https://bugzilla.kernel.org/show_bug.cgi?id=214299
Bug ID: 214299
Summary: A deadlock problem caused by the quota_sem set in
db6ec53b7e0
Product: File System
Version: 2.5
Kernel Version: 5.3.0
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: f2fs
Assignee: [email protected]
Reporter: [email protected]
Regression: No
thread 1: thread 2:
f2fs_dquot_acquire
down_read(&sbi->quota_sem)
f2fs_write_checkpoint
block_operations
f2fs_look_all
down_write(&sbi->cp_rwsem)
f2fs_quota_write
f2fs_write_begin
__do_map_lock
f2fs_lock_op
down_read(&sbi->cp_rwsem)
__need_flush_qutoa
down_write(&sbi->quota_sem)
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