linux/fs/ext4
Theodore Ts'o a5196f8cdf ext4: remove ext4_mb_return_to_preallocation()
This function was never implemented, except for a BUG_ON which was
tripping when ext4 is run without a journal.  The problem is that
although the comment asserts that "truncate (which is the only way to
free block) discards all preallocations", ext4_free_blocks() is also
called in various error recovery paths when blocks have been
allocated, but for various reasons, we were not able to use those data
blocks (for example, because we ran out of memory while trying to
manipulate the extent tree, or some other similar situation).

In addition to the fact that this function isn't implemented except
for the incorrect BUG_ON, the single caller of this function,
ext4_free_blocks(), doesn't use it all if the journal is enabled.

So remove the (stub) function entirely for now.  If we decide it's
better to add it back, it's only going to be useful with a relatively
large number of code changes anyway.

Google-Bug-Id: 3236408

Cc: Jiaying Zhang <jiayingz@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-01-10 12:47:07 -05:00
..
acl.c ext4: update ctime when changing the file's permission by setfacl 2010-06-15 12:19:59 -04:00
acl.h
balloc.c ext4: replace i_delalloc_reserved_flag with EXT4_STATE_DELALLOC_RESERVED 2011-01-10 12:12:36 -05:00
bitmap.c
block_validity.c ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*() 2010-10-27 21:30:14 -04:00
dir.c ext4: Use ext4_error_file() to print the pathname to the corrupted inode 2011-01-10 12:10:55 -05:00
ext4_extents.h ext4: drop ec_type from the ext4_ext_cache structure 2011-01-10 12:13:26 -05:00
ext4_jbd2.c ext4: Pass line numbers to ext4_error() and friends 2010-07-27 11:56:40 -04:00
ext4_jbd2.h ext4: dynamically allocate the jbd2_inode in ext4_inode_info as necessary 2011-01-10 12:29:43 -05:00
ext4.h ext4: flush the i_completed_io_list during ext4_truncate 2011-01-10 12:47:05 -05:00
extents.c ext4: flush the i_completed_io_list during ext4_truncate 2011-01-10 12:47:05 -05:00
file.c ext4: dynamically allocate the jbd2_inode in ext4_inode_info as necessary 2011-01-10 12:29:43 -05:00
fsync.c ext4: flush the i_completed_io_list during ext4_truncate 2011-01-10 12:47:05 -05:00
hash.c
ialloc.c ext4: drop i_state_flags on architectures with 64-bit longs 2011-01-10 12:18:25 -05:00
inode.c ext4: add error checking to calls to ext4_handle_dirty_metadata() 2011-01-10 12:46:59 -05:00
ioctl.c ext4: Add EXT4_IOC_TRIM ioctl to handle batched discard 2010-11-19 21:47:07 -05:00
Kconfig
Makefile ext4: use bio layer instead of buffer layer in mpage_da_submit_io 2010-10-27 21:30:10 -04:00
mballoc.c ext4: remove ext4_mb_return_to_preallocation() 2011-01-10 12:47:07 -05:00
mballoc.h
migrate.c ext4: ext4_ext_migrate should use NULL not 0 2011-01-10 12:11:00 -05:00
move_extent.c ext4: rename {ext,idx}_pblock and inline small extent functions 2010-10-27 21:30:14 -04:00
namei.c ext4: add error checking to calls to ext4_handle_dirty_metadata() 2011-01-10 12:46:59 -05:00
page-io.c ext4: test the correct variable in ext4_init_pageio() 2011-01-10 12:10:44 -05:00
resize.c ext4: add error checking to calls to ext4_handle_dirty_metadata() 2011-01-10 12:46:59 -05:00
super.c ext4: fix uninitialized variable in ext4_register_li_request 2011-01-10 12:30:17 -05:00
symlink.c ext4: symlink must be handled via filesystem specific operation 2010-05-16 02:00:00 -04:00
xattr_security.c ext4: constify xattr_handler 2010-05-21 18:31:19 -04:00
xattr_trusted.c ext4: constify xattr_handler 2010-05-21 18:31:19 -04:00
xattr_user.c ext4: constify xattr_handler 2010-05-21 18:31:19 -04:00
xattr.c ext2,ext3,ext4: clarify comment for extN_xattr_set_handle 2011-01-10 12:10:30 -05:00
xattr.h ext4: fix compile with CONFIG_EXT4_FS_XATTR disabled 2010-10-28 09:29:17 -07:00