Ronnie Sahlberg c406bb9ece cifs: improve fallocate emulation ... [ Upstream commit 966a3cb7c7db786452a87afdc3b48858fc4d4d6b ] RHBZ: 1866684 We don't have a real fallocate in the SMB2 protocol so we used to emulate fallocate by simply switching the file to become non-sparse. But as that could potantially consume a lot more data than we intended to fallocate (large sparse file and fallocating a thin slice in the middle) we would only do this IFF the fallocate request was for virtually the entire file. This patch improves this and starts allowing us to fallocate smaller chunks of a file by overwriting the region with 0, for the parts that are unallocated. The method used is to first query the server for FSCTL_QUERY_ALLOCATED_RANGES to find what is unallocated in the fallocate range and then to only overwrite-with-zero the unallocated ranges to fill in the holes. As overwriting-with-zero is different from just allocating blocks, and potentially much more expensive, we limit this to only allow fallocate ranges up to 1Mb in size. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Acked-by: Aurelien Aptel <aaptel@suse.com> Acked-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-07-14 16:56:00 +02:00
..
asn1.c	cifs: remove bogus debug code	2020-10-22 12:17:52 -05:00
cache.c	smb3: extend fscache mount volume coherency check	2020-06-06 11:16:25 -05:00
cifs_debug.c	cifs: Display local UID details for SMB sessions in DebugData	2020-07-01 19:38:19 -05:00
cifs_debug.h	cifs: Standardize logging output	2020-06-01 00:10:18 -05:00
cifs_dfs_ref.c	cifs: fix potential mismatch of UNC paths	2020-02-24 14:20:38 -06:00
cifs_fs_sb.h	smb3: add mount option to allow RW caching of share accessed by only 1 client	2019-09-16 11:43:38 -05:00
cifs_ioctl.h	cifs: add SMB3 change notification support	2020-02-06 09:14:28 -06:00
cifs_spnego.c	cifs: switch servers depending on binding state	2019-11-25 01:16:30 -06:00
cifs_spnego.h	[CIFS] Rename three structures to avoid camel case	2011-05-27 04:34:02 +00:00
cifs_unicode.c	Convert trailing spaces and periods in path components	2020-10-11 23:57:18 -05:00
cifs_unicode.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
cifs_uniupr.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156	2019-05-30 11:26:35 -07:00
cifsacl.c	cifs: fix a memleak with modefromsid	2020-11-15 23:05:33 -06:00
cifsacl.h	cifs: delete duplicated words in header files	2020-08-02 18:00:26 -05:00
cifsencrypt.c	mm, treewide: rename kzfree() to kfree_sensitive()	2020-08-07 11:33:22 -07:00
cifsfs.c	cifs: return proper error code in statfs(2)	2021-03-17 17:06:13 +01:00
cifsfs.h	cifs: update internal module version number	2020-10-23 23:41:49 -05:00
cifsglob.h	cifs: Adjust key sizes and key generation routines for AES256 encryption	2021-03-30 14:32:07 +02:00
cifspdu.h	cifs: Adjust key sizes and key generation routines for AES256 encryption	2021-03-30 14:32:07 +02:00
cifsproto.h	SMB3.1.1: Fix ids returned in POSIX query dir	2020-10-20 11:51:24 -05:00
cifsroot.c	cifs: Standardize logging output	2020-06-01 00:10:18 -05:00
cifssmb.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
connect.c	cifs: detect dead connections only when echoes are enabled.	2021-05-11 14:47:15 +02:00
dfs_cache.c	cifs: check pointer before freeing	2021-01-19 18:27:19 +01:00
dfs_cache.h	cifs: handle RESP_GET_DFS_REFERRAL.PathConsumed in reconnect	2020-08-02 18:00:26 -05:00
dir.c	cifs: report error instead of invalid when revalidating a dentry fails	2021-02-10 09:29:17 +01:00
dns_resolve.c	keys: Pass the network namespace into request_key mechanism	2019-06-27 23:02:12 +01:00
dns_resolve.h	DNS: Separate out CIFS DNS Resolver code	2010-08-05 17:17:51 +00:00
