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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-11 10:16:13 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-11 10:16:13 -0700 |
commit | d54d35c501bcbd57b9722a6b371c0608b5d34199 (patch) | |
tree | 3dcbc5b272a7c18634a238f7503af452cbed1fd8 /Documentation | |
parent | a2225d931f75ddd3c39f4d0d195fad99dfd68671 (diff) | |
parent | dfa742803fbbd8b82790c152600e09c5ad99caca (diff) | |
download | linux-d54d35c501bcbd57b9722a6b371c0608b5d34199.tar.bz2 |
Merge tag 'f2fs-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've mainly focused on discard, aka unmap, control
along with fstrim for Android-specific usage model. In addition, we've
fixed writepage flow which returned EAGAIN previously resulting in EIO
of fsync(2) due to mapping's error state. In order to avoid old MM bug
[1], we decided not to use __GFP_ZERO for the mapping for node and
meta page caches. As always, we've cleaned up many places for future
fsverity and symbol conflicts.
Enhancements:
- do discard/fstrim in lower priority considering fs utilization
- split large discard commands into smaller ones for better responsiveness
- add more sanity checks to address syzbot reports
- add a mount option, fsync_mode=nobarrier, which can reduce # of cache flushes
- clean up symbol namespace with modified function names
- be strict on block allocation and IO control in corner cases
Bug fixes:
- don't use __GFP_ZERO for mappings
- fix error reports in writepage to avoid fsync() failure
- avoid selinux denial on CAP_RESOURCE on resgid/resuid
- fix some subtle race conditions in GC/atomic writes/shutdown
- fix overflow bugs in sanity_check_raw_super
- fix missing bits on get_flags
Clean-ups:
- prepare the generic flow for future fsverity integration
- fix some broken coding standard"
[1] https://lkml.org/lkml/2018/4/8/661
* tag 'f2fs-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (79 commits)
f2fs: fix to clear FI_VOLATILE_FILE correctly
f2fs: let sync node IO interrupt async one
f2fs: don't change wbc->sync_mode
f2fs: fix to update mtime correctly
fs: f2fs: insert space around that ':' and ', '
fs: f2fs: add missing blank lines after declarations
fs: f2fs: changed variable type of offset "unsigned" to "loff_t"
f2fs: clean up symbol namespace
f2fs: make set_de_type() static
f2fs: make __f2fs_write_data_pages() static
f2fs: fix to avoid accessing cross the boundary
f2fs: fix to let caller retry allocating block address
disable loading f2fs module on PAGE_SIZE > 4KB
f2fs: fix error path of move_data_page
f2fs: don't drop dentry pages after fs shutdown
f2fs: fix to avoid race during access gc_thread pointer
f2fs: clean up with clear_radix_tree_dirty_tag
f2fs: fix to don't trigger writeback during recovery
f2fs: clear discard_wake earlier
f2fs: let discard thread wait a little longer if dev is busy
...
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 3 | ||||
-rw-r--r-- | Documentation/filesystems/f2fs.txt | 16 |
2 files changed, 11 insertions, 8 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 540553c933b6..9b0123388f18 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -101,6 +101,7 @@ Date: February 2015 Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: Controls the trimming rate in batch mode. + <deprecated> What: /sys/fs/f2fs/<disk>/cp_interval Date: October 2015 @@ -140,7 +141,7 @@ Contact: "Shuoran Liu" <liushuoran@huawei.com> Description: Shows total written kbytes issued to disk. -What: /sys/fs/f2fs/<disk>/feature +What: /sys/fs/f2fs/<disk>/features Date: July 2017 Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index 12a147c9f87f..69f8de995739 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -182,13 +182,15 @@ whint_mode=%s Control which write hints are passed down to block passes down hints with its policy. alloc_mode=%s Adjust block allocation policy, which supports "reuse" and "default". -fsync_mode=%s Control the policy of fsync. Currently supports "posix" - and "strict". In "posix" mode, which is default, fsync - will follow POSIX semantics and does a light operation - to improve the filesystem performance. In "strict" mode, - fsync will be heavy and behaves in line with xfs, ext4 - and btrfs, where xfstest generic/342 will pass, but the - performance will regress. +fsync_mode=%s Control the policy of fsync. Currently supports "posix", + "strict", and "nobarrier". In "posix" mode, which is + default, fsync will follow POSIX semantics and does a + light operation to improve the filesystem performance. + In "strict" mode, fsync will be heavy and behaves in line + with xfs, ext4 and btrfs, where xfstest generic/342 will + pass, but the performance will regress. "nobarrier" is + based on "posix", but doesn't issue flush command for + non-atomic files likewise "nobarrier" mount option. test_dummy_encryption Enable dummy encryption, which provides a fake fscrypt context. The fake fscrypt context is used by xfstests. |