Skip to content

K
Kernel

openeuler / Kernel
大约 1 年 前同步成功

通知 5
Star 0
Fork 0
K
Kernel

体验新版 GitCode，发现更多精彩内容 >>

切换分支/标签
  1. 23 5月, 2014 1 次提交
  3. 07 3月, 2014 1 次提交
    • T
      afs: don't use PREPARE_WORK · 05949945
      由 Tejun Heo 提交于 
      PREPARE_[DELAYED_]WORK() are being phased out.  They have few users
and a nasty surprise in terms of reentrancy guarantee as workqueue
considers work items to be different if they don't have the same work
function.

afs_call->async_work is multiplexed with multiple work functions.
Introduce afs_async_workfn() which invokes afs_call->async_workfn and
always use it as the work function and update the users to set the
->async_workfn field instead of overriding the work function using
PREPARE_WORK().

It would probably be best to route this with other related updates
through the workqueue tree.

Compile tested.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: David Howells <dhowells@redhat.com>
Cc: linux-afs@lists.infradead.org
      05949945
  5. 25 1月, 2014 1 次提交
  7. 17 3月, 2012 1 次提交
    • A
      afs: Read of file returns EBADMSG · 2c724fb9
      由 Anton Blanchard 提交于 
      A read of a large file on an afs mount failed:

# cat junk.file > /dev/null
cat: junk.file: Bad message

Looking at the trace, call->offset wrapped since it is only an
unsigned short. In afs_extract_data:

        _enter("{%u},{%zu},%d,,%zu", call->offset, len, last, count);
...

        if (call->offset < count) {
                if (last) {
                        _leave(" = -EBADMSG [%d < %zu]", call->offset, count);
                        return -EBADMSG;
                }

Which matches the trace:

[cat   ] ==> afs_extract_data({65132},{524},1,,65536)
[cat   ] <== afs_extract_data() = -EBADMSG [0 < 65536]

call->offset went from 65132 to 0. Fix this by making call->offset an
unsigned int.
Signed-off-by: NAnton Blanchard <anton@samba.org>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      2c724fb9
  9. 21 7月, 2011 1 次提交
    • J
      fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers · 02c24a82
      由 Josef Bacik 提交于 
      Btrfs needs to be able to control how filemap_write_and_wait_range() is called
in fsync to make it less of a painful operation, so push down taking i_mutex and
the calling of filemap_write_and_wait() down into the ->fsync() handlers.  Some
file systems can drop taking the i_mutex altogether it seems, like ext3 and
ocfs2.  For correctness sake I just pushed everything down in all cases to make
sure that we keep the current behavior the same for everybody, and then each
individual fs maintainer can make up their mind about what to do from there.
Thanks,
Acked-by: NJan Kara <jack@suse.cz>
Signed-off-by: NJosef Bacik <josef@redhat.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      02c24a82
  11. 20 7月, 2011 1 次提交
  13. 16 1月, 2011 1 次提交
  15. 15 1月, 2011 1 次提交
  17. 13 1月, 2011 1 次提交
  19. 07 1月, 2011 1 次提交
  21. 13 8月, 2010 1 次提交
  23. 12 8月, 2010 1 次提交
    • W
      AFS: Implement an autocell mount capability [ver #2] · bec5eb61
      由 wanglei 提交于 
      Implement the ability for the root directory of a mounted AFS filesystem to
accept lookups of arbitrary directory names, to interpet the names as the names
of cells, to look the cell names up in the DNS for AFSDB records and to mount
the root.cell volume of the nominated cell on the pseudo-directory created by
lookup.

This facility is requested by passing:

	-o autocell

to the mountpoint for which this is desired, usually the /afs mount.

