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

Browse source 
Pull quota, reiserfs, udf and ext2 updates from Jan Kara:
 "The branch contains changes to quota code so that it does not modify
  persistent flags in inode->i_flags (it was the only place in kernel
  doing that) and handle it inside filesystem's quotaon/off handlers
  instead.

  The branch also contains two UDF cleanups, a couple of reiserfs fixes
  and one fix for ext2 quota locking"

* 'generic' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext4: Improve comments in ext4_quota_{on|off}()
  udf: use kmap_atomic for memcpy copying
  udf: use octal for permissions
  quota: Remove dquot_quotactl_ops
  reiserfs: Remove i_attrs_to_sd_attrs()
  reiserfs: Remove useless setting of i_flags
  jfs: Remove jfs_get_inode_flags()
  ext2: Remove ext2_get_inode_flags()
  ext4: Remove ext4_get_inode_flags()
  quota: Stop setting IMMUTABLE and NOATIME flags on quota files
  jfs: Set flags on quota files directly
  ext2: Set flags on quota files directly
  reiserfs: Set flags on quota files directly
  ext4: Set flags on quota files directly
  reiserfs: Protect dquot_writeback_dquots() by s_umount semaphore
  reiserfs: Make cancel_old_flush() reliable
  ext2: Call dquot_writeback_dquots() with s_umount held
  reiserfs: avoid a -Wmaybe-uninitialized warning
This commit is contained in:
Linus Torvalds 2017-05-03 11:35:47 -07:00
commit a3719f34fd
24 changed files with 335 additions and 180 deletions
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1
fs/ext4/ext4.h
View file

@ -2477,7 +2477,6 @@ extern int ext4_truncate(struct inode *);
extern int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length);
extern int ext4_truncate_restart_trans(handle_t *, struct inode *, int nblocks);
extern void ext4_set_inode_flags(struct inode *);
extern void ext4_get_inode_flags(struct ext4_inode_info *);
extern int ext4_alloc_da_blocks(struct inode *inode);
extern void ext4_set_aops(struct inode *inode);
extern int ext4_writepage_trans_blocks(struct inode *);

26
fs/ext4/inode.c
View file

@ -4502,31 +4502,6 @@ void ext4_set_inode_flags(struct inode *inode)
S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|S_DAX);
}
/* Propagate flags from i_flags to EXT4_I(inode)->i_flags */
void ext4_get_inode_flags(struct ext4_inode_info *ei)
{
unsigned int vfs_fl;
unsigned long old_fl, new_fl;
do {
vfs_fl = ei->vfs_inode.i_flags;
old_fl = ei->i_flags;
new_fl = old_fl & ~(EXT4_SYNC_FL|EXT4_APPEND_FL|
EXT4_IMMUTABLE_FL|EXT4_NOATIME_FL|
EXT4_DIRSYNC_FL);
if (vfs_fl & S_SYNC)
new_fl |= EXT4_SYNC_FL;
if (vfs_fl & S_APPEND)
new_fl |= EXT4_APPEND_FL;
if (vfs_fl & S_IMMUTABLE)
new_fl |= EXT4_IMMUTABLE_FL;
if (vfs_fl & S_NOATIME)
new_fl |= EXT4_NOATIME_FL;
if (vfs_fl & S_DIRSYNC)
new_fl |= EXT4_DIRSYNC_FL;
} while (cmpxchg(&ei->i_flags, old_fl, new_fl) != old_fl);
}
static blkcnt_t ext4_inode_blocks(struct ext4_inode *raw_inode,
struct ext4_inode_info *ei)
{
@ -4963,7 +4938,6 @@ static int ext4_do_update_inode(handle_t *handle,
if (ext4_test_inode_state(inode, EXT4_STATE_NEW))
memset(raw_inode, 0, EXT4_SB(inode->i_sb)->s_inode_size);
ext4_get_inode_flags(ei);
raw_inode->i_mode = cpu_to_le16(inode->i_mode);
i_uid = i_uid_read(inode);
i_gid = i_gid_read(inode);

