Commit Graph

262700 Commits

Author SHA1 Message Date
Philipp Reisner 89e58e755e drbd: moved net_conf from mdev to tconn
Besides moving the struct member, everything else is generated by:

sed -i -e 's/mdev->net_conf/mdev->tconn->net_conf/g' \
       -e 's/odev->net_conf/odev->tconn->net_conf/g' \
       *.[ch]

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:27:03 +02:00
Philipp Reisner 2111438b30 drbd: Minimal struct drbd_tconn
Starting to dissolve the network connection from the actual
block devices.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:27:02 +02:00
Philipp Reisner 9749f30f1a idr: idr_for_each_entry() macro
Inspired by the list_for_each_entry() macro
2011-08-29 11:27:01 +02:00
Andreas Gruenbacher 6618bf1638 drbd: Interval tree bugfix
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:27:00 +02:00
Andreas Gruenbacher e3cfa7b26a drbd: Inline function overlaps() is now unused
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:59 +02:00
Andreas Gruenbacher 70dc65e1b3 drbd: Remove some useless paranoia code
The open_cnt check is an open-coded D_ASSERT() check.

In case the data.work queue is not empty, it does not really help to
know which drbd_work elements remained on that list: they will be freed
immediately afterwards, anyway.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:58 +02:00
Andreas Gruenbacher 841ce241fa drbd: Replace the ERR_IF macro with an assert-like macro
Remove the file name and line number from the syslog messages generated:
we have no duplicate function names, and no function contains the same
assertion more than once.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:57 +02:00
Andreas Gruenbacher e77a0a5cc1 drbd: Convert all constants in enum drbd_thread_state to upper case
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:56 +02:00
Andreas Gruenbacher 8554df1c6d drbd: Convert all constants in enum drbd_req_event to upper case
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:55 +02:00
Andreas Gruenbacher bb3bfe9614 drbd: Remove the unused hash tables
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:54 +02:00
Andreas Gruenbacher 8b946255f8 drbd: Use interval tree for overlapping epoch entry detection
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:53 +02:00
Andreas Gruenbacher 010f6e678f drbd: Put sector and size in struct drbd_epoch_entry into struct drbd_interval
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:52 +02:00
Andreas Gruenbacher bc9c5c4118 drbd: Use the read and write request trees for request lookups
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:50 +02:00
Andreas Gruenbacher dac1389ccc drbd: Add read_requests tree
We do not do collision detection for read requests, but we still need to
look up the request objects when we receive a package over the network.
Using the same data structure for read and write requests results in
simpler code once the tl_hash and app_reads_hash tables are removed.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-29 11:26:31 +02:00
Andreas Gruenbacher de696716e8 drbd: Use interval tree for overlapping write request detection
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:58:06 +02:00
Andreas Gruenbacher ace652acf2 drbd: Put sector and size in struct drbd_request into struct drbd_interval
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:58:05 +02:00
Andreas Gruenbacher 0939b0e5cd drbd: Add interval tree data structure
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:58:04 +02:00
Andreas Gruenbacher c3afd8f568 drbd: Request lookup code cleanup (4)
Factor out duplicate code in got_NegAck().

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:58:03 +02:00
Andreas Gruenbacher ae3388daae drbd: Request lookup code cleanup (3)
Get rid of the ar_id_to_req() and ack_id_to_req() wrappers.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:58:02 +02:00
Andreas Gruenbacher 668eebc6a1 drbd: Request lookup code cleanup (2)
Unify the ar_id_to_req() and ack_id_to_req() functions: make both fail
if the consistency check fails.  Move the request lookup code now
duplicated in both functions into its own function.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:58:01 +02:00
Andreas Gruenbacher 5162458564 drbd: Request lookup code cleanup (1)
Move _ar_id_to_req() to drbd_receiver.c and mark it non-inline.  Remove
the leading underscores from _ar_id_to_req() and _ack_id_to_req().  Mark
ar_hash_slot() inline.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:58:00 +02:00
Andreas Gruenbacher 9c50842a35 drbd: Update outdated comment
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:57:59 +02:00
Andreas Gruenbacher d628769b3c drbd: Move drbd_free_tl_hash() to drbd_main()
This is the only place where this function is used.  Make it static.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:57:58 +02:00
Andreas Gruenbacher 579b57ed73 drbd: Magic reserved block_id value cleanup
The ID_VACANT definition has become entirely irrelevant by now.

