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  1. 16 7月, 2016 1 次提交
  3. 09 7月, 2016 5 次提交
  5. 07 7月, 2016 2 次提交
  7. 14 6月, 2016 1 次提交
  9. 09 6月, 2016 2 次提交
  11. 03 6月, 2016 9 次提交
  13. 21 5月, 2016 1 次提交
  15. 19 5月, 2016 1 次提交
  17. 12 5月, 2016 2 次提交
    • C
      f2fs: fix deadlock when flush inline data · ab47036d
      由 Chao Yu 提交于 
      Below backtrace info was reported by Yunlei He:

Call Trace:
 [<ffffffff817a9395>] schedule+0x35/0x80
 [<ffffffff817abb7d>] rwsem_down_read_failed+0xed/0x130
 [<ffffffff813c12a8>] call_rwsem_down_read_failed+0x18/0x
 [<ffffffff817ab1d0>] down_read+0x20/0x30
 [<ffffffffa02a1a12>] f2fs_evict_inode+0x242/0x3a0 [f2fs]
 [<ffffffff81217057>] evict+0xc7/0x1a0
 [<ffffffff81217cd6>] iput+0x196/0x200
 [<ffffffff812134f9>] __dentry_kill+0x179/0x1e0
 [<ffffffff812136f9>] dput+0x199/0x1f0
 [<ffffffff811fe77b>] __fput+0x18b/0x220
 [<ffffffff811fe84e>] ____fput+0xe/0x10
 [<ffffffff81097427>] task_work_run+0x77/0x90
 [<ffffffff81074d62>] exit_to_usermode_loop+0x73/0xa2
 [<ffffffff81003b7a>] do_syscall_64+0xfa/0x110
 [<ffffffff817acf65>] entry_SYSCALL64_slow_path+0x25/0x25

Call Trace:
 [<ffffffff817a9395>] schedule+0x35/0x80
 [<ffffffff81216dc3>] __wait_on_freeing_inode+0xa3/0xd0
 [<ffffffff810bc300>] ? autoremove_wake_function+0x40/0x4
 [<ffffffff8121771d>] find_inode_fast+0x7d/0xb0
 [<ffffffff8121794a>] ilookup+0x6a/0xd0
 [<ffffffffa02bc740>] sync_node_pages+0x210/0x650 [f2fs]
 [<ffffffff8122e690>] ? do_fsync+0x70/0x70
 [<ffffffffa02b085e>] block_operations+0x9e/0xf0 [f2fs]
 [<ffffffff8137b795>] ? bio_endio+0x55/0x60
 [<ffffffffa02b0942>] write_checkpoint+0x92/0xba0 [f2fs]
 [<ffffffff8117da57>] ? mempool_free_slab+0x17/0x20
 [<ffffffff8117de8b>] ? mempool_free+0x2b/0x80
 [<ffffffff8122e690>] ? do_fsync+0x70/0x70
 [<ffffffffa02a53e3>] f2fs_sync_fs+0x63/0xd0 [f2fs]
 [<ffffffff8129630f>] ? ext4_sync_fs+0xbf/0x190
 [<ffffffff8122e6b0>] sync_fs_one_sb+0x20/0x30
 [<ffffffff812002e9>] iterate_supers+0xb9/0x110
 [<ffffffff8122e7b5>] sys_sync+0x55/0x90
 [<ffffffff81003ae9>] do_syscall_64+0x69/0x110
 [<ffffffff817acf65>] entry_SYSCALL64_slow_path+0x25/0x25

With following excuting serials, we will set inline_node in inode page
after inode was unlinked, result in a deadloop described as below:
1. open file
2. write file
3. unlink file
4. write file
5. close file

Thread A				Thread B
 - dput
  - iput_final
   - inode->i_state |= I_FREEING
   - evict
    - f2fs_evict_inode
					 - f2fs_sync_fs
					  - write_checkpoint
					   - block_operations
					    - f2fs_lock_all (down_write(cp_rwsem))
     - f2fs_lock_op (down_read(cp_rwsem))
					    - sync_node_pages
					     - ilookup
					      - find_inode_fast
					       - __wait_on_freeing_inode
					         (wait on I_FREEING clear)

Here, we change to set inline_node flag only for linked inode for fixing.
Reported-by: NYunlei He <heyunlei@huawei.com>
Signed-off-by: NChao Yu <yuchao0@huawei.com>
Tested-by: NJaegeuk Kim <jaegeuk@kernel.org>
Cc: stable@vger.kernel.org # v4.6
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
      ab47036d
    • C
      f2fs: support in batch multi blocks preallocation · 46008c6d
      由 Chao Yu 提交于 
      This patch introduces reserve_new_blocks to make preallocation of multi
blocks as in batch operation, so it can avoid lots of redundant
operation, result in better performance.