2
fs/ext4/ioctl.c
View file

@ -500,7 +500,6 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
switch (cmd) {
case EXT4_IOC_GETFLAGS:
ext4_get_inode_flags(ei);
flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
return put_user(flags, (int __user *) arg);
case EXT4_IOC_SETFLAGS: {
@ -888,7 +887,6 @@ resizefs_out:
struct fsxattr fa;
memset(&fa, 0, sizeof(struct fsxattr));
ext4_get_inode_flags(ei);
fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
if (ext4_has_feature_project(inode->i_sb)) {

74
fs/ext4/super.c
View file

@ -839,6 +839,28 @@ static void dump_orphan_list(struct super_block *sb, struct ext4_sb_info *sbi)
}
}
#ifdef CONFIG_QUOTA
static int ext4_quota_off(struct super_block *sb, int type);
static inline void ext4_quota_off_umount(struct super_block *sb)
{
int type;
if (ext4_has_feature_quota(sb)) {
dquot_disable(sb, -1,
DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
} else {
/* Use our quota_off function to clear inode flags etc. */
for (type = 0; type < EXT4_MAXQUOTAS; type++)
ext4_quota_off(sb, type);
}
}
#else
static inline void ext4_quota_off_umount(struct super_block *sb)
{
}
#endif
static void ext4_put_super(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
@ -847,7 +869,7 @@ static void ext4_put_super(struct super_block *sb)
int i, err;
ext4_unregister_li_request(sb);
dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
ext4_quota_off_umount(sb);
flush_workqueue(sbi->rsv_conversion_wq);
destroy_workqueue(sbi->rsv_conversion_wq);
@ -1218,7 +1240,6 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot);
static int ext4_write_info(struct super_block *sb, int type);
static int ext4_quota_on(struct super_block *sb, int type, int format_id,
const struct path *path);
static int ext4_quota_off(struct super_block *sb, int type);
static int ext4_quota_on_mount(struct super_block *sb, int type);
static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off);
@ -5344,11 +5365,33 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
if (err)
return err;
}
lockdep_set_quota_inode(path->dentry->d_inode, I_DATA_SEM_QUOTA);
err = dquot_quota_on(sb, type, format_id, path);
if (err)
if (err) {
lockdep_set_quota_inode(path->dentry->d_inode,
I_DATA_SEM_NORMAL);
} else {
struct inode *inode = d_inode(path->dentry);
handle_t *handle;
/*
* Set inode flags to prevent userspace from messing with quota
* files. If this fails, we return success anyway since quotas
* are already enabled and this is not a hard failure.
*/
inode_lock(inode);
handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 1);
if (IS_ERR(handle))
goto unlock_inode;
EXT4_I(inode)->i_flags |= EXT4_NOATIME_FL | EXT4_IMMUTABLE_FL;
inode_set_flags(inode, S_NOATIME | S_IMMUTABLE,
S_NOATIME | S_IMMUTABLE);
ext4_mark_inode_dirty(handle, inode);
ext4_journal_stop(handle);
unlock_inode:
inode_unlock(inode);
}
return err;
}
@ -5422,24 +5465,39 @@ static int ext4_quota_off(struct super_block *sb, int type)
{
struct inode *inode = sb_dqopt(sb)->files[type];
handle_t *handle;
int err;
/* Force all delayed allocation blocks to be allocated.
* Caller already holds s_umount sem */
if (test_opt(sb, DELALLOC))
sync_filesystem(sb);
if (!inode)
if (!inode || !igrab(inode))
goto out;
/* Update modification times of quota files when userspace can
* start looking at them */
err = dquot_quota_off(sb, type);
if (err)
goto out_put;
inode_lock(inode);
/*
* Update modification times of quota files when userspace can
* start looking at them. If we fail, we return success anyway since
* this is not a hard failure and quotas are already disabled.
*/
handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 1);
if (IS_ERR(handle))
goto out;
goto out_unlock;
EXT4_I(inode)->i_flags &= ~(EXT4_NOATIME_FL | EXT4_IMMUTABLE_FL);
inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE);
inode->i_mtime = inode->i_ctime = current_time(inode);
ext4_mark_inode_dirty(handle, inode);
ext4_journal_stop(handle);
out_unlock:
inode_unlock(inode);
out_put:
iput(inode);
return err;
out:
return dquot_quota_off(sb, type);
}