xfs: prevent close() from hanging on frozen filesystems

When a file is closed, xfs_file_release() attempts to trim speculative
post-EOF blocks. This requires allocating a transaction, which blocks
indefinitely if the filesystem is frozen.

Fix the hang by wrapping the preallocation cleanup block with
sb_start_write_trylock() and xfs_ilock_nowait() to bypass the trim
best-effort when the filesystem is frozen or locking fails.

Suggested-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Aditya Prakash Srivastava <aditya.ansh182@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

0 files changed, 0 insertions, 0 deletions