[GIT PULL] erofs fixes for 6.8-rc3

[Gao Xiang]

Hi Linus,

Could you consider these fixes for 6.8-rc3?

One commit fixes an infinite loop issue of sub-page compressed data
support found with lengthy stress tests on a 64k-page arm64 VM.

Another one optimizes temporary buffer allocation for low-memory
scenarios, which can reduce 20.21% on average under a heavy multi-app
launch benchmark workload.

The remaining one gets rid of unnecessary GFP_NOFS.

All commits have been in -next for a while and no potential merge
conflict is observed.

Thanks,
Gao Xiang

The following changes since commit 6613476e225e090cc9aad49be7fa504e290dd33d:

  Linux 6.8-rc1 (2024-01-21 14:11:32 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git tags/erofs-for-6.8-rc3-fixes

for you to fetch changes up to d9281660ff3ffb4a05302b485cc59a87e709aefc:

  erofs: relaxed temporary buffers allocation on readahead (2024-01-27 12:28:08 +0800)

----------------------------------------------------------------
Changes since last update:

 - Fix infinite loops due to filling compressed_bvecs non-atomically;

 - Remove unnecessary GFP_NOFS;

 - Relax temporary buffer allocation for low-memory scenarios.

----------------------------------------------------------------
Chunhai Guo (1):
      erofs: relaxed temporary buffers allocation on readahead

Gao Xiang (1):
      erofs: fix infinite loop due to a race of filling compressed_bvecs

Jingbo Xu (1):
      erofs: get rid of unneeded GFP_NOFS

 fs/erofs/compress.h             |  5 +--
 fs/erofs/decompressor.c         |  5 ++-
 fs/erofs/decompressor_deflate.c | 19 +++++---
 fs/erofs/decompressor_lzma.c    | 17 ++++---
 fs/erofs/fscache.c              |  2 +-
 fs/erofs/inode.c                |  2 +-
 fs/erofs/utils.c                |  2 +-
 fs/erofs/zdata.c                | 98 +++++++++++++++++++++++------------------
 8 files changed, 87 insertions(+), 63 deletions(-)