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Jan Kara 0f0a25bf51 ext4: fix trimming starting with block 0 with small blocksize 
When s_first_data_block is not zero (which happens e.g. when block size is 1KB)
and trim ioctl is called to start trimming from block 0, the math in
ext4_get_group_no_and_offset() overflows. The overall result is that ioctl
returns EINVAL which is kind of unexpected and we probably don't want
userspace tools to bother with internal details of filesystem structure.
So just silently increase starting offset (and shorten length) when starting
block is below s_first_data_block.

CC: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-01-11 15:16:31 -05:00
..
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
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
2010-12-14 11:08:13 -08:00
cachefiles
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
ceph
ceph: fix ioctl magic
2010-12-06 09:45:22 -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
ext2: remove dead code in ext2_xattr_get
2011-01-10 12:10:37 -05:00
ext3
ext2,ext3,ext4: clarify comment for extN_xattr_set_handle
2011-01-10 12:10:30 -05:00
ext4
ext4: fix trimming starting with block 0 with small blocksize
2011-01-11 15:16:31 -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
…
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
ext4: dynamically allocate the jbd2_inode in ext4_inode_info as necessary
2011-01-10 12:29:43 -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
fs: logfs: Fix up MTD=y build.
2010-11-01 16:34:56 -04:00
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 typo in comment of nilfs_dat_move function
2010-11-24 12:51:48 +09:00
nls
…
notify
make fanotify_read() restartable across signals
2010-10-30 14:07:35 -04:00
ntfs
new helper: mount_bdev()
2010-10-29 04:16:13 -04:00
ocfs2
ocfs2_connection_find() returns pointer to bad structure
2010-11-18 15:41:41 -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
…
bad_inode.c
…
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
…
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
…
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
…
filesystems.c
…
fs_struct.c
…
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
…
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
…
mpage.c
…
namei.c
fix open/umount race
2010-10-29 04:14:56 -04:00
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
…
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
…
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
…
statfs.c
…
super.c
switch get_sb_ns() users
2010-10-29 04:17:03 -04:00
sync.c
…
timerfd.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
utimes.c
…
xattr_acl.c
…
xattr.c
…