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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

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* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: Fix potential inode allocation soft lockup in Orlov allocator
  ext4: Make the extent validity check more paranoid
  jbd: use SWRITE_SYNC_PLUG when writing synchronous revoke records
  jbd2: use SWRITE_SYNC_PLUG when writing synchronous revoke records
  ext4: really print the find_group_flex fallback warning only once
This commit is contained in:
Linus Torvalds
2009-04-24 08:37:40 -07:00
parent 6ae85d6db4 b5451f7b26
commit a4277bf122
8 changed files with 46 additions and 30 deletions
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18
fs/ext4/extents.c
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@@ -326,11 +326,14 @@ ext4_ext_max_entries(struct inode *inode, int depth)
static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext)
{
ext4_fsblk_t block = ext_pblock(ext);
ext4_fsblk_t block = ext_pblock(ext), valid_block;
int len = ext4_ext_get_actual_len(ext);
struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
if (unlikely(block < le32_to_cpu(es->s_first_data_block) ||
((block + len) > ext4_blocks_count(es))))
valid_block = le32_to_cpu(es->s_first_data_block) +
EXT4_SB(inode->i_sb)->s_gdb_count;
if (unlikely(block <= valid_block ||
((block + len) > ext4_blocks_count(es))))
return 0;
else
return 1;
@@ -339,10 +342,13 @@ static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext)
static int ext4_valid_extent_idx(struct inode *inode,
struct ext4_extent_idx *ext_idx)
{
ext4_fsblk_t block = idx_pblock(ext_idx);
ext4_fsblk_t block = idx_pblock(ext_idx), valid_block;
struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
if (unlikely(block < le32_to_cpu(es->s_first_data_block) ||
(block >= ext4_blocks_count(es))))
valid_block = le32_to_cpu(es->s_first_data_block) +
EXT4_SB(inode->i_sb)->s_gdb_count;
if (unlikely(block <= valid_block ||
(block >= ext4_blocks_count(es))))
return 0;
else
return 1;