Etienne Dechamps bbdc6ae495 Add interface for file hole punching. ... This adds an interface to "punch holes" (deallocate space) in VFS files. The interface is identical to the Solaris VOP_SPACE interface. This interface is necessary for TRIM support on file vdevs. This is implemented using Linux fallocate(FALLOC_FL_PUNCH_HOLE), which was introduced in 2.6.38. For a brief time before 2.6.38 this was done using the truncate_range inode operation, which was quickly deprecated. This patch only supports FALLOC_FL_PUNCH_HOLE. This adds support for the truncate_range() inode operation to VOP_SPACE() for file hole punching. This API is deprecated and removed in 3.5, so it's only useful for old kernels. On tmpfs, the truncate_range() inode operation translates to shmem_truncate_range(). Unfortunately, this function expects the end offset to be inclusive and aligned to the end of a page. If it is not, the kernel will stop with a BUG_ON(). This patch fixes the issue by adapting to the constraints set forth by shmem_truncate_range(). Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #168		2012-10-04 16:22:07 -07:00
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fm	Remove autotools products	2012-08-27 11:46:23 -07:00
fs	Remove autotools products	2012-08-27 11:46:23 -07:00
sysevent	Remove autotools products	2012-08-27 11:46:23 -07:00
acl_impl.h	Public Release Prep	2010-05-17 15:18:00 -07:00
acl.h	Add VSA_ACE_* and MAX_ACL_ENTRIES defines	2011-01-27 16:06:09 -08:00
atomic.h	atomic_*_*_nv() functions need to return the new value atomically.	2010-09-17 16:03:25 -07:00
attr.h	Public Release Prep	2010-05-17 15:18:00 -07:00
bitmap.h	Public Release Prep	2010-05-17 15:18:00 -07:00
bootconf.h	Public Release Prep	2010-05-17 15:18:00 -07:00
bootprops.h	Stub out additional missing headers	2010-06-11 15:57:25 -07:00
buf.h	Public Release Prep	2010-05-17 15:18:00 -07:00
byteorder.h	Public Release Prep	2010-05-17 15:18:00 -07:00
callb.h	Public Release Prep	2010-05-17 15:18:00 -07:00
cmn_err.h	Public Release Prep	2010-05-17 15:18:00 -07:00
compress.h	Public Release Prep	2010-05-17 15:18:00 -07:00
condvar.h	Remove condition variable names	2012-04-06 12:06:19 -07:00
conf.h	Public Release Prep	2010-05-17 15:18:00 -07:00
console.h	Public Release Prep	2010-05-17 15:18:00 -07:00
cpupart.h	Stub out additional missing headers	2010-06-11 15:57:25 -07:00
cpuvar.h	Public Release Prep	2010-05-17 15:18:00 -07:00
crc32.h	Public Release Prep	2010-05-17 15:18:00 -07:00
cred.h	Add crgetfsuid()/crgetfsgid() helpers	2011-03-22 12:18:44 -07:00
ctype.h	Public Release Prep	2010-05-17 15:18:00 -07:00
ddi.h	Public Release Prep	2010-05-17 15:18:00 -07:00
debug.h	Add --enable-debug-log configure option	2012-02-02 11:27:54 -08:00
dirent.h	Public Release Prep	2010-05-17 15:18:00 -07:00
disp.h	Add kpreempt_[dis|en]able macros in <sys/disp.h>	2012-08-24 15:18:38 -07:00
dkio.h	Add DKIOCTRIM for TRIM support.	2012-09-02 14:22:01 -07:00
dklabel.h	Public Release Prep	2010-05-17 15:18:00 -07:00
dnlc.h	Add dnlc_reduce_cache() support	2011-04-06 20:06:03 -07:00
dumphdr.h	Public Release Prep	2010-05-17 15:18:00 -07:00
efi_partition.h	Public Release Prep	2010-05-17 15:18:00 -07:00
errno.h	Public Release Prep	2010-05-17 15:18:00 -07:00
extdirent.h	Add missing headers	2011-01-27 16:06:09 -08:00
fcntl.h	Use Linux flock struct	2011-02-23 14:32:15 -08:00
file.h	Add FIGNORECASE define	2011-01-27 16:06:09 -08:00
idmap.h	Add missing headers	2011-01-27 16:06:09 -08:00
int_limits.h	Public Release Prep	2010-05-17 15:18:00 -07:00
int_types.h	Public Release Prep	2010-05-17 15:18:00 -07:00
inttypes.h	Public Release Prep	2010-05-17 15:18:00 -07:00
