[PATCH V3 RESEND] SYSV: logging update
From: Fabian Frederick
Date: Sat Sep 13 2014 - 17:13:00 EST
-use current logging functions
-replace no level printk by pr_err
-add debug.c / sysv_err function to include sb->s_id
-use pr_fmt with standard KBUILD_MODNAME ": "
-use __builtin_return_address to display function name
logging format is now:
sysv: (sb->s_id) sysv_fill_super [sysv]: msg
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Joe Perches <joe@xxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
---
V3:
Suggestions by Joe Perches:
-use builtin function(0) instead of __func__
-use const sb in sysv_err
-use standard KBUILD_MODNAME ": " fmt
-remove \n from sysv_err
V2: add sb->s_id in logging (suggested by Christoph Hellwig)
fs/sysv/Makefile | 2 +-
fs/sysv/balloc.c | 24 +++++++++++-------------
fs/sysv/debug.c | 15 +++++++++++++++
fs/sysv/ialloc.c | 12 +++++-------
fs/sysv/inode.c | 15 ++++++---------
fs/sysv/itree.c | 2 +-
fs/sysv/super.c | 28 +++++++++++-----------------
fs/sysv/sysv.h | 3 +++
8 files changed, 53 insertions(+), 48 deletions(-)
create mode 100644 fs/sysv/debug.c
diff --git a/fs/sysv/Makefile b/fs/sysv/Makefile
index 3591f9d..46721fb 100644
--- a/fs/sysv/Makefile
+++ b/fs/sysv/Makefile
@@ -5,4 +5,4 @@
obj-$(CONFIG_SYSV_FS) += sysv.o
sysv-objs := ialloc.o balloc.o inode.o itree.o file.o dir.o \
- namei.o super.o symlink.o
+ namei.o super.o symlink.o debug.o
diff --git a/fs/sysv/balloc.c b/fs/sysv/balloc.c
index 921c053..3473fb9 100644
--- a/fs/sysv/balloc.c
+++ b/fs/sysv/balloc.c
@@ -56,7 +56,7 @@ void sysv_free_block(struct super_block * sb, sysv_zone_t nr)
return;
if (block < sbi->s_firstdatazone || block >= sbi->s_nzones) {
- printk("sysv_free_block: trying to free block not in datazone\n");
+ sysv_err(sb, "trying to free block not in datazone\n");
return;
}
@@ -64,7 +64,7 @@ void sysv_free_block(struct super_block * sb, sysv_zone_t nr)
count = fs16_to_cpu(sbi, *sbi->s_bcache_count);
if (count > sbi->s_flc_size) {
- printk("sysv_free_block: flc_count > flc_size\n");
+ sysv_err(sb, "flc_count > flc_size\n");
mutex_unlock(&sbi->s_lock);
return;
}
@@ -76,7 +76,7 @@ void sysv_free_block(struct super_block * sb, sysv_zone_t nr)
block += sbi->s_block_base;
bh = sb_getblk(sb, block);
if (!bh) {
- printk("sysv_free_block: getblk() failed\n");
+ sysv_err(sb, "getblk() failed\n");
mutex_unlock(&sbi->s_lock);
return;
}
@@ -118,8 +118,7 @@ sysv_zone_t sysv_new_block(struct super_block * sb)
*sbi->s_bcache_count = cpu_to_fs16(sbi, count);
if (block < sbi->s_firstdatazone || block >= sbi->s_nzones) {
- printk("sysv_new_block: new block %d is not in data zone\n",
- block);
+ sysv_err(sb, "new block %d is not in data zone\n", block);
goto Enospc;
}
@@ -128,14 +127,14 @@ sysv_zone_t sysv_new_block(struct super_block * sb)
block += sbi->s_block_base;
if (!(bh = sb_bread(sb, block))) {
- printk("sysv_new_block: cannot read free-list block\n");
+ sysv_err(sb, "cannot read free-list block\n");
/* retry this same block next time */
*sbi->s_bcache_count = cpu_to_fs16(sbi, 1);
goto Enospc;
}
count = fs16_to_cpu(sbi, *(__fs16*)bh->b_data);
if (count > sbi->s_flc_size) {
- printk("sysv_new_block: free-list block with >flc_size entries\n");
+ sysv_err(sb, "free-list block with >flc_size entries\n");
brelse(bh);
goto Enospc;
}
@@ -215,22 +214,21 @@ done:
return count;
Einval:
- printk("sysv_count_free_blocks: new block %d is not in data zone\n",
- block);
+ sysv_err(sb, "new block %d is not in data zone\n", block);
goto trust_sb;
Eio:
- printk("sysv_count_free_blocks: cannot read free-list block\n");
+ sysv_err(sb, "cannot read free-list block\n");
goto trust_sb;
E2big:
- printk("sysv_count_free_blocks: >flc_size entries in free-list block\n");
