Mikulas Patocka
9c5091f2ee
dm ioctl: use kmalloc if possible ...
If the parameter buffer is small enough, try to allocate it with kmalloc()
rather than vmalloc().
vmalloc is noticeably slower than kmalloc because it has to manipulate
page tables.
In my tests, on PA-RISC this patch speeds up activation 13 times.
On Opteron this patch speeds up activation by 5%.
This patch introduces a new function free_params() to free the
parameters and this uses new flags that record whether or not vmalloc()
was used and whether or not the input buffer must be wiped after use.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-21 20:23:36 +00:00
dm persistent data: improve improve space map block alloc failure message
2012-12-21 20:23:36 +00:00
md/bitmap:Don't use IS_ERR to judge alloc_page().
2012-10-11 13:45:36 +11:00
md/bitmap: record the space available for the bitmap in the superblock.
2012-05-22 13:55:34 +10:00
dm thin: replace dm_cell_release_singleton with cell_defer_except
2012-12-21 20:23:31 +00:00
dm thin: replace dm_cell_release_singleton with cell_defer_except
2012-12-21 20:23:31 +00:00
dm: use ACCESS_ONCE for sysfs values
2012-10-12 16:59:46 +01:00
dm bufio: prefetch
2012-03-28 18:41:29 +01:00
block: Add bio_clone_bioset(), bio_clone_kmalloc()
2012-09-09 10:35:39 +02:00
dm thin: commit before gathering status
2012-07-27 15:08:16 +01:00
dm: replace simple_strtoul
2012-07-27 15:07:59 +01:00
dm thin: commit before gathering status
2012-07-27 15:08:16 +01:00
block: Generalized bio pool freeing
2012-09-09 10:35:38 +02:00
dm ioctl: use kmalloc if possible
2012-12-21 20:23:36 +00:00
dm thin: commit before gathering status
2012-07-27 15:08:16 +01:00
connector/userns: replace netlink uses of cap_raised() with capable()
2012-05-10 23:21:39 -04:00
dm: use memweight()
2012-07-30 17:25:16 -07:00
dm mpath: fix check for null mpio in end_io fn
2012-10-12 16:59:42 +01:00
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm raid: round region_size to power of two
2012-12-21 20:23:33 +00:00
dm raid: use DM_ENDIO_INCOMPLETE
2012-12-21 20:23:32 +00:00
dm raid1: fix crash with mirror recovery and discard
2012-07-20 14:25:03 +01:00
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm: reject trailing characters in sccanf input
2012-03-28 18:41:26 +01:00
dm snapshot: optimize track_chunk
2012-12-21 20:23:33 +00:00
workqueue: deprecate flush[_delayed]_work_sync()
2012-08-20 14:51:24 -07:00
dm: disable WRITE SAME
2012-12-21 20:23:30 +00:00
dm persistent data: fix nested btree deletion
2012-12-21 20:23:32 +00:00
dm thin metadata: introduce dm_pool_abort_metadata
2012-07-27 15:08:15 +01:00
dm thin: use DMERR_LIMIT for errors
2012-12-21 20:23:34 +00:00
dm: use ACCESS_ONCE for sysfs values
2012-10-12 16:59:46 +01:00
dm: fix deadlock with request based dm and queue request_fn recursion
2012-11-23 14:32:54 +01:00
dm: retain table limits when swapping to new table with no devices
2012-09-26 23:45:45 +01:00
md faulty: use disk_stack_limits()
2012-10-22 10:44:55 +11:00
dm thin: move bio_prison code to separate module
2012-10-12 21:02:13 +01:00
md: linear supports TRIM
2012-10-11 13:08:44 +11:00
dm thin: move bio_prison code to separate module
2012-10-12 21:02:13 +01:00
md: make sure everything is freed when dm-raid stops an array.
2012-11-20 10:27:37 +11:00
Subject: [PATCH] md:change resync_mismatches to atomic64_t to avoid races
2012-10-11 14:17:59 +11:00
MD: change the parameter of md thread
2012-10-11 13:34:00 +11:00
md: raid 0 supports TRIM
2012-10-11 13:25:44 +11:00
md: add proper merge_bvec handling to RAID0 and Linear.
2012-03-19 12:46:39 +11:00
md/raid1{,0}: fix deadlock in bitmap_unplug.
2012-11-27 12:14:40 +11:00
md/raid1: prevent merging too large request
2012-07-31 10:03:53 +10:00
md/raid5: Make sure we clear R5_Discard when discard is finished.
2012-11-22 09:14:13 +11:00
MD: raid5 trim support
2012-10-11 13:49:05 +11:00
md/raid1{,0}: fix deadlock in bitmap_unplug.
2012-11-27 12:14:40 +11:00
md/raid10: fix problem with on-stack allocation of r10bio structure.
2012-08-18 09:51:42 +10:00
9c5091f2ee