[PATCH 0/2] Update btrfs Kconfig

[PATCH 0/2] Update btrfs Kconfig

[David Sterba]

Update outdated information, expand option descriptions.

David Sterba (2):
  btrfs: update list of features built under experimental config
  btrfs: update Kconfig option descriptions

 fs/btrfs/Kconfig | 32 ++++++++++++++++++++++----------
 1 file changed, 22 insertions(+), 10 deletions(-)

-- 
2.49.0

[PATCH 1/2] btrfs: update list of features built under experimental config

[David Sterba]

The list is out of date, the extent shrinker got fixed in 6.13. Add new
entries: the COW fixup warning in 6.15, rund robin policies in 6.14.

Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/Kconfig | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index 98fa7650a1c20f..d3e85b373344e0 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -90,7 +90,14 @@ config BTRFS_EXPERIMENTAL
 
 	  Current list:
 
-	  - extent map shrinker - performance problems with too frequent shrinks
+	  - COW fixup worker warning - last warning before removing the
+				       functionality catching out-of-band page
+				       dirtying, not necessary since 5.8
+
+	  - RAID mirror read policy - additional read policies for balancing
+				      reading from redundant block group
+				      profiles (currently: pid, round-robin,
+				      fixed devid)
 
 	  - send stream protocol v3 - fs-verity support
 
-- 
2.49.0

[PATCH 2/2] btrfs: update Kconfig option descriptions

[David Sterba]

Expand what the options do and if they are OK to be enabled.

Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/Kconfig | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index d3e85b373344e0..3a4112a3bea2ea 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -53,10 +53,10 @@ config BTRFS_FS_RUN_SANITY_TESTS
 	bool "Btrfs will run sanity tests upon loading"
 	depends on BTRFS_FS
 	help
-	  This will run some basic sanity tests on the free space cache
-	  code to make sure it is acting as it should.  These are mostly
-	  regression tests and are only really interesting to btrfs
-	  developers.
+	  This will run sanity tests for core functionality like free space,
+	  extent maps, extent io, extent buffers, inodes, qgroups and others,
+	  at module load time.  These are mostly regression tests and are only
+	  interesting to developers.
 
 	  If unsure, say N.
 
@@ -64,9 +64,12 @@ config BTRFS_DEBUG
 	bool "Btrfs debugging support"
 	depends on BTRFS_FS
 	help
-	  Enable run-time debugging support for the btrfs filesystem. This may
-	  enable additional and expensive checks with negative impact on
-	  performance, or export extra information via sysfs.
+	  Enable run-time debugging support for the btrfs filesystem.
+
+	  Additional potentially expensive checks, debugging functionality or
+	  sysfs exported information is enabled, like leak checks of internal
+	  objects, optional forced space fragmentation and /sys/fs/btrfs/debug .
+	  This has negative impact on performance.
 
 	  If unsure, say N.
 
@@ -74,8 +77,10 @@ config BTRFS_ASSERT
 	bool "Btrfs assert support"
 	depends on BTRFS_FS
 	help
-	  Enable run-time assertion checking.  This will result in panics if
-	  any of the assertions trip.  This is meant for btrfs developers only.
+	  Enable run-time assertion checking. Additional safety checks are
+	  done, simple enough not to affect performance but verify invariants
+	  and assumptions of code to run properly. This may result in panics,
+	  and is meant for developers but can be enabled in general.
 
 	  If unsure, say N.
 
-- 
2.49.0