isa_defs.h	Define the needed ISA types for ARM	2012-05-03 09:56:15 -07:00
kidmap.h	Add missing headers	2011-01-27 16:06:09 -08:00
kmem.h	Add KMC_NOEMERGENCY slab flag	2012-09-07 14:27:03 -07:00
kobj.h	Public Release Prep	2010-05-17 15:18:00 -07:00
kstat.h	Add basic dynamic kstat support	2012-02-02 11:28:00 -08:00
list.h	Add list_link_replace() function	2010-08-27 14:23:48 -07:00
mkdev.h	Public Release Prep	2010-05-17 15:18:00 -07:00
mntent.h	Public Release Prep	2010-05-17 15:18:00 -07:00
modctl.h	Public Release Prep	2010-05-17 15:18:00 -07:00
mode.h	Add vn_mode_to_vtype/vn_vtype to_mode helpers	2011-01-12 11:38:04 -08:00
mount.h	Public Release Prep	2010-05-17 15:18:00 -07:00
mutex.h	Mutex ASSERT on self deadlock	2012-08-27 12:00:55 -07:00
note.h	Public Release Prep	2010-05-17 15:18:00 -07:00
open.h	Public Release Prep	2010-05-17 15:18:00 -07:00
param.h	Correct MAXUID	2011-04-29 13:58:45 -07:00
pathname.h	Public Release Prep	2010-05-17 15:18:00 -07:00
policy.h	Minor policy interface	2011-01-27 16:06:09 -08:00
pool.h	Stub out additional missing headers	2010-06-11 15:57:25 -07:00
priv_impl.h	Stub out additional missing headers	2010-06-11 15:57:25 -07:00
proc.h	Cleanly split Linux proc.h (fs) from conflicting Solaris proc.h (process)	2010-06-11 15:57:25 -07:00
processor.h	Public Release Prep	2010-05-17 15:18:00 -07:00
pset.h	Stub out additional missing headers	2010-06-11 15:57:25 -07:00
random.h	Public Release Prep	2010-05-17 15:18:00 -07:00
refstr.h	Public Release Prep	2010-05-17 15:18:00 -07:00
resource.h	Public Release Prep	2010-05-17 15:18:00 -07:00
rwlock.h	Linux 3.2 compat: rw_semaphore.wait_lock is raw	2012-01-11 16:28:05 -08:00
sdt.h	Public Release Prep	2010-05-17 15:18:00 -07:00
sid.h	Add ksid_index_t and ksid_t types	2011-01-27 16:06:09 -08:00
signal.h	Split <sys/debug.h> header	2010-07-20 13:29:35 -07:00
stat.h	Public Release Prep	2010-05-17 15:18:00 -07:00
stropts.h	Public Release Prep	2010-05-17 15:18:00 -07:00
sunddi.h	Remove Solaris module emulation	2012-05-18 13:57:44 -07:00
sunldi.h	Public Release Prep	2010-05-17 15:18:00 -07:00
sysdc.h	Stub out additional missing headers	2010-06-11 15:57:25 -07:00
sysevent.h	Public Release Prep	2010-05-17 15:18:00 -07:00
sysmacros.h	PowerPC Compatibility	2012-07-02 09:33:09 -07:00
systeminfo.h	Read the /etc/hostid file directly.	2011-06-24 09:58:03 -07:00
systm.h	Public Release Prep	2010-05-17 15:18:00 -07:00
t_lock.h	Public Release Prep	2010-05-17 15:18:00 -07:00
taskq.h	Remove TQ_SLEEP -> KM_SLEEP mapping	2012-09-12 11:41:42 -07:00
thread.h	PowerPC Compatibility	2012-07-02 09:33:09 -07:00
time.h	Allow 64-bit timestamps to be set on 64-bit kernels	2011-12-12 11:06:03 -08:00
timer.h	Minor cleanup and Solaris API additions.	2010-06-11 15:57:25 -07:00
tsd.h	Prepend spl_ to all init/fini functions	2011-11-11 09:18:28 -08:00
types32.h	Public Release Prep	2010-05-17 15:18:00 -07:00
types.h	Linux 2.6.39 compat, zlib_deflate_workspacesize()	2011-04-20 14:39:15 -07:00
u8_textprep.h	Public Release Prep	2010-05-17 15:18:00 -07:00
uio.h	Add xuio_* structures and typedefs.	2010-06-11 15:57:25 -07:00
unistd.h	Public Release Prep	2010-05-17 15:18:00 -07:00
utsname.h	Public Release Prep	2010-05-17 15:18:00 -07:00
va_list.h	Public Release Prep	2010-05-17 15:18:00 -07:00
varargs.h	Public Release Prep	2010-05-17 15:18:00 -07:00
vfs_opreg.h	Public Release Prep	2010-05-17 15:18:00 -07:00
vfs.h	Renamed 'struct fid' for NFS	2011-04-29 12:10:54 -07:00
vmsystm.h	Public Release Prep	2010-05-17 15:18:00 -07:00
vnode.h	Add interface for file hole punching.	2012-10-04 16:22:07 -07:00
zmod.h	Prepend spl_ to all init/fini functions	2011-11-11 09:18:28 -08:00
zone.h	Public Release Prep	2010-05-17 15:18:00 -07:00