export.c	docs: fs: convert docs without extension to ReST	2019-07-31 13:31:05 -06:00
file.c	cifs: revalidate mapping when we open files for SMB1 POSIX	2021-04-10 13:36:10 +02:00
fs_context.c	cifs: move smb version mount options into fs_context.c	2020-10-22 12:17:31 -05:00
fs_context.h	cifs: move smb version mount options into fs_context.c	2020-10-22 12:17:31 -05:00
fscache.c	smb3: extend fscache mount volume coherency check	2020-06-06 11:16:25 -05:00
fscache.h	smb3: extend fscache mount volume coherency check	2020-06-06 11:16:25 -05:00
inode.c	cifs: fix allocation size on newly created files	2021-03-25 09:04:09 +01:00
ioctl.c	cifs: fix reference leak for tlink	2020-07-09 10:06:52 -05:00
Kconfig	smb3: smbdirect support can be configured by default	2020-04-07 13:39:00 -05:00
link.c	smb311: add support for using info level for posix extensions query	2020-06-12 08:54:12 -05:00
Makefile	cifs: add files to host new mount api	2020-10-22 12:16:24 -05:00
misc.c	Merge branch 'akpm' (patches from Andrew)	2020-08-07 11:39:33 -07:00
netmisc.c	cifs`: handle ERRBaduid for SMB1	2020-08-02 18:00:25 -05:00
nterr.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61	2019-05-24 17:36:45 +02:00
nterr.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61	2019-05-24 17:36:45 +02:00
ntlmssp.h	cifs: dynamic allocation of ntlmssp blob	2016-06-23 23:45:07 -05:00
readdir.c	SMB3: add support for recognizing WSL reparse tags	2020-10-22 12:17:59 -05:00
rfc1002pdu.h	[CIFS] whitespace cleanup	2007-06-05 18:30:44 +00:00
sess.c	smb3: do not attempt multichannel to server which does not support it	2021-05-11 14:47:37 +02:00
smb1ops.c	cifs: smb1: Try failing back to SetFileInfo if SetPathInfo fails	2020-08-02 18:00:25 -05:00
smb2file.c	cifs: allow unlock flock and OFD lock across fork	2020-03-22 22:49:09 -05:00
smb2glob.h	cifs: Adjust key sizes and key generation routines for AES256 encryption	2021-03-30 14:32:07 +02:00
smb2inode.c	cifs: do not send close in compound create+close requests	2021-03-17 17:06:28 +01:00
smb2maperror.c	cifs: map STATUS_ACCOUNT_LOCKED_OUT to -EACCES	2020-10-15 23:58:14 -05:00
smb2misc.c	cifs: Silently ignore unknown oplock break handle	2021-04-10 13:36:10 +02:00
smb2ops.c	cifs: improve fallocate emulation	2021-07-14 16:56:00 +02:00
smb2pdu.c	SMB3: incorrect file id in requests compounded with open	2021-06-03 09:00:44 +02:00
smb2pdu.h	smb3: Fix out-of-bounds bug in SMB2_negotiate()	2021-02-10 09:29:17 +01:00
smb2proto.h	cifs: do not send close in compound create+close requests	2021-03-17 17:06:28 +01:00
smb2status.h	cifs: don't use __constant_cpu_to_le32()	2019-05-07 23:24:54 -05:00
smb2transport.c	cifs: Adjust key sizes and key generation routines for AES256 encryption	2021-03-30 14:32:07 +02:00
smbdirect.c	cifs: Standardize logging output	2020-06-01 00:10:18 -05:00
smbdirect.h	cifs: smbd: Do not schedule work to send immediate packet on every receive	2020-04-07 12:41:16 -05:00
smbencrypt.c	fs: cifs: move from the crypto cipher API to the new DES library interface	2019-08-22 14:57:34 +10:00
smberr.h	cifs: map NT_STATUS_ERROR_WRITE_PROTECTED to -EROFS	2010-08-02 12:40:40 +00:00
smbfsctl.h	smb3: add some missing definitions from MS-FSCC	2020-10-23 15:38:10 -05:00
trace.c	smb3: Cleanup license mess	2019-01-24 09:37:33 -06:00
trace.h	smb3: add dynamic trace point to trace when credits obtained	2020-10-20 11:50:42 -05:00
transport.c	cifs: change noisy error message to FYI	2021-03-30 14:31:50 +02:00
winucase.c	Replace HTTP links with HTTPS ones: CIFS	2020-07-05 14:23:38 -06:00
xattr.c	CIFS: Add support for setting owner info, dos attributes, and create time	2020-01-26 19:24:17 -06:00