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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

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* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  quota: Pass information that quota is stored in system file to userspace
  ext2: protect inode changes in the SETVERSION and SETFLAGS ioctls
  jbd: Issue cache flush after checkpointing
This commit is contained in:
Linus Torvalds 2012-01-24 12:12:40 -08:00
commit d2346963bf
5 changed files with 52 additions and 15 deletions
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22
fs/ext2/ioctl.c
View File

@ -77,10 +77,11 @@ long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
flags = flags & EXT2_FL_USER_MODIFIABLE;
flags |= oldflags & ~EXT2_FL_USER_MODIFIABLE;
ei->i_flags = flags;
mutex_unlock(&inode->i_mutex);
ext2_set_inode_flags(inode);
inode->i_ctime = CURRENT_TIME_SEC;
mutex_unlock(&inode->i_mutex);
mark_inode_dirty(inode);
setflags_out:
mnt_drop_write_file(filp);
@ -88,20 +89,29 @@ setflags_out:
}
case EXT2_IOC_GETVERSION:
return put_user(inode->i_generation, (int __user *) arg);
case EXT2_IOC_SETVERSION:
case EXT2_IOC_SETVERSION: {
__u32 generation;
if (!inode_owner_or_capable(inode))
return -EPERM;
ret = mnt_want_write_file(filp);
if (ret)
return ret;
if (get_user(inode->i_generation, (int __user *) arg)) {
if (get_user(generation, (int __user *) arg)) {
ret = -EFAULT;
} else {
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
goto setversion_out;
}
mutex_lock(&inode->i_mutex);
inode->i_ctime = CURRENT_TIME_SEC;
inode->i_generation = generation;
mutex_unlock(&inode->i_mutex);
mark_inode_dirty(inode);
setversion_out:
mnt_drop_write_file(filp);
return ret;
}
case EXT2_IOC_GETRSVSZ:
if (test_opt(inode->i_sb, RESERVATION)
&& S_ISREG(inode->i_mode)

27
fs/jbd/checkpoint.c
View File

@ -453,8 +453,6 @@ out:
*
* Return <0 on error, 0 on success, 1 if there was nothing to clean up.
*
* Called with the journal lock held.
*
* This is the only part of the journaling code which really needs to be
* aware of transaction aborts. Checkpointing involves writing to the
* main filesystem area rather than to the journal, so it can proceed
@ -472,13 +470,14 @@ int cleanup_journal_tail(journal_t *journal)
if (is_journal_aborted(journal))
return 1;
/* OK, work out the oldest transaction remaining in the log, and
/*
* OK, work out the oldest transaction remaining in the log, and
* the log block it starts at.
*
* If the log is now empty, we need to work out which is the
* next transaction ID we will write, and where it will
* start. */
* start.
*/
spin_lock(&journal->j_state_lock);
spin_lock(&journal->j_list_lock);
transaction = journal->j_checkpoint_transactions;
@ -504,7 +503,25 @@ int cleanup_journal_tail(journal_t *journal)
spin_unlock(&journal->j_state_lock);
return 1;
}
spin_unlock(&journal->j_state_lock);
/*
* We need to make sure that any blocks that were recently written out
* --- perhaps by log_do_checkpoint() --- are flushed out before we
* drop the transactions from the journal. It's unlikely this will be
* necessary, especially with an appropriately sized journal, but we
* need this to guarantee correctness. Fortunately
* cleanup_journal_tail() doesn't get called all that often.
*/
if (journal->j_flags & JFS_BARRIER)
blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
spin_lock(&journal->j_state_lock);
if (!tid_gt(first_tid, journal->j_tail_sequence)) {
spin_unlock(&journal->j_state_lock);
/* Someone else cleaned up journal so return 0 */
return 0;
}
/* OK, update the superblock to recover the freed space.
* Physical blocks come first: have we wrapped beyond the end of
* the log? */

4
fs/jbd/recovery.c
View File

@ -20,6 +20,7 @@
#include <linux/fs.h>
#include <linux/jbd.h>
#include <linux/errno.h>
#include <linux/blkdev.h>
#endif
/*
@ -263,6 +264,9 @@ int journal_recover(journal_t *journal)
err2 = sync_blockdev(journal->j_fs_dev);
if (!err)
err = err2;
/* Flush disk caches to get replayed data on the permanent storage */
if (journal->j_flags & JFS_BARRIER)
blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
return err;
}

8
fs/quota/dquot.c
View File

@ -2125,6 +2125,8 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
mutex_unlock(&dqopt->dqio_mutex);
goto out_file_init;
}
if (dqopt->flags & DQUOT_QUOTA_SYS_FILE)
dqopt->info[type].dqi_flags |= DQF_SYS_FILE;
mutex_unlock(&dqopt->dqio_mutex);
spin_lock(&dq_state_lock);
dqopt->flags |= dquot_state_flag(flags, type);
@ -2464,7 +2466,7 @@ int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
spin_lock(&dq_data_lock);
ii->dqi_bgrace = mi->dqi_bgrace;
ii->dqi_igrace = mi->dqi_igrace;
ii->dqi_flags = mi->dqi_flags & DQF_MASK;
ii->dqi_flags = mi->dqi_flags & DQF_GETINFO_MASK;
ii->dqi_valid = IIF_ALL;
spin_unlock(&dq_data_lock);
mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
@ -2490,8 +2492,8 @@ int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
if (ii->dqi_valid & IIF_IGRACE)
mi->dqi_igrace = ii->dqi_igrace;
if (ii->dqi_valid & IIF_FLAGS)
mi->dqi_flags = (mi->dqi_flags & ~DQF_MASK) |
(ii->dqi_flags & DQF_MASK);
mi->dqi_flags = (mi->dqi_flags & ~DQF_SETINFO_MASK) |
(ii->dqi_flags & DQF_SETINFO_MASK);
spin_unlock(&dq_data_lock);
mark_info_dirty(sb, type);
/* Force write to disk */

6
include/linux/quota.h
View File

@ -230,7 +230,11 @@ struct mem_dqinfo {
struct super_block;
#define DQF_MASK 0xffff /* Mask for format specific flags */
#define DQF_INFO_DIRTY_B 16
#define DQF_GETINFO_MASK 0x1ffff /* Mask for flags passed to userspace */
#define DQF_SETINFO_MASK 0xffff /* Mask for flags modifiable from userspace */
#define DQF_SYS_FILE_B 16
#define DQF_SYS_FILE (1 << DQF_SYS_FILE_B) /* Quota file stored as system file */
#define DQF_INFO_DIRTY_B 31
#define DQF_INFO_DIRTY (1 << DQF_INFO_DIRTY_B) /* Is info dirty? */
extern void mark_info_dirty(struct super_block *sb, int type);