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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2008-04-28 02:16:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:45 -0700
commit2588ef83f7933d8ae42868d7bf68fc8a3001186b (patch)
tree45b1ff7b854bdb99a91e49f4753aaa9a389ffa17 /fs/ext3
parent07c9938a4e2c92b796b163dc70e99d3d1870aaee (diff)
downloadlinux-2588ef83f7933d8ae42868d7bf68fc8a3001186b.tar.bz2
ext3: retry block allocation if new blocks are allocated from system zone
If the block allocator gets blocks out of system zone ext3 calls ext3_error. But if the file system is mounted with errors=continue retry block allocation. We need to mark the system zone blocks as in use to make sure retry don't pick them again System zone is the block range mapping block bitmap, inode bitmap and inode table. [akpm@linux-foundation.org: fix typo in comment] Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext3')
-rw-r--r--fs/ext3/balloc.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index dd4237e5e9ec..731fbc0f1291 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -164,10 +164,11 @@ read_block_bitmap(struct super_block *sb, unsigned int block_group)
block_group, le32_to_cpu(desc->bg_block_bitmap));
return NULL;
}
- if (!ext3_valid_block_bitmap(sb, desc, block_group, bh)) {
- brelse(bh);
- return NULL;
- }
+ ext3_valid_block_bitmap(sb, desc, block_group, bh);
+ /*
+ * file system mounted not to panic on error, continue with corrupt
+ * bitmap
+ */
return bh;
}
/*
@@ -1641,7 +1642,11 @@ allocated:
"Allocating block in system zone - "
"blocks from "E3FSBLK", length %lu",
ret_block, num);
- goto out;
+ /*
+ * claim_block() marked the blocks we allocated as in use. So we
+ * may want to selectively mark some of the blocks as free.
+ */
+ goto retry_alloc;
}
performed_allocation = 1;