Thomas Gleixner f1e67e355c fs/buffer: Make BH_Uptodate_Lock bit_spin_lock a regular spinlock_t ... Bit spinlocks are problematic if PREEMPT_RT is enabled, because they disable preemption, which is undesired for latency reasons and breaks when regular spinlocks are taken within the bit_spinlock locked region because regular spinlocks are converted to 'sleeping spinlocks' on RT. PREEMPT_RT replaced the bit spinlocks with regular spinlocks to avoid this problem. The replacement was done conditionaly at compile time, but Christoph requested to do an unconditional conversion. Jan suggested to move the spinlock into a existing padding hole which avoids a size increase of struct buffer_head on production kernels. As a benefit the lock gains lockdep coverage. [ bigeasy: Remove the wrapper and use always spinlock_t and move it into the padding hole ] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Christoph Hellwig <hch@infradead.org> Link: https://lkml.kernel.org/r/20191118132824.rclhrbujqh4b4g4d@linutronix.de		2020-03-28 13:21:08 +01:00
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aops.c	fs/buffer: Make BH_Uptodate_Lock bit_spin_lock a regular spinlock_t	2020-03-28 13:21:08 +01:00
aops.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
attrib.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
attrib.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
bitmap.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
bitmap.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
collate.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
collate.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
compress.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
debug.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
debug.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
dir.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
dir.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
endian.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
file.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
index.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
index.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
inode.c	utimes: Clamp the timestamps in notify_change()	2019-12-08 19:10:50 -05:00
inode.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
layout.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
lcnalloc.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
lcnalloc.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
logfile.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
logfile.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
malloc.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
mft.c	ntfs: remove (un)?likely() from IS_ERR() conditions	2019-09-26 10:10:44 -07:00
mft.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
mst.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
namei.c	ntfs: remove (un)?likely() from IS_ERR() conditions	2019-09-26 10:10:44 -07:00
ntfs.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
quota.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
quota.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
runlist.c	ntfs: remove (un)?likely() from IS_ERR() conditions	2019-09-26 10:10:44 -07:00
runlist.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
super.c	ntfs: remove (un)?likely() from IS_ERR() conditions	2019-09-26 10:10:44 -07:00
sysctl.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
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unistr.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
upcase.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 97	2019-05-24 17:37:53 +02:00
usnjrnl.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
usnjrnl.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00
volume.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 96	2019-05-24 17:37:53 +02:00