linux.git/fs/f2fs/inline.c, branch v5.11

f2fs: inline: fix wrong inline inode stat

2020-12-08T22:25:41+00:00

Miss to stat inline inode in f2fs_recover_inline_data.

Signed-off-by: Jack Qiu 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: inline: correct comment in f2fs_recover_inline_data

2020-12-08T22:25:41+00:00

In 3rd scene, it should remove data blocks instead of inline_data.

Signed-off-by: Jack Qiu 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: don't allow any writes on readonly mount

2020-12-07T16:41:16+00:00

generic_make_request: Trying to write to read-only block-device dm-5 (partno 0)
WARNING: CPU: 7 PID: 546 at block/blk-core.c:2190 generic_make_request_checks+0x664/0x690
pc : generic_make_request_checks+0x664/0x690
lr : generic_make_request_checks+0x664/0x690
Call trace:
 generic_make_request_checks+0x664/0x690
 generic_make_request+0xf0/0x3a4
 submit_bio+0x80/0x250
 __submit_merged_bio+0x368/0x4e0
 __submit_merged_write_cond.llvm.12294350193007536502+0xe0/0x3e8
 f2fs_wait_on_page_writeback+0x84/0x128
 f2fs_convert_inline_page+0x35c/0x6f8
 f2fs_convert_inline_inode+0xe0/0x2e0
 f2fs_file_mmap+0x48/0x9c
 mmap_region+0x41c/0x74c
 do_mmap+0x40c/0x4fc
 vm_mmap_pgoff+0xb8/0x114
 vm_mmap+0x34/0x48
 elf_map+0x68/0x108
 load_elf_binary+0x538/0xb70
 search_binary_handler+0xac/0x1dc
 exec_binprm+0x50/0x15c
 __do_execve_file+0x620/0x740
 __arm64_sys_execve+0x54/0x68
 el0_svc_common+0x9c/0x168
 el0_svc_handler+0x60/0x6c
 el0_svc+0x8/0xc

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: Handle casefolding with Encryption

2020-12-03T06:00:21+00:00

Expand f2fs's casefolding support to include encrypted directories.  To
index casefolded+encrypted directories, we use the SipHash of the
casefolded name, keyed by a key derived from the directory's fscrypt
master key.  This ensures that the dirhash doesn't leak information
about the plaintext filenames.

Encryption keys are unavailable during roll-forward recovery, so we
can't compute the dirhash when recovering a new dentry in an encrypted +
casefolded directory.  To avoid having to force a checkpoint when a new
file is fsync'ed, store the dirhash on-disk appended to i_name.

This patch incorporates work by Eric Biggers 
and Jaegeuk Kim .

Co-developed-by: Eric Biggers 
Signed-off-by: Eric Biggers 
Signed-off-by: Daniel Rosenberg 
Reviewed-by: Eric Biggers 
Signed-off-by: Jaegeuk Kim

f2fs: clean up kvfree

2020-09-14T18:15:37+00:00

After commit 0b6d4ca04a86 ("f2fs: don't return vmalloc() memory from
f2fs_kmalloc()"), f2fs_k{m,z}alloc() will not return vmalloc()'ed
memory, so clean up to use kfree() instead of kvfree() to free
vmalloc()'ed memory.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: fix error path in do_recover_data()

2020-07-08T17:11:19+00:00

- don't panic kernel if f2fs_get_node_page() fails in
f2fs_recover_inline_data() or f2fs_recover_inline_xattr();
- return error number of f2fs_truncate_blocks() to
f2fs_recover_inline_data()'s caller;

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: support to trace f2fs_fiemap()

2020-07-08T04:51:46+00:00

to show f2fs_fiemap()'s result as below:

f2fs_fiemap: dev = (251,0), ino = 7, lblock:0, pblock:1625292800, len:2097152, flags:0, ret:0

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

Merge tag 'f2fs-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

2020-06-09T18:28:59+00:00

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've added some knobs to enhance compression feature
  and harden testing environment. In addition, we've fixed several bugs
  reported from Android devices such as long discarding latency, device
  hanging during quota_sync, etc.

