diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-29 01:53:31 +0300 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-29 01:53:31 +0300 |
commit | 81a046b18b331ed6192e6fd9ff6d12a1f18058cf (patch) | |
tree | 1d20ebe76c82cc2be603a0a4836d08ba9ec63ee0 /fs/btrfs/scrub.c | |
parent | 511fdb78442229ac11057b4a55c3f03c253c062f (diff) | |
parent | 4e19443da1941050b346f8fc4c368aa68413bc88 (diff) | |
download | linux-81a046b18b331ed6192e6fd9ff6d12a1f18058cf.tar.xz |
Merge tag 'for-5.6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"Features, highlights:
- async discard
- "mount -o discard=async" to enable it
- freed extents are not discarded immediatelly, but grouped
together and trimmed later, with IO rate limiting
- the "sync" mode submits short extents that could have been
ignored completely by the device, for SATA prior to 3.1 the
requests are unqueued and have a big impact on performance
- the actual discard IO requests have been moved out of
transaction commit to a worker thread, improving commit latency
- IO rate and request size can be tuned by sysfs files, for now
enabled only with CONFIG_BTRFS_DEBUG as we might need to
add/delete the files and don't have a stable-ish ABI for
general use, defaults are conservative
- export device state info in sysfs, eg. missing, writeable
- no discard of extents known to be untouched on disk (eg. after
reservation)
- device stats reset is logged with process name and PID that called
the ioctl
Fixes:
- fix missing hole after hole punching and fsync when using NO_HOLES
- writeback: range cyclic mode could miss some dirty pages and lead
to OOM
- two more corner cases for metadata_uuid change after power loss
during the change
- fix infinite loop during fsync after mix of rename operations
Core changes:
- qgroup assign returns ENOTCONN when quotas not enabled, used to
return EINVAL that was confusing
- device closing does not need to allocate memory anymore
- snapshot aware code got removed, disabled for years due to
performance problems, reimplmentation will allow to select wheter
defrag breaks or does not break COW on shared extents
- tree-checker:
- check leaf chunk item size, cross check against number of
stripes
- verify location keys for DIR_ITEM, DIR_INDEX and XATTR items
- new self test for physical -> logical mapping code, used for super
block range exclusion
- assertion helpers/macros updated to avoid objtool "unreachable
code" reports on older compilers or config option combinations"
* tag 'for-5.6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (84 commits)
btrfs: free block groups after free'ing fs trees
btrfs: Fix split-brain handling when changing FSID to metadata uuid
btrfs: Handle another split brain scenario with metadata uuid feature
btrfs: Factor out metadata_uuid code from find_fsid.
btrfs: Call find_fsid from find_fsid_inprogress
Btrfs: fix infinite loop during fsync after rename operations
btrfs: set trans->drity in btrfs_commit_transaction
btrfs: drop log root for dropped roots
btrfs: sysfs, add devid/dev_state kobject and device attributes
btrfs: Refactor btrfs_rmap_block to improve readability
btrfs: Add self-tests for btrfs_rmap_block
btrfs: selftests: Add support for dummy devices
btrfs: Move and unexport btrfs_rmap_block
btrfs: separate definition of assertion failure handlers
btrfs: device stats, log when stats are zeroed
btrfs: fix improper setting of scanned for range cyclic write cache pages
btrfs: safely advance counter when looking up bio csums
btrfs: remove unused member btrfs_device::work
btrfs: remove unnecessary wrapper get_alloc_profile
btrfs: add correction to handle -1 edge case in async discard
...
Diffstat (limited to 'fs/btrfs/scrub.c')
-rw-r--r-- | fs/btrfs/scrub.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index fd266a2d15ec..61b37c56a7fb 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -8,6 +8,7 @@ #include <linux/sched/mm.h> #include <crypto/hash.h> #include "ctree.h" +#include "discard.h" #include "volumes.h" #include "disk-io.h" #include "ordered-data.h" @@ -3682,7 +3683,11 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx, if (!cache->removed && !cache->ro && cache->reserved == 0 && cache->used == 0) { spin_unlock(&cache->lock); - btrfs_mark_bg_unused(cache); + if (btrfs_test_opt(fs_info, DISCARD_ASYNC)) + btrfs_discard_queue_work(&fs_info->discard_ctl, + cache); + else + btrfs_mark_bg_unused(cache); } else { spin_unlock(&cache->lock); } |