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Lukas Czerner b853b96b1d ext3: Add batched discard support for ext3 
Walk through allocation groups and trim all free extents. It can be
invoked through FITRIM ioctl on the file system. The main idea is to
provide a way to trim the whole file system if needed, since some SSD's
may suffer from performance loss after the whole device was filled (it
does not mean that fs is full!).

It search for free extents in allocation groups specified by Byte range
start -> start+len. When the free extent is within this range, blocks are
marked as used and then trimmed. Afterwards these blocks are marked as
free in per-group bitmap.

[JK: Fixed up error handling and trimming of a single group]

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>
2011-01-10 19:03:58 +01:00
..
9p
convert v9fs
2010-10-29 04:16:38 -04:00
adfs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
affs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
afs
convert afs
2010-10-29 04:17:13 -04:00
autofs4
autofs4 - remove ioctl mutex (bz23142)
2010-12-07 07:45:44 -08:00
befs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
bfs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
btrfs
Fix btrfs b0rkage
2010-12-20 09:09:57 -08:00
cachefiles
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
ceph
ceph: mark user pages dirty on direct-io reads
2010-12-17 09:54:40 -08:00
cifs
cifs: remove bogus remapping of error in cifs_filldir()
2010-12-08 18:47:54 +00:00
coda
convert get_sb_nodev() users
2010-10-29 04:16:31 -04:00
configfs
convert get_sb_single() users
2010-10-29 04:16:28 -04:00
cramfs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
debugfs
convert get_sb_single() users
2010-10-29 04:16:28 -04:00
devpts
convert get_sb_single() users
2010-10-29 04:16:28 -04:00
dlm
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
2010-10-22 17:33:16 -07:00
ecryptfs
BKL: remove extraneous #include <smp_lock.h>
2010-11-17 08:59:32 -08:00
efs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
exofs
convert get_sb_nodev() users
2010-10-29 04:16:31 -04:00
exportfs
exportfs: use dget_parent
2010-10-25 21:26:13 -04:00
ext2
fs/ext2/super.c: Use printf extension %pV
2011-01-06 11:52:14 +01:00
ext3
ext3: Add batched discard support for ext3
2011-01-10 19:03:58 +01:00
ext4
ext4: fix on-line resizing regression
2010-12-23 15:00:54 -05:00
fat
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
freevxfs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
fscache
Add a dummy printk function for the maintenance of unused printks
2010-08-12 09:51:35 -07:00
fuse
fuse: verify ioctl retries
2010-11-30 16:39:27 +01:00
gfs2
GFS2: Userland expects quota limit/warn/usage in 512b blocks
2010-11-19 11:20:29 +00:00
hfs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
hfsplus
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
hostfs
convert get_sb_nodev() users
2010-10-29 04:16:31 -04:00
hpfs
Merge branches 'irq-core-for-linus' and 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2010-10-31 20:40:24 -04:00
hppfs
convert get_sb_nodev() users
2010-10-29 04:16:31 -04:00
hugetlbfs
hugetlbfs: lessen the impact of a deprecation warning
2010-11-12 07:55:32 -08:00
isofs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
jbd
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-10-27 20:13:18 -07:00
jbd2
jbd2: fix /proc/fs/jbd2/<dev> when using an external journal
2010-11-17 21:46:26 -05:00
jffs2
Merge git://git.infradead.org/mtd-2.6
2010-10-30 08:31:35 -07:00
jfs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
lockd
BKL: remove extraneous #include <smp_lock.h>
2010-11-17 08:59:32 -08:00
logfs
logfs: fix "Kernel BUG at readwrite.c:1193"
2010-12-22 19:43:33 -08:00
minix
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
ncpfs
BKL: remove extraneous #include <smp_lock.h>
2010-11-17 08:59:32 -08:00
nfs
NFS: Fix panic after nfs_umount()
2010-12-10 13:01:50 -05:00
nfs_common
…
nfsd
nfsd: Fix possible BUG_ON firing in set_change_info
2010-12-08 11:44:04 -05:00
nilfs2
nilfs2: fix regression of garbage collection ioctl
2010-12-16 14:35:18 +09:00
nls
…
notify
fanotify: fill in the metadata_len field on struct fanotify_event_metadata
2010-12-15 13:58:18 -05:00
ntfs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
ocfs2
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2
2010-12-23 16:36:48 -08:00
omfs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
openpromfs
sparc: fix openpromfs compile
2010-11-08 14:29:39 -08:00
partitions
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
2010-10-25 07:45:10 -07:00
proc
Revert "vfs: show unreachable paths in getcwd and proc"
2010-12-05 16:39:45 -08:00
qnx4
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
quota
quota: Fix possible oops in __dquot_initialize()
2010-10-28 01:30:06 +02:00
ramfs
convert get_sb_nodev() users
2010-10-29 04:16:31 -04:00
reiserfs
reiserfs: don't acquire lock recursively in reiserfs_acl_chmod
2010-12-02 14:51:15 -08:00
romfs
convert get_sb_mtd() users to ->mount()
2010-10-29 04:16:26 -04:00
squashfs
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus
