linux-stable/fs/cifs
Kirill A. Shutemov 48c935ad88 page-flags: define PG_locked behavior on compound pages
lock_page() must operate on the whole compound page.  It doesn't make
much sense to lock part of compound page.  Change code to use head
page's PG_locked, if tail page is passed.

This patch also gets rid of custom helper functions --
__set_page_locked() and __clear_page_locked().  They are replaced with
helpers generated by __SETPAGEFLAG/__CLEARPAGEFLAG.  Tail pages to these
helper would trigger VM_BUG_ON().

SLUB uses PG_locked as a bit spin locked.  IIUC, tail pages should never
appear there.  VM_BUG_ON() is added to make sure that this assumption is
correct.

[akpm@linux-foundation.org: fix fs/cifs/file.c]
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Steve Capper <steve.capper@linaro.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-15 17:56:32 -08:00
..
asn1.c [CIFS] cifs: Rename cERROR and cFYI to cifs_dbg 2013-05-04 22:17:23 -05:00
cache.c [CIFS] cifs: Rename cERROR and cFYI to cifs_dbg 2013-05-04 22:17:23 -05:00
cifs_debug.c cifs: fix MUST SecurityFlags filtering 2015-01-26 19:38:26 -06:00
cifs_debug.h cifs: convert printk(LEVEL...) to pr_<level> 2014-12-07 22:48:07 -06:00
cifs_dfs_ref.c Fix that several functions handle incorrect value of mapchars 2015-05-10 19:56:35 -05:00
cifs_fs_sb.h Allow conversion of characters in Mac remap range. Part 1 2014-10-16 15:20:20 -05:00
cifs_ioctl.h Add way to query server fs info for smb3 2015-08-20 10:19:25 -05:00
cifs_spnego.c KEYS: Merge the type-specific data with the payload data 2015-10-21 15:18:36 +01:00
cifs_spnego.h
cifs_unicode.c Fix to convert SURROGATE PAIR 2015-05-20 13:12:51 -05:00
cifs_unicode.h Remap reserved posix characters by default (part 3/3) 2014-10-16 15:20:20 -05:00
cifs_uniupr.h
cifsacl.c KEYS: Merge the type-specific data with the payload data 2015-10-21 15:18:36 +01:00
cifsacl.h cifs: fix SID binary to string conversion 2012-12-11 11:48:49 -06:00
cifsencrypt.c cifs: use server timestamp for ntlmv2 authentication 2015-09-22 15:24:02 -05:00
cifsfs.c kmemcg: account certain kmem allocations to memcg 2016-01-14 16:00:49 -08:00
cifsfs.h Merge branch 'work.copy_file_range' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-01-12 16:30:34 -08:00
cifsglob.h Add resilienthandles mount parm 2015-11-03 10:10:36 -06:00
cifspdu.h Add way to query server fs info for smb3 2015-08-20 10:19:25 -05:00
cifsproto.h Fix that several functions handle incorrect value of mapchars 2015-05-10 19:56:35 -05:00
cifssmb.c cifs: Fix use-after-free on mid_q_entry 2015-08-20 10:19:25 -05:00
connect.c Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 2015-11-13 16:40:36 -08:00
dir.c Fix that several functions handle incorrect value of mapchars 2015-05-10 19:56:35 -05:00
dns_resolve.c cifs: fix composing of mount options for DFS referrals 2013-05-24 13:08:31 -05:00
dns_resolve.h
export.c [CIFS] cifs: Rename cERROR and cFYI to cifs_dbg 2013-05-04 22:17:23 -05:00
file.c page-flags: define PG_locked behavior on compound pages 2016-01-15 17:56:32 -08:00
fscache.c NFS client updates for Linux 3.13 2013-11-08 05:57:46 +09:00
fscache.h CIFS: FS-Cache: Uncache unread pages in cifs_readpages() before freeing them 2013-09-18 10:17:03 -05:00
inode.c sched/wait: Fix the signal handling fix 2015-12-13 14:30:59 -08:00
ioctl.c vfs: pull btrfs clone API to vfs layer 2015-12-07 23:11:33 -05:00
Kconfig Allow parsing vers=3.11 on cifs mount 2015-06-27 20:23:32 -07:00
link.c switch ->get_link() to delayed_call, kill ->put_link() 2015-12-30 13:01:03 -05:00
Makefile cifs: add new case-insensitive conversion routines that are based on wchar_t's 2013-09-08 14:38:05 -05:00
misc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
netmisc.c Fix signed/unsigned pointer warning 2014-12-14 14:55:57 -06:00
nterr.c CIFS: Rename 7 error codes to NT_ style 2012-07-24 10:25:10 -05:00
nterr.h CIFS: Rename 7 error codes to NT_ style 2012-07-24 10:25:10 -05:00
ntlmssp.h CIFS: Add session setup/logoff capability for SMB2 2012-07-24 21:54:57 +04:00
readdir.c fs: Drop unlikely before IS_ERR(_OR_NULL) 2015-09-29 15:13:58 +02:00
rfc1002pdu.h
sess.c KEYS: Merge the type-specific data with the payload data 2015-10-21 15:18:36 +01:00
smb1ops.c Fix that several functions handle incorrect value of mapchars 2015-05-10 19:56:35 -05:00
smb2file.c Add resilienthandles mount parm 2015-11-03 10:10:36 -06:00
smb2glob.h CIFS: Fix too big maxBuf size for SMB3 mounts 2014-02-14 16:50:47 -06:00
smb2inode.c CIFS: Fix wrong filename length for SMB2 2014-08-25 16:45:17 -05:00
smb2maperror.c Fix problem recognizing symlinks 2014-10-02 14:10:04 -05:00
smb2misc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
smb2ops.c [SMB3] Enable checking for continuous availability and persistent handle support 2015-11-03 09:15:03 -06:00
smb2pdu.c Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 2015-11-13 16:40:36 -08:00
smb2pdu.h [SMB3] Send durable handle v2 contexts when use of persistent handles required 2015-11-03 09:26:27 -06:00
smb2proto.h mfsymlinks support for SMB2.1/SMB3. Part 2 query symlink 2014-10-16 15:20:20 -05:00
smb2status.h CIFS: Add SMB2 status codes 2012-07-24 10:25:13 -05:00
smb2transport.c Convert MessageID in smb2_hdr to LE 2014-12-14 14:55:45 -06:00
smbencrypt.c cifs: use memzero_explicit to clear stack buffer 2015-01-19 15:32:13 -06:00
smberr.h
smbfsctl.h [SMB3] Send durable handle v2 contexts when use of persistent handles required 2015-11-03 09:26:27 -06:00
transport.c cifs: Fix use-after-free on mid_q_entry 2015-08-20 10:19:25 -05:00
winucase.c [CIFS] quiet sparse compile warning 2013-09-08 14:54:24 -05:00
xattr.c posix acls: Remove duplicate xattr name definitions 2015-12-06 21:25:17 -05:00