To use this facility, a DNS upcall program is required for AFSDB records.  This
can be obtained from:

	http://people.redhat.com/~dhowells/afs/dns.afsdb.c

It should be compiled with -lresolv and -lkeyutils and installed as, say:

	/usr/sbin/dns.afsdb

Then the following line needs to be added to /sbin/request-key.conf:

	create	dns_resolver afsdb:*	*	/usr/sbin/dns.afsdb %k

This can be tested by mounting AFS, say:

	insmod dns_resolver.ko
	insmod af-rxrpc.ko
	insmod kafs.ko rootcell=grand.central.org
	mount -t afs "#grand.central.org:root.cell." /afs -o autocell

and doing:

	ls /afs/grand.central.org/

which should show:

	archive/  cvs/  doc/  local/  project/  service/  software/  user/  www/

if it works.
Signed-off-by: NWang Lei <wang840925@gmail.com>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      bec5eb61
  25. 10 8月, 2010 1 次提交
  27. 28 5月, 2010 1 次提交
  29. 22 5月, 2010 1 次提交
    • A
      AFS: Don't put struct file on the stack · f6d335c0
      由 Al Viro 提交于 
      Don't put struct file on the stack as it takes up quite a lot of space
and violates lifetime rules for struct file.

Rather than calling afs_readpage() indirectly from the directory routines by
way of read_mapping_page(), split afs_readpage() to have afs_page_filler()
that's given a key instead of a file and call read_cache_page(), specifying the
new function directly.  Use it in afs_readpages() as well.

Also make use of this in afs_mntpt_check_symlink() too for the same reason.
Reported-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
      f6d335c0
  31. 22 4月, 2010 1 次提交
  33. 06 3月, 2010 1 次提交
    • C
      make sure data is on disk before calling ->write_inode · 26821ed4
      由 Christoph Hellwig 提交于 
      Similar to the fsync issue fixed a while ago in commit
2daea67e we need to write for data to
actually hit the disk before writing out the metadata to guarantee
data integrity for filesystems that modify the inode in the data I/O
completion path.  Currently XFS and NFS handle this manually, and AFS
has a write_inode method that does nothing but waiting for data, while
others are possibly missing out on this.

Fortunately this change has a lot less impact than the fsync change
as none of the write_inode methods starts data writeout of any form
by itself.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      26821ed4
  35. 02 10月, 2009 1 次提交
  37. 03 4月, 2009 1 次提交
  39. 17 10月, 2008 1 次提交
  41. 27 7月, 2008 1 次提交
    • A
      [PATCH] sanitize ->permission() prototype · e6305c43
      由 Al Viro 提交于 
      * kill nameidata * argument; map the 3 bits in ->flags anybody cares
  about to new MAY_... ones and pass with the mask.
* kill redundant gfs2_iop_permission()
* sanitize ecryptfs_permission()
* fix remaining places where ->permission() instances might barf on new
  MAY_... found in mask.

The obvious next target in that direction is permission(9)

folded fix for nfs_permission() breakage from Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      e6305c43
  43. 30 4月, 2008 1 次提交
  45. 04 4月, 2008 1 次提交
  47. 28 3月, 2008 1 次提交
  49. 17 10月, 2007 1 次提交
    • A
      fs/afs/: possible cleanups · c1206a2c
      由 Adrian Bunk 提交于 
      This patch contains the following possible cleanups:
- make the following needlessly global functions static:
  - rxrpc.c: afs_send_pages()
  - vlocation.c: afs_vlocation_queue_for_updates()
  - write.c: afs_writepages_region()
- make the following needlessly global variables static:
  - mntpt.c: afs_mntpt_expiry_timeout
  - proc.c: afs_vlocation_states[]
  - server.c: afs_server_timeout
  - vlocation.c: afs_vlocation_timeout
  - vlocation.c: afs_vlocation_update_timeout
- #if 0 the following unused function:
  - cell.c: afs_get_cell_maybe()
- #if 0 the following unused variables:
  - callback.c: afs_vnode_update_timeout
  - cmservice.c: struct afs_cm_workqueue
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Acked-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c1206a2c
  51. 17 7月, 2007 1 次提交
  53. 31 5月, 2007 1 次提交
    • A
      afs: needs sched.h · 00c541ea
      由 Andrew Morton 提交于 
      mips:

