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authorAndy Green <andy.green@linaro.org>2011-04-15 09:29:22 +0100
committerAndy Green <andy.green@linaro.org>2011-04-15 09:29:22 +0100
commitcaa70ccf8cc719acb0540b558b4e075796778db8 (patch)
treee8173307b04eca62168415be04e7800bdf011f80 /fs/ext4/inode.c
parent56d667f87e81d15d43f264007322f1179ce1722e (diff)
parent3ec10cd8b526c6b10170c2649002672ee2019e73 (diff)
Merge branch 'linux-linaro-2.6.38-master' into for-ubuntuu2
Diffstat (limited to 'fs/ext4/inode.c')
-rw-r--r--fs/ext4/inode.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9f7f9e49914..fee51dbf74d 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5460,13 +5460,12 @@ static int ext4_indirect_trans_blocks(struct inode *inode, int nrblocks,
/* if nrblocks are contiguous */
if (chunk) {
/*
- * With N contiguous data blocks, it need at most
- * N/EXT4_ADDR_PER_BLOCK(inode->i_sb) indirect blocks
- * 2 dindirect blocks
- * 1 tindirect block
+ * With N contiguous data blocks, we need at most
+ * N/EXT4_ADDR_PER_BLOCK(inode->i_sb) + 1 indirect blocks,
+ * 2 dindirect blocks, and 1 tindirect block
*/
- indirects = nrblocks / EXT4_ADDR_PER_BLOCK(inode->i_sb);
- return indirects + 3;
+ return DIV_ROUND_UP(nrblocks,
+ EXT4_ADDR_PER_BLOCK(inode->i_sb)) + 4;
}
/*
* if nrblocks are not contiguous, worse case, each block touch