The is_syncer_block_id() macro does not improve the code, so eliminated
it.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:57:57 +02:00
Andreas Gruenbacher e7fad8af75 drbd: Endianness convert the constants instead of the variables
Converting the constants happens at compile time.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:57:57 +02:00
Andreas Gruenbacher ca9bc12b90 drbd: Get rid of BE_DRBD_MAGIC and BE_DRBD_MAGIC_BIG
Converting the constants happens at compile time.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:57:56 +02:00
Andreas Gruenbacher 9a8e77530f drbd: Consistently use block_id == ID_SYNCER for checksum based resync and online verify
DRBD_MAGIC has nothing to do with block ids and the funny values
computed were not actually used, anyway.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:57:55 +02:00
Andreas Gruenbacher 3980485361 drbd: Remove superfluous declaration
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:57:43 +02:00
Andreas Gruenbacher 28c455ceb2 drbd: Get rid of req_validator_fn typedef
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2011-08-25 14:57:31 +02:00
Kay Sievers e03c8dd149 loop: always allow userspace partitions and optionally support automatic scanning
Automatic partition scanning can be requested individually per loop
device during its setup by setting LO_FLAGS_PARTSCAN. By default, no
partition tables are scanned.

Userspace can now always add and remove partitions from all loop
devices, regardless if the in-kernel partition scanner is enabled or
not.

The needed partition minor numbers are allocated from the extended
minors space, the main loop device numbers will continue to match the
loop minors, regardless of the number of partitions used.

  # grep . /sys/class/block/loop1/loop/*
  /sys/block/loop1/loop/autoclear:0
  /sys/block/loop1/loop/backing_file:/home/kay/data/stuff/part.img
  /sys/block/loop1/loop/offset:0
  /sys/block/loop1/loop/partscan:1
  /sys/block/loop1/loop/sizelimit:0

  # ls -l /dev/loop*
  brw-rw---- 1 root disk   7,   0 Aug 14 20:22 /dev/loop0
  brw-rw---- 1 root disk   7,   1 Aug 14 20:23 /dev/loop1
  brw-rw---- 1 root disk 259,   0 Aug 14 20:23 /dev/loop1p1
  brw-rw---- 1 root disk 259,   1 Aug 14 20:23 /dev/loop1p2
  brw-rw---- 1 root disk   7,  99 Aug 14 20:23 /dev/loop99
  brw-rw---- 1 root disk 259,   2 Aug 14 20:23 /dev/loop99p1
  brw-rw---- 1 root disk 259,   3 Aug 14 20:23 /dev/loop99p2
  crw------T 1 root root  10, 237 Aug 14 20:22 /dev/loop-control

Cc: Karel Zak  <kzak@redhat.com>
Cc: Davidlohr Bueso <dave@gnu.org>
Acked-By: Tejun Heo <tj@kernel.org>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-23 20:12:04 +02:00
Jens Axboe e8b177cedc Merge branch 'for-3.2/core' into for-3.2/drivers 2011-08-23 20:01:11 +02:00
Tejun Heo d27769ec3d block: add GENHD_FL_NO_PART_SCAN
There are cases where suppressing partition scan is useful - e.g. for
lo devices and pseudo SATA devices which advertise to be a disk but
get upset on partition scan (some port multiplier control devices show
such behavior).

This patch adds GENHD_FL_NO_PART_SCAN which suppresses partition scan
regardless of the number of possible partitions.  disk_partitionable()
is renamed to disk_part_scan_enabled() as suppressing partition scan
doesn't imply the device can't be partitioned using
BLKPG_ADD/DEL_PARTITION calls from userland.  show_partition() now
directly tests disk_max_parts() to maintain backward-compatibility.

-v2: Updated to make it clear that only partition scan is suppressed
     not partitioning itself as suggested by Kay Sievers.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-23 20:01:04 +02:00
Lukas Czerner dfaa2ef68e loop: add discard support for loop devices
This commit adds discard support for loop devices. Discard is usually
supported by SSD and thinly provisioned devices as a method for
reclaiming unused space. This is no different than trying to reclaim
back space which is not used by the file system on the image, but it
still occupies space on the host file system.

We can do the reclamation on file system which does support hole
punching. So when discard request gets to the loop driver we can
translate that to punch a hole to the underlying file, hence reclaim
the free space.

This is very useful for trimming down the size of the image to only what
is really used by the file system on that image. Fstrim may be used for
that purpose.

It has been tested on ext4, xfs and btrfs with the image file systems
ext4, ext3, xfs and btrfs. ext4, or ext6 image on ext4 file system has
some problems but it seems that ext4 punch hole implementation is
somewhat flawed and it is unrelated to this commit.

Also this is a very good method of validating file systems punch hole
implementation.

Note that when encryption is used, discard support is disabled, because
using it might leak some information useful for possible attacker.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-19 14:50:46 +02:00
Andrew Morton 548ef6cc26 nbd-replace-some-printk-with-dev_warn-and-dev_info-checkpatch-fixes
ERROR: code indent should use tabs where possible
#30: FILE: drivers/block/nbd.c:578:
+^I        dev_info(disk_to_dev(lo->disk), "NBD_DISCONNECT\n");$

total: 1 errors, 0 warnings, 35 lines checked

NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or
      scripts/cleanfile

./patches/nbd-replace-some-printk-with-dev_warn-and-dev_info.patch has style problems, please review.