fs/afs/flock.c: In function `afs_lock_may_be_available':
fs/afs/flock.c:55: error: dereferencing pointer to incomplete type
fs/afs/flock.c: In function `afs_lock_work':
fs/afs/flock.c:84: error: dereferencing pointer to incomplete type
fs/afs/flock.c:89: error: dereferencing pointer to incomplete type
fs/afs/flock.c:109: error: dereferencing pointer to incomplete type
fs/afs/flock.c:135: error: dereferencing pointer to incomplete type
fs/afs/flock.c:143: error: dereferencing pointer to incomplete type
fs/afs/flock.c:158: error: dereferencing pointer to incomplete type
fs/afs/flock.c:161: error: dereferencing pointer to incomplete type
fs/afs/flock.c:179: error: `TASK_UNINTERRUPTIBLE' undeclared (first use in this function)
fs/afs/flock.c:179: error: (Each undeclared identifier is reported only once
fs/afs/flock.c:179: error: for each function it appears in.)
fs/afs/flock.c:179: error: `TASK_INTERRUPTIBLE' undeclared (first use in this function)
fs/afs/flock.c:182: error: dereferencing pointer to incomplete type

Cc: David Howells <dhowells@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      00c541ea
  55. 22 5月, 2007 1 次提交
    • A
      Detach sched.h from mm.h · e8edc6e0
      由 Alexey Dobriyan 提交于 
      First thing mm.h does is including sched.h solely for can_do_mlock() inline
function which has "current" dereference inside. By dealing with can_do_mlock()
mm.h can be detached from sched.h which is good. See below, why.

This patch
a) removes unconditional inclusion of sched.h from mm.h
b) makes can_do_mlock() normal function in mm/mlock.c
c) exports can_do_mlock() to not break compilation
d) adds sched.h inclusions back to files that were getting it indirectly.
e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
   getting them indirectly

Net result is:
a) mm.h users would get less code to open, read, preprocess, parse, ... if
   they don't need sched.h
b) sched.h stops being dependency for significant number of files:
   on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
   after patch it's only 3744 (-8.3%).

Cross-compile tested on

	all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
	alpha alpha-up
	arm
	i386 i386-up i386-defconfig i386-allnoconfig
	ia64 ia64-up
	m68k
	mips
	parisc parisc-up
	powerpc powerpc-up
	s390 s390-up
	sparc sparc-up
	sparc64 sparc64-up
	um-x86_64
	x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig

as well as my two usual configs.
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e8edc6e0
  57. 11 5月, 2007 1 次提交
  59. 10 5月, 2007 2 次提交
    • D
      AFS: implement basic file write support · 31143d5d
      由 David Howells 提交于 
      Implement support for writing to regular AFS files, including:

 (1) write

 (2) truncate

 (3) fsync, fdatasync

 (4) chmod, chown, chgrp, utime.

AFS writeback attempts to batch writes into as chunks as large as it can manage
up to the point that it writes back 65535 pages in one chunk or it meets a
locked page.

Furthermore, if a page has been written to using a particular key, then should
another write to that page use some other key, the first write will be flushed
before the second is allowed to take place.  If the first write fails due to a
security error, then the page will be scrapped and reread before the second
write takes place.

If a page is dirty and the callback on it is broken by the server, then the
dirty data is not discarded (same behaviour as NFS).

Shared-writable mappings are not supported by this patch.

[akpm@linux-foundation.org: fix a bunch of warnings]
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      31143d5d
    • D
      AFS: AFS fixups · 416351f2
      由 David Howells 提交于 
      Make some miscellaneous changes to the AFS filesystem:

 (1) Assert RCU barriers on module exit to make sure RCU has finished with
     callbacks in this module.

 (2) Correctly handle the AFS server returning a zero-length read.

 (3) Split out data zapping calls into one function (afs_zap_data).

 (4) Rename some afs_file_*() functions to afs_*() where they apply to
     non-regular files too.

 (5) Be consistent about the presentation of volume ID:vnode ID in debugging
     output.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      416351f2
  61. 03 5月, 2007 3 次提交
  63. 28 4月, 2007 1 次提交
  65. 27 4月, 2007 5 次提交