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SubjectRe: [PATCH] update i_blocks on UFS
On Sun, May 13, 2012 at 03:52:46PM +0200, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
> UFS code dosn't update i_blocks which leads to the problems ranging from wrong
> stat/du to long symlinks (as opposed to inline ones) being damaged. This is
> a fix.
>

Yes, when quota support was removed, code that update statistic
about usage of blocks also was removed. But why so big change to fix this?
I found this problem some time ago and fixed it with code bellow,
but may be I missed something?

From 3bba2473d2d09c0ebde5e287d694346ba0e4b4c0 Mon Sep 17 00:00:00 2001
From: Evgeniy Dushistov <dushistov@mail.ru>
Date: Fri, 18 Mar 2011 06:42:57 +0300
Subject: [PATCH] Looks like with quote support code was removed code
that update statistic about usage blocks per inode.
So fix this.

---
fs/ufs/balloc.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index 100d2ee..e7bf2fd 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -83,7 +83,7 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
ufs_error (sb, "ufs_free_fragments",
"bit already cleared for fragment %u", i);
}
-
+ inode_sub_bytes(inode, count << uspi->s_fshift);
fs32_add(sb, &ucg->cg_cs.cs_nffree, count);
uspi->cs_total.cs_nffree += count;
fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
@@ -189,6 +189,7 @@ do_more:
ubh_setblock(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
ufs_clusteracct (sb, ucpi, blkno, 1);
+ inode_sub_bytes(inode, uspi->s_bsize);

fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1);
uspi->cs_total.cs_nbfree++;
@@ -547,7 +548,7 @@ static u64 ufs_add_fragments(struct inode *inode, u64 fragment,
fs32_add(sb, &ucg->cg_frsum[fragsize - count], 1);
for (i = oldcount; i < newcount; i++)
ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i);
-
+ inode_add_bytes(inode, count << uspi->s_fshift);
fs32_sub(sb, &ucg->cg_cs.cs_nffree, count);
fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count);
uspi->cs_total.cs_nffree -= count;
@@ -649,6 +650,7 @@ cg_found:
for (i = count; i < uspi->s_fpb; i++)
ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, goal + i);
i = uspi->s_fpb - count;
+ inode_sub_bytes(inode, i << uspi->s_fshift);

fs32_add(sb, &ucg->cg_cs.cs_nffree, i);
uspi->cs_total.cs_nffree += i;
@@ -660,6 +662,7 @@ cg_found:
result = ufs_bitmap_search (sb, ucpi, goal, allocsize);
if (result == INVBLOCK)
return 0;
+ inode_add_bytes(inode, count << uspi->s_fshift);
for (i = 0; i < count; i++)
ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, result + i);

@@ -725,7 +728,7 @@ gotit:
ubh_clrblock (UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
ufs_clusteracct (sb, ucpi, blkno, -1);
-
+ inode_add_bytes(inode, uspi->s_bsize);
fs32_sub(sb, &ucg->cg_cs.cs_nbfree, 1);
uspi->cs_total.cs_nbfree--;
fs32_sub(sb, &UFS_SB(sb)->fs_cs(ucpi->c_cgx).cs_nbfree, 1);
--
1.7.3.4
--
/Evgeniy

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