2010-10-29 08:48:58 -07:00
sysfs
convert sysfs
2010-10-29 04:17:08 -04:00
sysv
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
ubifs
convert ubifs
2010-10-29 04:16:36 -04:00
udf
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
ufs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
xfs
xfs: log timestamp changes to the source inode in rename
2010-12-09 17:07:02 -06:00
aio.c
new helper: ihold()
2010-10-25 21:26:11 -04:00
anon_inodes.c
convert get_sb_pseudo() users
2010-10-29 04:16:33 -04:00
attr.c
check ATTR_SIZE contraints in inode_change_ok
2010-08-09 16:47:39 -04:00
bad_inode.c
bkl: Remove locked .ioctl file operation
2010-08-14 00:24:24 +02:00
binfmt_aout.c
Don't dump task struct in a.out core-dumps
2010-10-14 10:57:40 -07:00
binfmt_elf_fdpic.c
…
binfmt_elf.c
ARM: 6342/1: fix ASLR of PIE executables
2010-10-08 10:02:53 +01:00
binfmt_em86.c
…
binfmt_flat.c
…
binfmt_misc.c
convert get_sb_single() users
2010-10-29 04:16:28 -04:00
binfmt_script.c
Make do_execve() take a const filename pointer
2010-08-17 18:07:43 -07:00
binfmt_som.c
…
bio-integrity.c
fs/bio-integrity.c: return -ENOMEM on kmalloc failure
2010-08-23 13:36:59 +02:00
bio.c
bio: take care not overflow page count when mapping/copying user data
2010-11-10 14:40:43 +01:00
block_dev.c
BKL: remove extraneous #include <smp_lock.h>
2010-11-17 08:59:32 -08:00
buffer.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2010-10-26 17:58:44 -07:00
char_dev.c
Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
2010-10-22 10:52:56 -07:00
compat_binfmt_elf.c
…
compat_ioctl.c
BKL: remove extraneous #include <smp_lock.h>
2010-11-17 08:59:32 -08:00
compat.c
exec: copy-and-paste the fixes into compat_do_execve() paths
2010-11-30 17:56:38 -08:00
dcache.c
fs: use RCU read side protection in d_validate
2010-10-25 21:26:13 -04:00
dcookies.c
…
direct-io.c
fs/direct-io.c: fix truncation error in dio_complete() return
2010-10-26 16:52:13 -07:00
drop_caches.c
simplify checks for I_CLEAR/I_FREEING
2010-08-09 16:47:44 -04:00
eventfd.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
eventpoll.c
epoll: make epoll_wait() use the hrtimer range feature
2010-10-27 18:03:18 -07:00
exec.c
install_special_mapping skips security_file_mmap check.
2010-12-15 12:30:36 -08:00
fcntl.c
fasync: Fix placement of FASYNC flag comment
2010-10-27 18:17:02 -07:00
fifo.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
file_table.c
fs: allow for more than 2^31 files
2010-10-26 16:52:15 -07:00
file.c
vfs: use kmalloc() to allocate fdmem if possible
2010-08-11 08:59:02 -07:00
filesystems.c
…
fs_struct.c
fs: fs_struct rwlock to spinlock
2010-08-18 08:35:46 -04:00
fs-writeback.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
2010-10-30 09:05:48 -07:00
generic_acl.c
vfs: update ctime when changing the file's permission by setfacl
2010-08-18 01:04:22 -04:00
inode.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2010-10-26 17:58:44 -07:00
internal.h
braino in internal.h
2010-10-29 05:49:13 -04:00
ioctl.c
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2010-11-19 19:46:45 -08:00
ioprio.c
ioprio: grab rcu_read_lock in sys_ioprio_{set,get}()
2010-11-15 10:23:31 +01:00
Kconfig
Merge 'staging-next' to Linus's tree
2010-10-28 09:44:56 -07:00
Kconfig.binfmt
coredump: default CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
2010-10-27 18:03:12 -07:00
libfs.c
convert get_sb_pseudo() users
2010-10-29 04:16:33 -04:00
locks.c
BKL: remove extraneous #include <smp_lock.h>
2010-11-17 08:59:32 -08:00
Makefile
Merge 'staging-next' to Linus's tree
2010-10-28 09:44:56 -07:00
mbcache.c
mbcache: Limit the maximum number of cache entries
2010-08-18 06:24:41 -04:00
mpage.c
…
namei.c
fanotify: if set by user unset FMODE_NONOTIFY before fsnotify_perm() is called
2010-12-07 16:14:21 -05:00
namespace.c
BKL: remove extraneous #include <smp_lock.h>
2010-11-17 08:59:32 -08:00
nfsctl.c
…
no-block.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
open.c
fix open/umount race
2010-10-29 04:14:56 -04:00
pipe.c
Un-inline get_pipe_info() helper function
2010-11-28 16:27:19 -08:00
pnode.c
fs: brlock vfsmount_lock
2010-08-18 08:35:48 -04:00
pnode.h
…
posix_acl.c
…
read_write.c
BKL: remove extraneous #include <smp_lock.h>
2010-11-17 08:59:32 -08:00
read_write.h
…
readdir.c
vfs: fix warning: 'dirent' is used uninitialized in this function
2010-08-09 20:45:05 -07:00
select.c
epoll: make epoll_wait() use the hrtimer range feature
2010-10-27 18:03:18 -07:00
seq_file.c
fs: take dcache_lock inside __d_path
2010-10-25 21:26:12 -04:00
signalfd.c
Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6
2010-10-26 10:13:10 -07:00
splice.c
Export 'get_pipe_info()' to other users
2010-11-28 14:09:57 -08:00
stack.c
…
stat.c
Mark arguments to certain syscalls as being const
2010-08-13 16:53:13 -07:00
statfs.c
add f_flags to struct statfs(64)
2010-08-09 16:48:44 -04:00
super.c
switch get_sb_ns() users
2010-10-29 04:17:03 -04:00
sync.c
get rid of file_fsync()
2010-08-09 16:47:43 -04:00
timerfd.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
utimes.c
Mark arguments to certain syscalls as being const
2010-08-13 16:53:13 -07:00
xattr_acl.c
…
xattr.c
…