diff options
Diffstat (limited to 'debian/patches-rt/0067-fs-jbd-jbd2-Make-state-lock-and-journal-head-lock-rt.patch')
| -rw-r--r-- | debian/patches-rt/0067-fs-jbd-jbd2-Make-state-lock-and-journal-head-lock-rt.patch | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/debian/patches-rt/0067-fs-jbd-jbd2-Make-state-lock-and-journal-head-lock-rt.patch b/debian/patches-rt/0067-fs-jbd-jbd2-Make-state-lock-and-journal-head-lock-rt.patch new file mode 100644 index 000000000..46bb6aca2 --- /dev/null +++ b/debian/patches-rt/0067-fs-jbd-jbd2-Make-state-lock-and-journal-head-lock-rt.patch @@ -0,0 +1,110 @@ +From 18cc82093eb65f5fc2db7ff78b49fd443c52da5c Mon Sep 17 00:00:00 2001 +From: Thomas Gleixner <tglx@linutronix.de> +Date: Fri, 18 Mar 2011 10:11:25 +0100 +Subject: [PATCH 067/347] fs: jbd/jbd2: Make state lock and journal head lock + rt safe +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +bit_spin_locks break under RT. + +Based on a previous patch from Steven Rostedt <rostedt@goodmis.org> +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +-- + include/linux/buffer_head.h | 8 ++++++++ + include/linux/jbd2.h | 24 ++++++++++++++++++++++++ + 2 files changed, 32 insertions(+) +--- + include/linux/buffer_head.h | 8 ++++++++ + include/linux/jbd2.h | 24 ++++++++++++++++++++++++ + 2 files changed, 32 insertions(+) + +diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h +index 572541d6cc90..703bf3335a3d 100644 +--- a/include/linux/buffer_head.h ++++ b/include/linux/buffer_head.h +@@ -78,6 +78,10 @@ struct buffer_head { + atomic_t b_count; /* users using this buffer_head */ + #ifdef CONFIG_PREEMPT_RT_BASE + spinlock_t b_uptodate_lock; ++#if IS_ENABLED(CONFIG_JBD2) ++ spinlock_t b_state_lock; ++ spinlock_t b_journal_head_lock; ++#endif + #endif + }; + +@@ -109,6 +113,10 @@ static inline void buffer_head_init_locks(struct buffer_head *bh) + { + #ifdef CONFIG_PREEMPT_RT_BASE + spin_lock_init(&bh->b_uptodate_lock); ++#if IS_ENABLED(CONFIG_JBD2) ++ spin_lock_init(&bh->b_state_lock); ++ spin_lock_init(&bh->b_journal_head_lock); ++#endif + #endif + } + +diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h +index 268f3000d1b3..8f5d6ecb802e 100644 +--- a/include/linux/jbd2.h ++++ b/include/linux/jbd2.h +@@ -347,32 +347,56 @@ static inline struct journal_head *bh2jh(struct buffer_head *bh) + + static inline void jbd_lock_bh_state(struct buffer_head *bh) + { ++#ifndef CONFIG_PREEMPT_RT_BASE + bit_spin_lock(BH_State, &bh->b_state); ++#else ++ spin_lock(&bh->b_state_lock); ++#endif + } + + static inline int jbd_trylock_bh_state(struct buffer_head *bh) + { ++#ifndef CONFIG_PREEMPT_RT_BASE + return bit_spin_trylock(BH_State, &bh->b_state); ++#else ++ return spin_trylock(&bh->b_state_lock); ++#endif + } + + static inline int jbd_is_locked_bh_state(struct buffer_head *bh) + { ++#ifndef CONFIG_PREEMPT_RT_BASE + return bit_spin_is_locked(BH_State, &bh->b_state); ++#else ++ return spin_is_locked(&bh->b_state_lock); ++#endif + } + + static inline void jbd_unlock_bh_state(struct buffer_head *bh) + { ++#ifndef CONFIG_PREEMPT_RT_BASE + bit_spin_unlock(BH_State, &bh->b_state); ++#else ++ spin_unlock(&bh->b_state_lock); ++#endif + } + + static inline void jbd_lock_bh_journal_head(struct buffer_head *bh) + { ++#ifndef CONFIG_PREEMPT_RT_BASE + bit_spin_lock(BH_JournalHead, &bh->b_state); ++#else ++ spin_lock(&bh->b_journal_head_lock); ++#endif + } + + static inline void jbd_unlock_bh_journal_head(struct buffer_head *bh) + { ++#ifndef CONFIG_PREEMPT_RT_BASE + bit_spin_unlock(BH_JournalHead, &bh->b_state); ++#else ++ spin_unlock(&bh->b_journal_head_lock); ++#endif + } + + #define J_ASSERT(assert) BUG_ON(!(assert)) +-- +2.36.1 + |