In virtual machine, with rotational device:

time fallocate -l 32G /mnt/f2fs/file

Before:
real	0m4.584s
user	0m0.000s
sys	0m4.580s

After:
real	0m0.292s
user	0m0.000s
sys	0m0.272s

In x86, with SSD:

time fallocate -l 500G $MNT/testfile

Before : 24.758 s
After  :  1.604 s
Signed-off-by: NChao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: fix bugs and add performance numbers measured in x86.]
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
      46008c6d
  19. 08 5月, 2016 2 次提交
  21. 04 5月, 2016 1 次提交
  23. 02 5月, 2016 1 次提交
  25. 27 4月, 2016 2 次提交
  27. 15 4月, 2016 1 次提交
  29. 13 4月, 2016 1 次提交
  31. 05 4月, 2016 1 次提交
    • K
      mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros · 09cbfeaf
      由 Kirill A. Shutemov 提交于 
      PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time
ago with promise that one day it will be possible to implement page
cache with bigger chunks than PAGE_SIZE.

This promise never materialized.  And unlikely will.

We have many places where PAGE_CACHE_SIZE assumed to be equal to
PAGE_SIZE.  And it's constant source of confusion on whether
PAGE_CACHE_* or PAGE_* constant should be used in a particular case,
especially on the border between fs and mm.

Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much
breakage to be doable.

Let's stop pretending that pages in page cache are special.  They are
not.

The changes are pretty straight-forward:

 - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>;

 - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>;

 - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN};

 - page_cache_get() -> get_page();

 - page_cache_release() -> put_page();

This patch contains automated changes generated with coccinelle using
script below.  For some reason, coccinelle doesn't patch header files.
I've called spatch for them manually.

The only adjustment after coccinelle is revert of changes to
PAGE_CAHCE_ALIGN definition: we are going to drop it later.

There are few places in the code where coccinelle didn't reach.  I'll
fix them manually in a separate patch.  Comments and documentation also
will be addressed with the separate patch.

virtual patch

@@
expression E;
@@
- E << (PAGE_CACHE_SHIFT - PAGE_SHIFT)
+ E

@@
expression E;
@@
- E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT)
+ E

@@
@@
- PAGE_CACHE_SHIFT
+ PAGE_SHIFT

@@
@@
- PAGE_CACHE_SIZE
+ PAGE_SIZE

@@
@@
- PAGE_CACHE_MASK
+ PAGE_MASK

@@
expression E;
@@
- PAGE_CACHE_ALIGN(E)
+ PAGE_ALIGN(E)

@@
expression E;
@@
- page_cache_get(E)
+ get_page(E)

@@
expression E;
@@
- page_cache_release(E)
+ put_page(E)
Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: NMichal Hocko <mhocko@suse.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      09cbfeaf
  33. 18 3月, 2016 1 次提交
    • J
      fs crypto: move per-file encryption from f2fs tree to fs/crypto · 0b81d077
      由 Jaegeuk Kim 提交于 
      This patch adds the renamed functions moved from the f2fs crypto files.

1. definitions for per-file encryption used by ext4 and f2fs.

2. crypto.c for encrypt/decrypt functions
 a. IO preparation:
  - fscrypt_get_ctx / fscrypt_release_ctx
 b. before IOs:
  - fscrypt_encrypt_page
  - fscrypt_decrypt_page
  - fscrypt_zeroout_range
 c. after IOs:
  - fscrypt_decrypt_bio_pages
  - fscrypt_pullback_bio_page
  - fscrypt_restore_control_page

3. policy.c supporting context management.
 a. For ioctls:
  - fscrypt_process_policy
  - fscrypt_get_policy
 b. For context permission
  - fscrypt_has_permitted_context
  - fscrypt_inherit_context

4. keyinfo.c to handle permissions
  - fscrypt_get_encryption_info
  - fscrypt_free_encryption_info

5. fname.c to support filename encryption
 a. general wrapper functions
  - fscrypt_fname_disk_to_usr
  - fscrypt_fname_usr_to_disk
  - fscrypt_setup_filename
  - fscrypt_free_filename

 b. specific filename handling functions
  - fscrypt_fname_alloc_buffer
  - fscrypt_fname_free_buffer

