- 25 Aug, 2011 14 commits
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Andreas Gruenbacher authored
Signed-off-by:
Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by:
Lars Ellenberg <lars.ellenberg@linbit.com>
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Andreas Gruenbacher authored
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Andreas Gruenbacher authored
Factor out duplicate code in got_NegAck(). Signed-off-by:
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Andreas Gruenbacher authored
Get rid of the ar_id_to_req() and ack_id_to_req() wrappers. Signed-off-by:
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Andreas Gruenbacher authored
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:
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Andreas Gruenbacher authored
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:
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Andreas Gruenbacher authored
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Andreas Gruenbacher authored
This is the only place where this function is used. Make it static. Signed-off-by:
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Andreas Gruenbacher authored
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:
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Andreas Gruenbacher authored
Converting the constants happens at compile time. Signed-off-by:
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Andreas Gruenbacher authored
Converting the constants happens at compile time. Signed-off-by:
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Andreas Gruenbacher authored
DRBD_MAGIC has nothing to do with block ids and the funny values computed were not actually used, anyway. Signed-off-by:
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Andreas Gruenbacher authored
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Andreas Gruenbacher authored
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- 23 Aug, 2011 3 commits
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Kay Sievers authored
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>
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Jens Axboe authored
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Tejun Heo authored
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:
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- 19 Aug, 2011 7 commits
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Lukas Czerner authored
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:
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Andrew Morton authored
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:
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WANG Cong authored
Signed-off-by:
WANG Cong <amwang@redhat.com> Cc: Paul Clements <Paul.Clements@steeleye.com> Signed-off-by:
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WANG Cong authored
This is only an error, no need to use KERN_CRIT log level. Signed-off-by:
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WANG Cong authored
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WANG Cong authored
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WANG Cong authored
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- 08 Aug, 2011 3 commits
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Joe Handzik authored
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:
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Joseph Handzik authored
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Linus Torvalds authored
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- 07 Aug, 2011 13 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc: Fix build with DEBUG_PAGEALLOC enabled.
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Rafael J. Wysocki authored
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>
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Linus Torvalds authored
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 authored
Since commit 1eb19a12 ("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:
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Al Viro authored
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:
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Linus Torvalds authored
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: -
Ari Savolainen authored
After commit 3567866b: "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:
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git://git.open-osd.org/linux-open-osdLinus Torvalds authored
* '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
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Linus Torvalds authored
The inode structure layout is largely random, and some of the vfs paths really do care. The path lookup in particular is already quite D$ intensive, and profiles show that accessing the 'inode->i_op->xyz' fields is quite costly. We already optimized the dcache to not unnecessarily load the d_op structure for members that are often NULL using the DCACHE_OP_xyz bits in dentry->d_flags, and this does something very similar for the inode ops that are used during pathname lookup. It also re-orders the fields so that the fields accessed by 'stat' are together at the beginning of the inode structure, and roughly in the order accessed. The effect of this seems to be in the 1-2% range for an empty kernel "make -j" run (which is fairly kernel-intensive, mostly in filename lookup), so it's visible. The numbers are fairly noisy, though, and likely depend a lot on exact microarchitecture. So there's more tuning to be done. Signed-off-by: -
Linus Torvalds authored
Gcc tends to generate better code with small integers, including the DCACHE_xyz flag tests - so move the common ones to be first in the list. Also just remove the unused DCACHE_INOTIFY_PARENT_WATCHED and DCACHE_AUTOFS_PENDING values, their users no longer exists in the source tree. And add a "unlikely()" to the DCACHE_OP_COMPARE test, since we want the common case to be a nice straight-line fall-through. Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: net: Compute protocol sequence numbers and fragment IDs using MD5. crypto: Move md5_transform to lib/md5.c
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Boaz Harrosh authored
Export everything from ore need exporting. Change Kbuild and Kconfig to build ore.ko as an independent module. Import ore from exofs Signed-off-by:Boaz Harrosh <bharrosh@panasas.com>
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Boaz Harrosh authored
ORE stands for "Objects Raid Engine" This patch is a mechanical rename of everything that was in ios.c and its API declaration to an ore.c and an osd_ore.h header. The ore engine will later be used by the pnfs objects layout driver. * File ios.c => ore.c * Declaration of types and API are moved from exofs.h to a new osd_ore.h * All used types are prefixed by ore_ from their exofs_ name. * Shift includes from exofs.h to osd_ore.h so osd_ore.h is independent, include it from exofs.h. Other than a pure rename there are no other changes. Next patch will move the ore into it's own module and will export the API to be used by exofs and later the layout driver Signed-off-by:
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