linux.git/fs/f2fs, branch v5.14

f2fs: drop dirty node pages when cp is in error status

2021-07-07T05:05:06+00:00

Otherwise, writeback is going to fall in a loop to flush dirty inode forever
before getting SBI_CLOSING.

Signed-off-by: Jaegeuk Kim

f2fs: initialize page->private when using for our internal use

2021-07-06T00:17:30+00:00

We need to guarantee it's initially zero. Otherwise, it'll hurt entire flag
operations.

Fixes: b763f3bedc2d ("f2fs: restructure f2fs page.private layout")
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: compress: add nocompress extensions support

2021-07-02T01:34:31+00:00

When we create a directory with enable compression, all file write into
directory will try to compress.But sometimes we may know, new file
cannot meet compression ratio requirements.
We need a nocompress extension to skip those files to avoid unnecessary
compress page test.

After add nocompress_extension, the priority should be:
dir_flag < comp_extention,nocompress_extension < comp_file_flag,
no_comp_file_flag.

Priority in between FS_COMPR_FL, FS_NOCOMP_FS, extensions:
   * compress_extension=so; nocompress_extension=zip; chattr +c dir;
     touch dir/foo.so; touch dir/bar.zip; touch dir/baz.txt; then foo.so
     and baz.txt should be compresse, bar.zip should be non-compressed.
     chattr +c dir/bar.zip can enable compress on bar.zip.
   * compress_extension=so; nocompress_extension=zip; chattr -c dir;
     touch dir/foo.so; touch dir/bar.zip; touch dir/baz.txt; then foo.so
     should be compresse, bar.zip and baz.txt should be non-compressed.
     chattr+c dir/bar.zip; chattr+c dir/baz.txt; can enable compress on
     bar.zip and baz.txt.

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

f2fs: remove false alarm on iget failure during GC

2021-06-28T15:47:52+00:00

This patch removes setting SBI_NEED_FSCK when GC gets an error on f2fs_iget,
since f2fs_iget can give ENOMEM and others by race condition.
If we set this critical fsck flag, we'll get EIO during fsync via the below
code path.

In f2fs_inplace_write_data(),

	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK) || f2fs_cp_error(sbi)) {
		err = -EIO;
		goto drop_bio;
	}

Fixes: 9557727876674 ("f2fs: drop inplace IO if fs status is abnormal")
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: enable extent cache for compression files in read-only

2021-06-28T15:43:51+00:00

Let's allow extent cache for RO partition.

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

f2fs: introduce f2fs_casefolded_name slab cache

2021-06-23T08:09:35+00:00

Add a slab cache: "f2fs_casefolded_name" for memory allocation
of casefold name.

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

f2fs: swap: support migrating swapfile in aligned write mode

2021-06-23T08:09:35+00:00

This patch supports to migrate swapfile in aligned write mode during
swapon in order to keep swapfile being aligned to section as much as
possible, then pinned swapfile will locates fully filled section which
may not affected by GC.

However, for the case that swapfile's size is not aligned to section
size, it will still leave last extent in file's tail as unaligned due
to its size is smaller than section size, like case #2.

case #1
xfs_io -f /mnt/f2fs/file -c "pwrite 0 4M" -c "fsync"

Before swapon:
 EXT: FILE-OFFSET      BLOCK-RANGE      TOTAL FLAGS
   0: [0..3047]:       1123352..1126399  3048 0x1000
   1: [3048..7143]:    237568..241663    4096 0x1000
   2: [7144..8191]:    245760..246807    1048 0x1001
After swapon:
 EXT: FILE-OFFSET      BLOCK-RANGE      TOTAL FLAGS
   0: [0..8191]:       249856..258047    8192 0x1001
Kmsg:
F2FS-fs (zram0): Swapfile (2) is not align to section:
1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate(2097152 * n)

case #2
xfs_io -f /mnt/f2fs/file -c "pwrite 0 3M" -c "fsync"

Before swapon:
 EXT: FILE-OFFSET      BLOCK-RANGE      TOTAL FLAGS
   0: [0..3047]:       246808..249855    3048 0x1000
   1: [3048..6143]:    237568..240663    3096 0x1001
After swapon:
 EXT: FILE-OFFSET      BLOCK-RANGE      TOTAL FLAGS
   0: [0..4095]:       258048..262143    4096 0x1000
   1: [4096..6143]:    238616..240663    2048 0x1001
Kmsg:
F2FS-fs (zram0): Swapfile: last extent is not aligned to section
F2FS-fs (zram0): Swapfile (2) is not align to section:
1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate(2097152 * n)

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

f2fs: swap: remove dead codes

2021-06-23T08:09:35+00:00

After commit af4b6b8edf6a ("f2fs: introduce check_swap_activate_fast()"),
we will never run into original logic of check_swap_activate() before
f2fs supports non 4k-sized page, so let's delete those dead codes.

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

f2fs: compress: add compress_inode to cache compressed blocks

2021-06-23T08:09:35+00:00

Support to use address space of inner inode to cache compressed block,
in order to improve cache hit ratio of random read.

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

f2fs: clean up /sys/fs/f2fs//features

2021-06-23T08:09:35+00:00

Let's create /sys/fs/f2fs//feature_list/ to meet sysfs rule.

Note that there are three feature list entries:
1) /sys/fs/f2fs/features
  : shows runtime features supported by in-kernel f2fs along with Kconfig.
    - ref. F2FS_FEATURE_RO_ATTR()

2) /sys/fs/f2fs/$s_id/features 
  : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
    won't add new feature anymore, and thus, users should check entries in 3)
    instead of this 2).

3) /sys/fs/f2fs/$s_id/feature_list
  : shows on-disk features enabled by mkfs.f2fs per instance, which follows
    sysfs entry rule where each entry should expose single value.
    This list covers old feature list provided by 2) and beyond. Therefore,
    please add new on-disk feature in this list only.
    - ref. F2FS_SB_FEATURE_RO_ATTR()

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