(sb);

			mutex_unlock(&sbi->s_lock);

			return ERR_PTR(-ENOSPC);

		}

	}
@@ -174,7 +174,7 @@ struct inode * sysv_new_inode(const struct inode * dir, umode_t mode) 
	sysv_write_inode(inode, &wbc);	/* ensure inode not allocated again */

	mark_inode_dirty(inode);	/* cleared by sysv_write_inode() */

	/* That's it. */

	unlock_super(sb);

	mutex_unlock(&sbi->s_lock);

	return inode;

}
@@ -185,7 +185,7 @@ unsigned long sysv_count_free_inodes(struct super_block * sb) 
	struct sysv_inode * raw_inode;

	int ino, count, sb_count;



	lock_super(sb);

	mutex_lock(&sbi->s_lock);



	sb_count = fs16_to_cpu(sbi, *sbi->s_sb_total_free_inodes);
@@ -213,7 +213,7 @@ unsigned long sysv_count_free_inodes(struct super_block * sb) 
	if (count != sb_count)

		goto Einval;

out:

	unlock_super(sb);

	mutex_unlock(&sbi->s_lock);

	return count;



Einval:

fs/sysv/inode.c

+2 −2
Original line number Diff line number Diff line
@@ -36,7 +36,7 @@ static int sysv_sync_fs(struct super_block *sb, int wait) 
	struct sysv_sb_info *sbi = SYSV_SB(sb);

	unsigned long time = get_seconds(), old_time;



	lock_super(sb);

	mutex_lock(&sbi->s_lock);



	/*

	 * If we are going to write out the super block,
@@ -51,7 +51,7 @@ static int sysv_sync_fs(struct super_block *sb, int wait) 
		mark_buffer_dirty(sbi->s_bh2);

	}



	unlock_super(sb);

	mutex_unlock(&sbi->s_lock);



	return 0;

}

fs/sysv/super.c

+1 −0
Original line number Diff line number Diff line
@@ -368,6 +368,7 @@ static int sysv_fill_super(struct super_block *sb, void *data, int silent) 


	sbi->s_sb = sb;

	sbi->s_block_base = 0;

	mutex_init(&sbi->s_lock);

	sb->s_fs_info = sbi;



	sb_set_blocksize(sb, BLOCK_SIZE);

fs/sysv/sysv.h

+1 −0
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ struct sysv_sb_info { 
	u32            s_nzones;	/* same as s_sbd->s_fsize */

	u16	       s_namelen;       /* max length of dir entry */

	int	       s_forced_ro;

	struct mutex s_lock;

};



/*