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Chris Mason a555f810af Btrfs: Add mount -o compress-force 
The default btrfs mount -o compress mode will quickly back off
compressing a file if it notices that compression does not reduce the
size of the data being written.  This can save considerable CPU because
all future writes to the file go through uncompressed.

But some files are both very large and have mixed data stored in
them.  In that case, we want to add the ability to always try
compressing data before writing it.

This commit adds mount -o compress-force.  A later commit will add
a new inode flag that does the same thing.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-01-28 16:18:15 -05:00
..
acl.c Btrfs: deal with NULL acl sent to btrfs_set_acl 2010-01-17 20:40:22 -05:00
async-thread.c Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
async-thread.h Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
btrfs_inode.h Btrfs: Fix disk_i_size update corner case 2009-12-17 12:33:24 -05:00
compat.h Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code 2009-01-06 09:38:55 -05:00
compression.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2009-09-11 19:07:25 -04:00
compression.h Btrfs: Add zlib compression support 2008-10-29 14:49:59 -04:00
ctree.c Btrfs: Fix per root used space accounting 2009-12-17 12:33:35 -05:00
ctree.h Btrfs: Add mount -o compress-force 2010-01-28 16:18:15 -05:00
delayed-ref.c Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE) 2009-06-10 11:29:46 -04:00
delayed-ref.h Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE) 2009-06-10 11:29:46 -04:00
dir-item.c Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
disk-io.c Btrfs: Add delayed iput 2009-12-17 12:33:35 -05:00
disk-io.h Btrfs: leave btree locks spinning more often 2009-03-24 16:14:28 -04:00
export.c Btrfs: add snapshot/subvolume destroy ioctl 2009-09-21 16:00:26 -04:00
export.h NFS support for btrfs - v3 2008-09-25 11:04:06 -04:00
extent-tree.c Btrfs: fix possible panic on unmount 2010-01-17 20:40:30 -05:00
extent_io.c Btrfs: release delalloc reservations on extent item insertion 2009-10-08 15:21:10 -04:00
extent_io.h Btrfs: release delalloc reservations on extent item insertion 2009-10-08 15:21:10 -04:00
extent_map.c Btrfs: avoid null deref in unpin_extent_cache() 2009-11-11 14:20:18 -05:00
extent_map.h Btrfs: search for an allocation hint while filling file COW 2009-09-18 16:08:52 -04:00
file-item.c Btrfs: leave btree locks spinning more often 2009-03-24 16:14:28 -04:00
file.c Btrfs: Fix race in btrfs_mark_extent_written 2010-01-17 20:40:21 -05:00
free-space-cache.c Btrfs: fix how we set max_size for free space clusters 2009-11-11 14:20:17 -05:00
free-space-cache.h Btrfs: use hybrid extents+bitmap rb tree for free space 2009-07-24 09:23:30 -04:00
hash.h Btrfs: remove crc32c.h and use libcrc32c directly. 2009-06-10 11:29:53 -04:00
inode-item.c Btrfs: check size of inode backref before adding hardlink 2009-09-24 09:17:31 -04:00
inode-map.c Btrfs: do not reuse objectid of deleted snapshot/subvol 2009-09-21 15:56:00 -04:00
inode.c Btrfs: Add mount -o compress-force 2010-01-28 16:18:15 -05:00
ioctl.c Btrfs: Fix per root used space accounting 2009-12-17 12:33:35 -05:00
ioctl.h Btrfs: add snapshot/subvolume destroy ioctl 2009-09-21 16:00:26 -04:00
Kconfig Btrfs: make btrfs acls selectable 2009-02-04 09:28:28 -05:00
locking.c Btrfs: fix typos in comments 2009-04-02 16:46:06 -04:00
locking.h Btrfs: fix spinlock assertions on UP systems 2009-03-09 11:45:38 -04:00
Makefile Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE) 2009-06-10 11:29:46 -04:00
ordered-data.c Btrfs: align offsets for btrfs_ordered_update_i_size 2010-01-17 20:06:27 -05:00
ordered-data.h Btrfs: Add delayed iput 2009-12-17 12:33:35 -05:00
orphan.c Btrfs: change how subvolumes are organized 2009-09-21 15:56:00 -04:00
print-tree.c Btrfs: remove of redundant btrfs_header_level 2009-07-22 16:52:13 -04:00
print-tree.h Btrfs: Create extent_buffer interface for large blocksizes 2008-09-25 11:03:56 -04:00
ref-cache.c Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks 2009-02-04 09:27:02 -05:00
ref-cache.h Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks 2009-02-04 09:27:02 -05:00
relocation.c Btrfs, fix memory leaks in error paths 2010-01-17 20:40:20 -05:00
root-tree.c Btrfs: skip btrfs_release_path in btrfs_update_root and btrfs_del_root 2009-11-11 14:20:18 -05:00
struct-funcs.c Btrfs: Fix checkpatch.pl warnings 2009-01-05 21:25:51 -05:00
super.c Btrfs: Add mount -o compress-force 2010-01-28 16:18:15 -05:00
sysfs.c Btrfs: Fix checkpatch.pl warnings 2009-01-05 21:25:51 -05:00
transaction.c Btrfs: Fix per root used space accounting 2009-12-17 12:33:35 -05:00
transaction.h Btrfs: Avoid superfluous tree-log writeout 2009-12-15 21:24:25 -05:00
tree-defrag.c Btrfs: do extent allocation and reference count updates in the background 2009-03-24 16:14:25 -04:00
tree-log.c Btrfs: Avoid orphan inodes cleanup while replaying log 2009-12-17 12:33:33 -05:00
tree-log.h Btrfs: avoid tree log commit when there are no changes 2009-10-13 13:35:12 -04:00
version.h Update Btrfs files for in-kernel usage 2008-09-25 15:41:59 -04:00
version.sh Btrfs: Fixes for 2.6.28-rc API changes 2008-11-19 21:17:22 -05:00
volumes.c Btrfs, fix memory leaks in error paths 2010-01-17 20:40:20 -05:00
volumes.h Btrfs: make balance code choose more wisely when relocating 2009-09-21 19:23:48 -04:00
xattr.c Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
xattr.h Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
zlib.c Btrfs: correct error-handling zlib error handling 2009-08-07 13:51:33 -04:00