6. Makefile and Kconfig

Cc: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: NMichael Halcrow <mhalcrow@google.com>
Signed-off-by: NIldar Muslukhov <ildarm@google.com>
Signed-off-by: NUday Savagaonkar <savagaon@google.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
      0b81d077
  35. 27 2月, 2016 2 次提交
  37. 23 2月, 2016 4 次提交
    • C
      f2fs: trace old block address for CoWed page · 7a9d7548
      由 Chao Yu 提交于 
      This patch enables to trace old block address of CoWed page for better
debugging.

f2fs_submit_page_mbio: dev = (1,0), ino = 1, page_index = 0x1d4f0, oldaddr = 0xfe8ab, newaddr = 0xfee90 rw = WRITE_SYNC, type = NODE
f2fs_submit_page_mbio: dev = (1,0), ino = 1, page_index = 0x1d4f8, oldaddr = 0xfe8b0, newaddr = 0xfee91 rw = WRITE_SYNC, type = NODE
f2fs_submit_page_mbio: dev = (1,0), ino = 1, page_index = 0x1d4fa, oldaddr = 0xfe8ae, newaddr = 0xfee92 rw = WRITE_SYNC, type = NODE

f2fs_submit_page_mbio: dev = (1,0), ino = 134824, page_index = 0x96, oldaddr = 0xf049b, newaddr = 0x2bbe rw = WRITE, type = DATA
f2fs_submit_page_mbio: dev = (1,0), ino = 134824, page_index = 0x97, oldaddr = 0xf049c, newaddr = 0x2bbf rw = WRITE, type = DATA
f2fs_submit_page_mbio: dev = (1,0), ino = 134824, page_index = 0x98, oldaddr = 0xf049d, newaddr = 0x2bc0 rw = WRITE, type = DATA

f2fs_submit_page_mbio: dev = (1,0), ino = 135260, page_index = 0x47, oldaddr = 0xffffffff, newaddr = 0xf2631 rw = WRITE, type = DATA
f2fs_submit_page_mbio: dev = (1,0), ino = 135260, page_index = 0x48, oldaddr = 0xffffffff, newaddr = 0xf2632 rw = WRITE, type = DATA
f2fs_submit_page_mbio: dev = (1,0), ino = 135260, page_index = 0x49, oldaddr = 0xffffffff, newaddr = 0xf2633 rw = WRITE, type = DATA
Signed-off-by: NChao Yu <chao2.yu@samsung.com>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
      7a9d7548
    • C
      f2fs: support revoking atomic written pages · 28bc106b
      由 Chao Yu 提交于 
      f2fs support atomic write with following semantics:
1. open db file
2. ioctl start atomic write
3. (write db file) * n
4. ioctl commit atomic write
5. close db file

With this flow we can avoid file becoming corrupted when abnormal power
cut, because we hold data of transaction in referenced pages linked in
inmem_pages list of inode, but without setting them dirty, so these data
won't be persisted unless we commit them in step 4.

But we should still hold journal db file in memory by using volatile
write, because our semantics of 'atomic write support' is incomplete, in
step 4, we could fail to submit all dirty data of transaction, once
partial dirty data was committed in storage, then after a checkpoint &
abnormal power-cut, db file will be corrupted forever.

So this patch tries to improve atomic write flow by adding a revoking flow,
once inner error occurs in committing, this gives another chance to try to
revoke these partial submitted data of current transaction, it makes
committing operation more like aotmical one.

If we're not lucky, once revoking operation was failed, EAGAIN will be
reported to user for suggesting doing the recovery with held journal file,
or retrying current transaction again.
Signed-off-by: NChao Yu <chao2.yu@samsung.com>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
      28bc106b
    • J
      f2fs crypto: f2fs_page_crypto() doesn't need a encryption context · ce855a3b
      由 Jaegeuk Kim 提交于 
      This patch adopts:
	ext4 crypto: ext4_page_crypto() doesn't need a encryption context

Since ext4_page_crypto() doesn't need an encryption context (at least
not any more), this allows us to simplify a number function signature
and also allows us to avoid needing to allocate a context in
ext4_block_write_begin().  It also means we no longer need a separate
ext4_decrypt_one() function.
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
      ce855a3b
    • J
      f2fs: preallocate blocks for buffered aio writes · 24b84912
      由 Jaegeuk Kim 提交于 
      This patch preallocates data blocks for buffered aio writes.
With this patch, we can avoid redundant locking and unlocking of node pages
given consecutive aio request.
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
      24b84912