If any of these errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

Please run checkpatch prior to sending patches

Cc: Paul Clements <Paul.Clements@steeleye.com>
Cc: WANG Cong <amwang@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-19 14:48:28 +02:00
WANG Cong 5eedf5415c nbd: replace some printk with dev_warn() and dev_info()
Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-19 14:48:28 +02:00
WANG Cong 7742ce4ab4 nbd: lower the loglevel of an error message
This is only an error, no need to use KERN_CRIT log level.

Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-19 14:48:28 +02:00
WANG Cong 7f1b90f99a nbd: replace printk KERN_ERR with dev_err()
Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-19 14:48:22 +02:00
WANG Cong 1695b87f7d nbd: replace sysfs_create_file() with device_create_file()
Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-19 14:48:21 +02:00
WANG Cong 25ac0c2b97 nbd: use task_pid_nr() to get current pid
Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-19 14:48:17 +02:00
Joe Handzik f963d270cb cciss: add transport mode attribute to sys
Signed-off-by: Joseph Handzik <joseph.t.handzik@beardog.cce.hp.com>
Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-08 11:40:17 +02:00
Joseph Handzik 1304953700 cciss: Adds simple mode functionality
Signed-off-by: Joseph Handzik <joseph.t.handzik@beardog.cce.hp.com>
Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-08-08 11:40:15 +02:00
Linus Torvalds 322a8b0340 Linux 3.1-rc1 2011-08-07 18:23:30 -07:00
Linus Torvalds 9e23311345 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: Fix build with DEBUG_PAGEALLOC enabled.
2011-08-07 15:52:19 -07:00
Rafael J. Wysocki fc97114b8d sh: Fix boot crash related to SCI
Commit d006199e72a9 ("serial: sh-sci: Regtype probing doesn't need to be
fatal.") made sci_init_single() return when sci_probe_regmap() succeeds,
although it should return when sci_probe_regmap() fails.  This causes
systems using the serial sh-sci driver to crash during boot.

Fix the problem by using the right return condition.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-07 15:51:45 -07:00
Linus Torvalds f23c126bfa arm: remove stale export of 'sha_transform'
The generic library code already exports the generic function, this was
left-over from the ARM-specific version that just got removed.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-07 15:49:11 -07:00
Linus Torvalds 4d4487140d arm: remove "optimized" SHA1 routines
Since commit 1eb19a12bd ("lib/sha1: use the git implementation of
SHA-1"), the ARM SHA1 routines no longer work.  The reason? They
depended on the larger 320-byte workspace, and now the sha1 workspace is
just 16 words (64 bytes).  So the assembly version would overwrite the
stack randomly.

The optimized asm version is also probably slower than the new improved
C version, so there's no reason to keep it around.  At least that was
the case in git, where what appears to be the same assembly language
version was removed two years ago because the optimized C BLK_SHA1 code
was faster.

Reported-and-tested-by: Joachim Eastwood <manabian@gmail.com>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-07 14:07:03 -07:00
Al Viro 3295514841 fix rcu annotations noise in cred.h
task->cred is declared as __rcu, and access to other tasks' ->cred is,
indeed, protected.  Access to current->cred does not need rcu_dereference()
at all, since only the task itself can change its ->cred.  sparse, of
course, has no way of knowing that...

Add force-cast in current_cred(), make current_fsuid() et.al. use it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-07 13:42:35 -07:00
Linus Torvalds 7813b94a54 vfs: rename 'do_follow_link' to 'should_follow_link'
Al points out that the do_follow_link() helper function really is
misnamed - it's about whether we should try to follow a symlink or not,
not about actually doing the following.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-07 13:42:25 -07:00
Ari Savolainen 206b1d09a5 Fix POSIX ACL permission check
After commit 3567866bf261: "RCUify freeing acls, let check_acl() go ahead in
RCU mode if acl is cached" posix_acl_permission is being called with an
unsupported flag and the permission check fails. This patch fixes the issue.

Signed-off-by: Ari Savolainen <ari.m.savolainen@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-08-07 04:52:23 -04:00
Linus Torvalds c2f340a69c Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
* 'for-linus' of git://git.open-osd.org/linux-open-osd:
  ore: Make ore its own module
  exofs: Rename raid engine from exofs/ios.c => ore
  exofs: ios: Move to a per inode components & device-table
  exofs: Move exofs specific osd operations out of ios.c
  exofs: Add offset/length to exofs_get_io_state
  exofs: Fix truncate for the raid-groups case
  exofs: Small cleanup of exofs_fill_super
  exofs: BUG: Avoid sbi realloc
  exofs: Remove pnfs-osd private definitions
  nfs_xdr: Move nfs4_string definition out of #ifdef CONFIG_NFS_V4
2011-08-06 22:56:03 -07:00