+ sysv_err(sb, ">flc_size entries in free-list block\n");
if (bh)
brelse(bh);
trust_sb:
count = sb_count;
goto done;
Ecount:
- printk("sysv_count_free_blocks: free block count was %d, "
- "correcting to %d\n", sb_count, count);
+ sysv_err(sb, "free block count was %d, correcting to %d\n",
+ sb_count, count);
if (!(sb->s_flags & MS_RDONLY)) {
*sbi->s_free_blocks = cpu_to_fs32(sbi, count);
dirty_sb(sb);
diff --git a/fs/sysv/debug.c b/fs/sysv/debug.c
new file mode 100644
index 0000000..187fbd6
--- /dev/null
+++ b/fs/sysv/debug.c
@@ -0,0 +1,15 @@
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include "sysv.h"
+
+void sysv_err(const struct super_block *sb, const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ pr_err("(%s) %pf: %pV", sb->s_id, __builtin_return_address(0), &vaf);
+ va_end(args);
+}
diff --git a/fs/sysv/ialloc.c b/fs/sysv/ialloc.c
index f9db4eb..18e8d32 100644
--- a/fs/sysv/ialloc.c
+++ b/fs/sysv/ialloc.c
@@ -109,13 +109,12 @@ void sysv_free_inode(struct inode * inode)
sb = inode->i_sb;
ino = inode->i_ino;
if (ino <= SYSV_ROOT_INO || ino > sbi->s_ninodes) {
- printk("sysv_free_inode: inode 0,1,2 or nonexistent inode\n");
+ sysv_err(sb, "inode 0,1,2 or nonexistent inode\n");
return;
}
raw_inode = sysv_raw_inode(sb, ino, &bh);
if (!raw_inode) {
- printk("sysv_free_inode: unable to read inode block on device "
- "%s\n", inode->i_sb->s_id);
+ sysv_err(sb, "unable to read inode block on device\n");
return;
}
mutex_lock(&sbi->s_lock);
@@ -217,9 +216,8 @@ out:
return count;
Einval:
- printk("sysv_count_free_inodes: "
- "free inode count was %d, correcting to %d\n",
- sb_count, count);
+ sysv_err(sb, "free inode count was %d, correcting to %d\n",
+ sb_count, count);
if (!(sb->s_flags & MS_RDONLY)) {
*sbi->s_sb_total_free_inodes = cpu_to_fs16(SYSV_SB(sb), count);
dirty_sb(sb);
@@ -227,7 +225,7 @@ Einval:
goto out;
Eio:
- printk("sysv_count_free_inodes: unable to read inode table\n");
+ sysv_err(sb, "unable to read inode table\n");
trust_sb:
count = sb_count;
goto out;
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index 8895630..2d0644f 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -184,8 +184,7 @@ struct inode *sysv_iget(struct super_block *sb, unsigned int ino)
unsigned int block;
if (!ino || ino > sbi->s_ninodes) {
- printk("Bad inode number on dev %s: %d is out of range\n",
- sb->s_id, ino);
+ sysv_err(sb, "Bad inode number %d is out of range\n", ino);
return ERR_PTR(-EIO);
}
@@ -197,8 +196,7 @@ struct inode *sysv_iget(struct super_block *sb, unsigned int ino)
raw_inode = sysv_raw_inode(sb, ino, &bh);
if (!raw_inode) {
- printk("Major problem: unable to read inode from dev %s\n",
- inode->i_sb->s_id);
+ sysv_err(sb, "Major problem: unable to read inode from dev\n");
goto bad_inode;
}
/* SystemV FS: kludge permissions if ino==SYSV_ROOT_INO ?? */
@@ -246,13 +244,12 @@ static int __sysv_write_inode(struct inode *inode, int wait)
ino = inode->i_ino;
if (!ino || ino > sbi->s_ninodes) {
- printk("Bad inode number on dev %s: %d is out of range\n",
- inode->i_sb->s_id, ino);
+ sysv_err(sb, "Bad inode number %d is out of range\n", ino);
return -EIO;
}
raw_inode = sysv_raw_inode(sb, ino, &bh);
if (!raw_inode) {
- printk("unable to read i-node block\n");
+ sysv_err(sb, "unable to read i-node block\n");
return -EIO;
}
@@ -275,8 +272,8 @@ static int __sysv_write_inode(struct inode *inode, int wait)
if (wait) {
sync_dirty_buffer(bh);
if (buffer_req(bh) && !buffer_uptodate(bh)) {
- printk ("IO error syncing sysv inode [%s:%08x]\n",
- sb->s_id, ino);
+ sysv_err(sb, "IO error syncing sysv inode [%s:%08x]\n",
+ sb->s_id, ino);
err = -EIO;
}
}
diff --git a/fs/sysv/itree.c b/fs/sysv/itree.c
index 66bc316..9c78f4c 100644
--- a/fs/sysv/itree.c
+++ b/fs/sysv/itree.c
