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OpenCloudOS-Kernel
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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: deleted inconsistent comment in nilfs_load_inode_block()
  nilfs2: deleted struct nilfs_dat_group_desc
  nilfs2: fix lock order reversal in chcp operation
This commit is contained in:
Linus Torvalds 2009-11-17 09:15:18 -08:00
parent cb20c28a9c 18dafac1a4
commit 82abc2a97a
4 changed files with 5 additions and 13 deletions
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2
fs/nilfs2/cpfile.c
View File

@ -871,7 +871,6 @@ int nilfs_cpfile_change_cpmode(struct inode *cpfile, __u64 cno, int mode)
* exclusive with a new mount job. Though it doesn't cover
* umount, it's enough for the purpose.
*/
mutex_lock(&nilfs->ns_mount_mutex);
if (nilfs_checkpoint_is_mounted(nilfs, cno, 1)) {
/* Current implementation does not have to protect
plain read-only mounts since they are exclusive
@ -880,7 +879,6 @@ int nilfs_cpfile_change_cpmode(struct inode *cpfile, __u64 cno, int mode)
ret = -EBUSY;
} else
ret = nilfs_cpfile_clear_snapshot(cpfile, cno);
mutex_unlock(&nilfs->ns_mount_mutex);
return ret;
case NILFS_SNAPSHOT:
return nilfs_cpfile_set_snapshot(cpfile, cno);

1
fs/nilfs2/inode.c
View File

@ -664,7 +664,6 @@ int nilfs_load_inode_block(struct nilfs_sb_info *sbi, struct inode *inode,
int err;
spin_lock(&sbi->s_inode_lock);
/* Caller of this function MUST lock s_inode_lock */
if (ii->i_bh == NULL) {
spin_unlock(&sbi->s_inode_lock);
err = nilfs_ifile_get_inode_block(sbi->s_ifile, inode->i_ino,

6
fs/nilfs2/ioctl.c
View File

@ -99,7 +99,8 @@ static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
unsigned int cmd, void __user *argp)
{
struct inode *cpfile = NILFS_SB(inode->i_sb)->s_nilfs->ns_cpfile;
struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
struct inode *cpfile = nilfs->ns_cpfile;
struct nilfs_transaction_info ti;
struct nilfs_cpmode cpmode;
int ret;
@ -109,14 +110,17 @@ static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
if (copy_from_user(&cpmode, argp, sizeof(cpmode)))
return -EFAULT;
mutex_lock(&nilfs->ns_mount_mutex);
nilfs_transaction_begin(inode->i_sb, &ti, 0);
ret = nilfs_cpfile_change_cpmode(
cpfile, cpmode.cm_cno, cpmode.cm_mode);
if (unlikely(ret < 0)) {
nilfs_transaction_abort(inode->i_sb);
mutex_unlock(&nilfs->ns_mount_mutex);
return ret;
}
nilfs_transaction_commit(inode->i_sb); /* never fails */
mutex_unlock(&nilfs->ns_mount_mutex);
return ret;
}

9
include/linux/nilfs2_fs.h
View File

@ -424,15 +424,6 @@ struct nilfs_dat_entry {
__le64 de_rsv;
};
/**
* struct nilfs_dat_group_desc - block group descriptor
* @dg_nfrees: number of free virtual block numbers in block group
*/
struct nilfs_dat_group_desc {
__le32 dg_nfrees;
};
/**
* struct nilfs_snapshot_list - snapshot list
* @ssl_next: next checkpoint number on snapshot list