  Enhancements:
   - support lzo-rle algorithm
   - add two ioctls to release and reserve blocks for compression
   - support partial truncation/fiemap on compressed file
   - introduce sysfs entries to attach IO flags explicitly
   - add iostat trace point along with read io stat

  Bug fixes:
   - fix long discard latency
   - flush quota data by f2fs_quota_sync correctly
   - fix to recover parent inode number for power-cut recovery
   - fix lz4/zstd output buffer budget
   - parse checkpoint mount option correctly
   - avoid inifinite loop to wait for flushing node/meta pages
   - manage discard space correctly

  And some refactoring and clean up patches were added"

* tag 'f2fs-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (51 commits)
  f2fs: attach IO flags to the missing cases
  f2fs: add node_io_flag for bio flags likewise data_io_flag
  f2fs: remove unused parameter of f2fs_put_rpages_mapping()
  f2fs: handle readonly filesystem in f2fs_ioc_shutdown()
  f2fs: avoid utf8_strncasecmp() with unstable name
  f2fs: don't return vmalloc() memory from f2fs_kmalloc()
  f2fs: fix retry logic in f2fs_write_cache_pages()
  f2fs: fix wrong discard space
  f2fs: compress: don't compress any datas after cp stop
  f2fs: remove unneeded return value of __insert_discard_tree()
  f2fs: fix wrong value of tracepoint parameter
  f2fs: protect new segment allocation in expand_inode_data
  f2fs: code cleanup by removing ifdef macro surrounding
  f2fs: avoid inifinite loop to wait for flushing node pages at cp_error
  f2fs: flush dirty meta pages when flushing them
  f2fs: fix checkpoint=disable:%u%%
  f2fs: compress: fix zstd data corruption
  f2fs: add compressed/gc data read IO stat
  f2fs: fix potential use-after-free issue
  f2fs: compress: don't handle non-compressed data in workqueue
  ...

fs: move the fiemap definitions out of fs.h

2020-06-04T03:16:55+00:00

No need to pull the fiemap definitions into almost every file in the
kernel build.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Ritesh Harjani 
Reviewed-by: Darrick J. Wong 
Link: https://lore.kernel.org/r/20200523073016.2944131-5-hch@lst.de
Signed-off-by: Theodore Ts'o

f2fs: rework filename handling

2020-05-12T03:36:46+00:00

Rework f2fs's handling of filenames to use a new 'struct f2fs_filename'.
Similar to 'struct ext4_filename', this stores the usr_fname, disk_name,
dirhash, crypto_buf, and casefolded name.  Some of these names can be
NULL in some cases.  'struct f2fs_filename' differs from
'struct fscrypt_name' mainly in that the casefolded name is included.

For user-initiated directory operations like lookup() and create(),
initialize the f2fs_filename by translating the corresponding
fscrypt_name, then computing the dirhash and casefolded name if needed.

This makes the dirhash and casefolded name be cached for each syscall,
so we don't have to recompute them repeatedly.  (Previously, f2fs
computed the dirhash once per directory level, and the casefolded name
once per directory block.)  This improves performance.

This rework also makes it much easier to correctly handle all
combinations of normal, encrypted, casefolded, and encrypted+casefolded
directories.  (The fourth isn't supported yet but is being worked on.)

The only other cases where an f2fs_filename gets initialized are for two
filesystem-internal operations: (1) when converting an inline directory
to a regular one, we grab the needed disk_name and hash from an existing
f2fs_dir_entry; and (2) when roll-forward recovering a new dentry, we
grab the needed disk_name from f2fs_inode::i_name and compute the hash.

Signed-off-by: Eric Biggers 
Signed-off-by: Jaegeuk Kim