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  1. 02 3月, 2010 3 次提交
    • D
      ext4: fix error handling in migrate · f39490bc
      由 Dmitry Monakhov 提交于 
      Set i_nlink to zero for temporary inode from very beginning.
otherwise we may fail to start new journal handle and this
inode will be unreferenced but with i_nlink == 1
Since we hold inode reference it can not be pruned.

Also add missed journal_start retval check.
Signed-off-by: NDmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
      f39490bc
    • D
      ext4: deprecate obsoleted mount options · 437ca0fd
      由 Dmitry Monakhov 提交于 
      Declare following list of mount options as deprecated:
 - bsddf, miniddf
 - grpid, bsdgroups, nogrpid, sysvgroups

Declare following list of default mount options as deprecated:
 - bsdgroups
Signed-off-by: NDmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
      437ca0fd
    • T
      ext4: Fix fencepost error in chosing choosing group vs file preallocation. · cc483f10
      由 Tao Ma 提交于 
      The ext4 multiblock allocator decides whether to use group or file
preallocation based on the file size.  When the file size reaches
s_mb_stream_request (default is 16 blocks), it changes to use a
file-specific preallocation. This is cool, but it has a tiny problem.

See a simple script:
mkfs.ext4 -b 1024 /dev/sda8 1000000
mount -t ext4 -o nodelalloc /dev/sda8 /mnt/ext4
for((i=0;i<5;i++))
do
cat /mnt/4096>>/mnt/ext4/a	#4096 is a file with 4096 characters.
cat /mnt/4096>>/mnt/ext4/b
done
debuge4fs -R 'stat a' /dev/sda8|grep BLOCKS -A 1

And you get
BLOCKS:
(0-14):8705-8719, (15):2356, (16-19):8465-8468

So there are 3 extents, a bit strange for the lonely 15th logical
block.  As we write to the 16 blocks, we choose file preallocation in
ext4_mb_group_or_file, but in ext4_mb_normalize_request, we meet with
the 16*1024 range, so no preallocation will be carried. file b then
reserves the space after '2356', so when when write 16, we start from
another part.

This patch just change the check in ext4_mb_group_or_file, so
that for the lonely 15 we will still use group preallocation.
After the patch, we will get:
debuge4fs -R 'stat a' /dev/sda8|grep BLOCKS -A 1
BLOCKS:
(0-15):8705-8720, (16-19):8465-8468

Looks more sane. Thanks.
Signed-off-by: NTao Ma <tao.ma@oracle.com>
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
      cc483f10
  3. 25 2月, 2010 1 次提交
  5. 02 3月, 2010 1 次提交
  7. 25 2月, 2010 1 次提交
  9. 24 2月, 2010 1 次提交
  11. 17 2月, 2010 1 次提交
    • C
      ext4: Fix BUG_ON at fs/buffer.c:652 in no journal mode · 73b50c1c
      由 Curt Wohlgemuth 提交于 
      Calls to ext4_handle_dirty_metadata should only pass in an inode
pointer for inode-specific metadata, and not for shared metadata
blocks such as inode table blocks, block group descriptors, the
superblock, etc.

The BUG_ON can get tripped when updating a special device (such as a
block device) that is opened (so that i_mapping is set in
fs/block_dev.c) and the file system is mounted in no journal mode.

Addresses-Google-Bug: #2404870
Signed-off-by: NCurt Wohlgemuth <curtw@google.com>
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
      73b50c1c
  13. 16 2月, 2010 1 次提交
  15. 05 3月, 2010 1 次提交
  17. 16 2月, 2010 2 次提交
  19. 25 1月, 2010 2 次提交
  21. 07 12月, 2009 1 次提交
    • T
      ext4: Use slab allocator for sub-page sized allocations · d2eecb03
      由 Theodore Ts'o 提交于 
      Now that the SLUB seems to be fixed so that it respects the requested
alignment, use kmem_cache_alloc() to allocator if the block size of
the buffer heads to be allocated is less than the page size.
Previously, we were using 16k page on a Power system for each buffer,
even when the file system was using 1k or 4k block size.
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
      d2eecb03
  23. 01 1月, 2010 1 次提交
  25. 23 12月, 2009 1 次提交
  27. 23 1月, 2010 1 次提交
    • T
      ext4: Add block validity check when truncating indirect block mapped inodes · 1f2acb60
      由 Theodore Ts'o 提交于 
      Add checks to ext4_free_branches() to make sure a block number found
in an indirect block are valid before trying to free it.  If a bad
block number is found, stop freeing the indirect block immediately,
since the file system is corrupt and we will need to run fsck anyway.
This also avoids spamming the logs, and specifically avoids
driver-level "attempt to access beyond end of device" errors obscure
what is really going on.

If you get *really*, *really*, *really* unlucky, without this patch, a
supposed indirect block containing garbage might contain a reference
to a primary block group descriptor, in which case
ext4_free_branches() could end up zero'ing out a block group
descriptor block, and if then one of the block bitmaps for a block
group described by that bg descriptor block is not in memory, and is
read in by ext4_read_block_bitmap().  This function calls
ext4_valid_block_bitmap(), which assumes that bg_inode_table() was
validated at mount time and hasn't been modified since.  Since this
assumption is no longer valid, it's possible for the value
(ext4_inode_table(sb, desc) - group_first_block) to go negative, which
will cause ext4_find_next_zero_bit() to trigger a kernel GPF.

Addresses-Google-Bug: #2220436
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
      1f2acb60
  29. 16 2月, 2010 1 次提交
    • E
      ext4: Fix optional-arg mount options · 15121c18
      由 Eric Sandeen 提交于 
      We have 2 mount options, "barrier" and "auto_da_alloc" which may or
may not take a 1/0 argument.  This causes the ext4 superblock mount
code to subtract uninitialized pointers and pass the result to
kmalloc, which results in very noisy failures.

Per Ted's suggestion, initialize the args struct so that
we know whether match_token() found an argument for the
option, and skip match_int() if not.

Also, return error (0) from parse_options if we thought
we found an argument, but match_int() Fails.
Reported-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NEric Sandeen <sandeen@redhat.com>
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
      15121c18
  31. 05 2月, 2010 1 次提交
  33. 13 2月, 2010 8 次提交
  35. 12 2月, 2010 12 次提交