@@ -29,7 +29,7 @@ static int block_to_path(struct inode *inode, long block, int offsets[DEPTH])
int n = 0;
if (block < 0) {
- printk("sysv_block_map: block < 0\n");
+ sysv_err(sb, "block < 0\n");
} else if (block < DIRECT) {
offsets[n++] = block;
} else if ( (block -= DIRECT) < indirect_blocks) {
diff --git a/fs/sysv/super.c b/fs/sysv/super.c
index eda1095..7b667c0 100644
--- a/fs/sysv/super.c
+++ b/fs/sysv/super.c
@@ -217,9 +217,7 @@ static int detect_sysv(struct sysv_sb_info *sbi, struct buffer_head *bh)
sbi->s_type = FSTYPE_AFS;
sbi->s_forced_ro = 1;
if (!(sb->s_flags & MS_RDONLY)) {
- printk("SysV FS: SCO EAFS on %s detected, "
- "forcing read-only mode.\n",
- sb->s_id);
+ sysv_err(sb, "SCO EAFS detected, forcing read-only mode.\n");
}
return type;
}
@@ -240,8 +238,7 @@ static int detect_sysv(struct sysv_sb_info *sbi, struct buffer_head *bh)
feature read-only mode seems to be a reasonable approach... -KGB */
if (type >= 0x10) {
- printk("SysV FS: can't handle long file names on %s, "
- "forcing read-only mode.\n", sb->s_id);
+ sysv_err(sb, "can't handle long file names, forcing read-only mode.\n");
sbi->s_forced_ro = 1;
}
@@ -326,8 +323,8 @@ static int complete_read_super(struct super_block *sb, int silent, int size)
<< sbi->s_inodes_per_block_bits;
if (!silent)
- printk("VFS: Found a %s FS (block size = %ld) on device %s\n",
- found, sb->s_blocksize, sb->s_id);
+ sysv_err(sb, "VFS: Found a %s FS (block size = %ld) on device\n",
+ found, sb->s_blocksize);
sb->s_magic = SYSV_MAGIC_BASE + sbi->s_type;
/* set up enough so that it can read an inode */
@@ -338,12 +335,12 @@ static int complete_read_super(struct super_block *sb, int silent, int size)
sb->s_d_op = &sysv_dentry_operations;
root_inode = sysv_iget(sb, SYSV_ROOT_INO);
if (IS_ERR(root_inode)) {
- printk("SysV FS: get root inode failed\n");
+ sysv_err(sb, "get root inode failed\n");
return 0;
}
sb->s_root = d_make_root(root_inode);
if (!sb->s_root) {
- printk("SysV FS: get root dentry failed\n");
+ sysv_err(sb, "get root dentry failed\n");
return 0;
}
return 1;
@@ -415,7 +412,7 @@ static int sysv_fill_super(struct super_block *sb, void *data, int silent)
brelse(bh1);
brelse(bh);
sb_set_blocksize(sb, BLOCK_SIZE);
- printk("oldfs: cannot read superblock\n");
+ sysv_err(sb, "oldfs: cannot read superblock\n");
failed:
kfree(sbi);
return -EINVAL;
@@ -423,13 +420,12 @@ failed:
Eunknown:
brelse(bh);
if (!silent)
- printk("VFS: unable to find oldfs superblock on device %s\n",
- sb->s_id);
+ sysv_err(sb, "VFS: unable to find oldfs superblock on device\n");
goto failed;
Ebadsize:
brelse(bh);
if (!silent)
- printk("VFS: oldfs: unsupported block size (%dKb)\n",
+ sysv_err(sb, "VFS: oldfs: unsupported block size (%dKb)\n",
1<<(size-2));
goto failed;
}
@@ -494,8 +490,7 @@ static int v7_fill_super(struct super_block *sb, void *data, int silent)
if ((bh = sb_bread(sb, 1)) == NULL) {
if (!silent)
- printk("VFS: unable to read V7 FS superblock on "
- "device %s.\n", sb->s_id);
+ sysv_err(sb, "VFS: unable to read V7 FS superblock on device\n");
goto failed;
}
@@ -518,8 +513,7 @@ detected:
return 0;
failed:
- printk(KERN_ERR "VFS: could not find a valid V7 on %s.\n",
- sb->s_id);
+ sysv_err(sb, "VFS: could not find a valid V7\n");
brelse(bh);
kfree(sbi);
return -EINVAL;
diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index 69d4889..04d2231 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -120,6 +120,9 @@ static inline void dirty_sb(struct super_block *sb)
mark_buffer_dirty(sbi->s_bh2);
}
+/* debug.c */
+extern __printf(2, 3)
+void sysv_err(const struct super_block *, const char *, ...);
/* ialloc.c */
extern struct sysv_inode *sysv_raw_inode(struct super_block *, unsigned,
--
1.8.4.5
--
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