linux-toradex.git/fs/ext4/balloc.c, branch v3.0.44

ext4: pass a char * to ext4_count_free() instead of a buffer_head ptr

2012-08-09T15:27:51+00:00

commit f6fb99cadcd44660c68e13f6eab28333653621e6 upstream.

Make it possible for ext4_count_free to operate on buffers and not
just data in buffer_heads.

Signed-off-by: "Theodore Ts'o" 
Signed-off-by: Greg Kroah-Hartman

ext4: add flag to ext4_has_free_blocks

2011-05-25T11:41:26+00:00

This patch adds an allocation request flag to the ext4_has_free_blocks
function which enables the use of reserved blocks.  This will allow a
punch hole to proceed even if the disk is full.  Punching a hole may
require additional blocks to first split the extents.

Because ext4_has_free_blocks is a low level function, the flag needs
to be passed down through several functions listed below:

ext4_ext_insert_extent
ext4_ext_create_new_leaf
ext4_ext_grow_indepth
ext4_ext_split
ext4_ext_new_meta_block
ext4_mb_new_blocks
ext4_claim_free_blocks
ext4_has_free_blocks

[ext4 punch hole patch series 1/5 v7]

Signed-off-by: Allison Henderson 
Signed-off-by: "Theodore Ts'o" 
Reviewed-by: Mingming Cao

ext4: move ext4_add_groupblocks() to mballoc.c

2011-05-09T14:46:41+00:00

In preparation for the next patch, the function ext4_add_groupblocks()
is moved to mballoc.c, where it could use some static functions.

Signed-off-by: Amir Goldstein 
Signed-off-by: "Theodore Ts'o"

ext4: remove dead code in ext4_has_free_blocks()

2011-05-01T22:11:18+00:00

percpu_counter_sum_positive() never returns a negative value.

Signed-off-by: Shaohua Li 
Signed-off-by: "Theodore Ts'o"

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

ext4: add more tracepoints and use dev_t in the trace buffer

2011-03-22T01:38:05+00:00

- Add more ext4 tracepoints.
- Change ext4 tracepoints to use dev_t field with MAJOR/MINOR macros
so that we can save 4 bytes in the ring buffer on some platforms.
- Add sync_mode to ext4_da_writepages, ext4_da_write_pages, and
ext4_da_writepages_result tracepoints. Also remove for_reclaim
field from ext4_da_writepages since it is usually not very useful.

Signed-off-by: Jiaying Zhang 
Signed-off-by: "Theodore Ts'o"

ext4: replace i_delalloc_reserved_flag with EXT4_STATE_DELALLOC_RESERVED

2011-01-10T17:12:36+00:00

Remove the short element i_delalloc_reserved_flag from the
ext4_inode_info structure and replace it a new bit in i_state_flags.
Since we have an ext4_inode_info for every ext4 inode cached in the
inode cache, any savings we can produce here is a very good thing from
a memory utilization perspective.

Signed-off-by: "Theodore Ts'o"

ext4: rename mark_bitmap_end() to ext4_mark_bitmap_end()

2010-10-28T01:30:15+00:00

Fix a namespace leak from fs/ext4

Signed-off-by: "Theodore Ts'o"

ext4: make various ext4 functions be static

2010-10-28T01:30:14+00:00

These functions have no need to be exported beyond file context.

No functions needed to be moved for this commit; just some function
declarations changed to be static and removed from header files.

(A similar patch was submitted by Eric Sandeen, but I wanted to handle
code movement in separate patches to make sure code changes didn't
accidentally get dropped.)

Signed-off-by: Eric Sandeen 
Signed-off-by: "Theodore Ts'o"

ext4: Clean up s_dirt handling

2010-06-12T03:14:04+00:00

We don't need to set s_dirt in most of the ext4 code when journaling
is enabled.  In ext3/4 some of the summary statistics for # of free
inodes, blocks, and directories are calculated from the per-block
group statistics when the file system is mounted or unmounted.  As a
result the superblock doesn't have to be updated, either via the
journal or by setting s_dirt.  There are a few exceptions, most
notably when resizing the file system, where the superblock needs to
be modified --- and in that case it should be done as a journalled
operation if possible, and s_dirt set only in no-journal mode.

This patch will optimize out some unneeded disk writes when using ext4
with a journal.

Signed-off-by: "Theodore Ts'o"