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262c5e86fe
linux/fs/btrfs
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Petr Mladek 262c5e86fe printk/btrfs: handle more message headers 
Commit 4bcc595ccd ("printk: reinstate KERN_CONT for printing
continuation lines") allows to define more message headers for a single
message.  The motivation is that continuous lines might get mixed.
Therefore it make sense to define the right log level for every piece of
a cont line.

The current btrfs_printk() macros do not support continuous lines at the
moment.  But better be prepared for a custom messages and avoid
potential "lvl" buffer overflow.

This patch iterates over the entire message header.  It is interested
only into the message level like the original code.

This patch also introduces PRINTK_MAX_SINGLE_HEADER_LEN.  Three bytes
are enough for the message level header at the moment.  But it used to
be three, see the commit 04d2c8c83d ("printk: convert the format for
KERN_<LEVEL> to a 2 byte pattern").

Also I fixed the default ratelimit level.  It looked very strange when it
was different from the default log level.

[pmladek@suse.com: Fix a check of the valid message level]
  Link: http://lkml.kernel.org/r/20161111183236.GD2145@dhcp128.suse.cz
Link: http://lkml.kernel.org/r/1478695291-12169-4-git-send-email-pmladek@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Acked-by: David Sterba <dsterba@suse.com>
Cc: Joe Perches <joe@perches.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:09 -08:00
..
tests Merge branch 'fst-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.9 2016-10-12 13:16:00 -07:00
acl.c posix_acl: Clear SGID bit when setting file permissions 2016-09-22 10:55:32 +02:00
async-thread.c btrfs: plumb fs_info into btrfs_work 2016-07-26 13:53:15 +02:00
async-thread.h btrfs: plumb fs_info into btrfs_work 2016-07-26 13:53:15 +02:00
backref.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
backref.h
btrfs_inode.h Btrfs: add a flags field to btrfs_fs_info 2016-09-26 17:59:49 +02:00
check-integrity.c btrfs: convert printk(KERN_* to use pr_* calls 2016-09-26 18:08:44 +02:00
check-integrity.h fs: have submit_bh users pass in op and flags separately 2016-06-07 13:41:38 -06:00
compression.c btrfs: assign error values to the correct bio structs 2016-10-17 14:16:14 -07:00
compression.h btrfs: move btrfs_compression_type to compression.h 2016-03-11 17:12:46 +01:00
ctree.c Btrfs: remove unnecessary btrfs_mark_buffer_dirty in split_leaf 2016-09-26 19:50:44 +02:00
ctree.h Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2016-10-14 17:44:56 -07:00
dedupe.h btrfs: expand cow_file_range() to support in-band dedup and subpage-blocksize 2016-07-26 13:52:25 +02:00
delayed-inode.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
delayed-inode.h Btrfs: fix ->iterate_shared() by upgrading i_rwsem for delayed nodes 2016-06-25 06:20:10 -07:00
delayed-ref.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
delayed-ref.h Btrfs: remove unused function btrfs_add_delayed_qgroup_reserve() 2016-08-03 11:02:51 +01:00
dev-replace.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
dev-replace.h btrfs: refactor btrfs_dev_replace_start for reuse 2016-04-28 10:59:13 +02:00
dir-item.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
disk-io.c Merge branch 'fst-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.9 2016-10-12 13:16:00 -07:00
disk-io.h Btrfs: fix memory leak of block group cache 2016-09-26 17:59:49 +02:00
export.c BTRFS: support NFSv2 export 2015-10-06 06:55:23 -07:00
export.h
extent_io.c Btrfs: remove some no-op casts 2016-10-24 18:20:29 +02:00
extent_io.h Merge branch 'fst-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.9 2016-10-12 13:16:00 -07:00
extent_map.c btrfs: Fix slab accounting flags 2016-07-26 13:52:25 +02:00
extent_map.h btrfs: cleanup, stop casting for extent_map->lookup everywhere 2016-01-15 19:22:28 +01:00
extent-tree.c btrfs: fix WARNING in btrfs_select_ref_head() 2016-10-24 18:20:29 +02:00
