From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu, 7 Sep 2017 22:19:35 +0000 (-0700)
Subject: Merge branch 'quota_scaling' of git://git.kernel.org/pub/scm/linux/kernel/git/jack... 
X-Git-Tag: v4.14-rc1~103
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ae8ac6b7dbfd67f883050421fd195c153d02f5f3;p=platform%2Fkernel%2Flinux-exynos.git

Merge branch 'quota_scaling' of git://git./linux/kernel/git/jack/linux-fs

Pull quota scaling updates from Jan Kara:
 "This contains changes to make the quota subsystem more scalable.

  Reportedly it improves number of files created per second on ext4
  filesystem on fast storage by about a factor of 2x"

* 'quota_scaling' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (28 commits)
  quota: Add lock annotations to struct members
  quota: Reduce contention on dq_data_lock
  fs: Provide __inode_get_bytes()
  quota: Inline dquot_[re]claim_reserved_space() into callsite
  quota: Inline inode_{incr,decr}_space() into callsites
  quota: Inline functions into their callsites
  ext4: Disable dirty list tracking of dquots when journalling quotas
  quota: Allow disabling tracking of dirty dquots in a list
  quota: Remove dq_wait_unused from dquot
  quota: Move locking into clear_dquot_dirty()
  quota: Do not dirty bad dquots
  quota: Fix possible corruption of dqi_flags
  quota: Propagate ->quota_read errors from v2_read_file_info()
  quota: Fix error codes in v2_read_file_info()
  quota: Push dqio_sem down to ->read_file_info()
  quota: Push dqio_sem down to ->write_file_info()
  quota: Push dqio_sem down to ->get_next_id()
  quota: Push dqio_sem down to ->release_dqblk()
  quota: Remove locking for writing to the old quota format
  quota: Do not acquire dqio_sem for dquot overwrites in v2 format
  ...
---

ae8ac6b7dbfd67f883050421fd195c153d02f5f3
diff --cc fs/quota/quota_v2.c
index 2259329,cdbf716..c0187cd
--- a/fs/quota/quota_v2.c
+++ b/fs/quota/quota_v2.c
@@@ -106,12 -114,19 +114,17 @@@ static int v2_read_file_info(struct sup
  	       sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF);
  	if (size != sizeof(struct v2_disk_dqinfo)) {
  		quota_error(sb, "Can't read info structure");
- 		return -1;
+ 		if (size < 0)
+ 			ret = size;
+ 		else
+ 			ret = -EIO;
+ 		goto out;
  	}
  	info->dqi_priv = kmalloc(sizeof(struct qtree_mem_dqinfo), GFP_NOFS);
- 	if (!info->dqi_priv)
- 		return -ENOMEM;
- 
+ 	if (!info->dqi_priv) {
 -		printk(KERN_WARNING
 -		       "Not enough memory for quota information structure.\n");
+ 		ret = -ENOMEM;
+ 		goto out;
+ 	}
  	qinfo = info->dqi_priv;
  	if (version == 0) {
  		/* limits are stored as unsigned 32-bit data */