From ac2a6494473b084f0d661d7d29d980712d1ba9b3 Mon Sep 17 00:00:00 2001
From: Eric Sandeen <sandeen@redhat.com>
Date: Tue, 28 Oct 2008 00:08:17 -0400
Subject: [PATCH] --- yaml --- r: 118228 b: refs/heads/master c:
 a996031c87e093017c0763326a08896a3a4817f4 h: refs/heads/master v: v3

---
 [refs]                 |  2 +-
 trunk/fs/ext4/balloc.c | 26 ++++++++++++++------------
 2 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/[refs] b/[refs]
index d63d55e727dc..0f800d69dbd5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8c3bf8a01c005385e9be0bc992e10abfb355278c
+refs/heads/master: a996031c87e093017c0763326a08896a3a4817f4
diff --git a/trunk/fs/ext4/balloc.c b/trunk/fs/ext4/balloc.c
index e28203ec45bd..d2003cdc36aa 100644
--- a/trunk/fs/ext4/balloc.c
+++ b/trunk/fs/ext4/balloc.c
@@ -599,18 +599,13 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
  */
 int ext4_has_free_blocks(struct ext4_sb_info *sbi, s64 nblocks)
 {
-	s64 free_blocks, dirty_blocks;
-	s64 root_blocks = 0;
+	s64 free_blocks, dirty_blocks, root_blocks;
 	struct percpu_counter *fbc = &sbi->s_freeblocks_counter;
 	struct percpu_counter *dbc = &sbi->s_dirtyblocks_counter;
 
 	free_blocks  = percpu_counter_read_positive(fbc);
 	dirty_blocks = percpu_counter_read_positive(dbc);
-
-	if (!capable(CAP_SYS_RESOURCE) &&
-		sbi->s_resuid != current->fsuid &&
-		(sbi->s_resgid == 0 || !in_group_p(sbi->s_resgid)))
-		root_blocks = ext4_r_blocks_count(sbi->s_es);
+	root_blocks = ext4_r_blocks_count(sbi->s_es);
 
 	if (free_blocks - (nblocks + root_blocks + dirty_blocks) <
 						EXT4_FREEBLOCKS_WATERMARK) {
@@ -623,13 +618,20 @@ int ext4_has_free_blocks(struct ext4_sb_info *sbi, s64 nblocks)
 		}
 	}
 	/* Check whether we have space after
-	 * accounting for current dirty blocks
+	 * accounting for current dirty blocks & root reserved blocks.
 	 */
-	if (free_blocks < ((root_blocks + nblocks) + dirty_blocks))
-		/* we don't have free space */
-		return 0;
+	if (free_blocks >= ((root_blocks + nblocks) + dirty_blocks))
+		return 1;
 
-	return 1;
+	/* Hm, nope.  Are (enough) root reserved blocks available? */
+	if (sbi->s_resuid == current->fsuid ||
+	    ((sbi->s_resgid != 0) && in_group_p(sbi->s_resgid)) ||
+	    capable(CAP_SYS_RESOURCE)) {
+		if (free_blocks >= (nblocks + dirty_blocks))
+			return 1;
+	}
+
+	return 0;
 }
 
 int ext4_claim_free_blocks(struct ext4_sb_info *sbi,