file-item.c Btrfs: fix __MAX_CSUM_ITEMS 2016-08-03 14:08:37 -07:00
file.c Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2016-10-11 11:23:06 -07:00
free-space-cache.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
free-space-cache.h btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
free-space-tree.c Merge branch 'fst-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.9 2016-10-12 13:16:00 -07:00
free-space-tree.h Btrfs: implement the free space B-tree 2015-12-17 12:16:47 -08:00
hash.c btrfs: advertise which crc32c implementation is being used at module load 2016-06-06 14:08:28 +02:00
hash.h btrfs: advertise which crc32c implementation is being used at module load 2016-06-06 14:08:28 +02:00
inode-item.c btrfs: rename btrfs_std_error to btrfs_handle_fs_error 2016-04-28 10:36:54 +02:00
inode-map.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
inode-map.h Btrfs: Initialize btrfs_root->highest_objectid when loading tree root and subvolume roots 2016-01-15 19:25:02 +01:00
inode.c Merge branch 'for-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2016-11-04 20:08:16 -07:00
ioctl.c Merge branch 'for-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2016-11-04 20:08:16 -07:00
Kconfig
locking.c btrfs: cleanup, remove stray return statements 2016-01-07 14:30:52 +01:00
locking.h
lzo.c btrfs: convert printk(KERN_* to use pr_* calls 2016-09-26 18:08:44 +02:00
Makefile Btrfs: add free space tree sanity tests 2015-12-17 12:16:47 -08:00
math.h
ordered-data.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
ordered-data.h Btrfs: fix race setting block group readonly during device replace 2016-05-30 12:58:21 +01:00
orphan.c
print-tree.c btrfs: convert printk(KERN_* to use pr_* calls 2016-09-26 18:08:44 +02:00
print-tree.h
props.c btrfs: simpilify btrfs_subvol_inherit_props 2016-07-26 13:54:22 +02:00
props.h
qgroup.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
qgroup.h btrfs: qgroup: Refactor btrfs_qgroup_insert_dirty_extent() 2016-08-25 03:58:21 -07:00
raid56.c Btrfs: remove BUG() in raid56 2016-09-26 17:59:49 +02:00
raid56.h
rcu-string.h
reada.c btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
relocation.c Btrfs: kill BUG_ON in do_relocation 2016-10-17 15:48:40 +02:00
root-tree.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
scrub.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
send.c Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2016-10-28 10:07:35 -07:00
send.h Btrfs: use linux/sizes.h to represent constants 2016-01-07 14:38:02 +01:00
struct-funcs.c btrfs: fix string and comment grammatical issues and typos 2016-05-25 22:35:14 +02:00
super.c printk/btrfs: handle more message headers 2016-12-12 18:55:09 -08:00
sysfs.c btrfs: convert printk(KERN_* to use pr_* calls 2016-09-26 18:08:44 +02:00
sysfs.h btrfs: sysfs: introduce helper for syncing bits with sysfs files 2016-01-21 18:50:40 +01:00
transaction.c Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2016-10-11 11:23:06 -07:00
transaction.h btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
tree-defrag.c Btrfs: fix locking bugs when defragging leaves 2015-12-18 02:51:32 +00:00
tree-log.c Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2016-10-28 10:07:35 -07:00
tree-log.h Btrfs: fix lockdep warning on deadlock against an inode's log mutex 2016-08-25 03:58:32 -07:00
ulist.c btrfs: fix string and comment grammatical issues and typos 2016-05-25 22:35:14 +02:00
ulist.h
uuid-tree.c btrfs: unsplit printed strings 2016-09-26 18:08:44 +02:00
volumes.c Revert "btrfs: let btrfs_delete_unused_bgs() to clean relocated bgs" 2016-10-10 13:43:31 -07:00
volumes.h btrfs: convert pr_* to btrfs_* where possible 2016-09-26 19:37:04 +02:00
xattr.c fs: Replace current_fs_time() with current_time() 2016-09-27 21:06:22 -04:00
xattr.h btrfs: Switch to generic xattr handlers 2016-05-17 19:17:09 -04:00
zlib.c btrfs: convert printk(KERN_* to use pr_* calls 2016-09-26 18:08:44 +02:00