f2fs: fix iostat lock protection
Made iostat lock irq safe to avoid potentinal deadlock. Deadlock scenario: f2fs_attr_store -> f2fs_sbi_store -> _sbi_store -> spin_lock(sbi->iostat_lock) <interrupt request> -> scsi_end_request -> bio_endio -> f2fs_dio_read_end_io -> f2fs_update_iostat -> spin_lock_irqsave(sbi->iostat_lock) ===> Dead lock here Fixes: 61803e98 ("f2fs: fix iostat related lock protection") Fixes: a1e09b03 ("f2fs: use iomap for direct I/O") Signed-off-by:Qilin Tan <qilin.tan@mediatek.com> Reviewed-by:
Chao Yu <chao@kernel.org> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
parent
f26aaee6