Merge branch 'akpm' (patches from Andrew)
Merge commit. Changes below are compared with the first parent: 9cd77374.
Changes
43 files changed · +1185 −238
Only the first 600 diff lines are shown. Download the complete patch.
.gitignore
View filediff --git a/.gitignore b/.gitignore
index 9ac9106..acb6afe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,6 +43,7 @@ Module.symvers
/TAGS
/linux
/vmlinux
+/vmlinux-gdb.py
/vmlinuz
/System.map
/Module.markers
Documentation/gdb-kernel-debugging.txt
View filediff --git a/Documentation/gdb-kernel-debugging.txt b/Documentation/gdb-kernel-debugging.txt
new file mode 100644
index 0000000..7050ce8
--- /dev/null
+++ b/Documentation/gdb-kernel-debugging.txt
@@ -0,0 +1,160 @@
+Debugging kernel and modules via gdb
+====================================
+
+The kernel debugger kgdb, hypervisors like QEMU or JTAG-based hardware
+interfaces allow to debug the Linux kernel and its modules during runtime
+using gdb. Gdb comes with a powerful scripting interface for python. The
+kernel provides a collection of helper scripts that can simplify typical
+kernel debugging steps. This is a short tutorial about how to enable and use
+them. It focuses on QEMU/KVM virtual machines as target, but the examples can
+be transferred to the other gdb stubs as well.
+
+
+Requirements
+------------
+
+ o gdb 7.2+ (recommended: 7.4+) with python support enabled (typically true
+ for distributions)
+
+
+Setup
+-----
+
+ o Create a virtual Linux machine for QEMU/KVM (see www.linux-kvm.org and
+ www.qemu.org for more details). For cross-development,
+ http://landley.net/aboriginal/bin keeps a pool of machine images and
+ toolchains that can be helpful to start from.
+
+ o Build the kernel with CONFIG_GDB_SCRIPTS enabled, but leave
+ CONFIG_DEBUG_INFO_REDUCED off. If your architecture supports
+ CONFIG_FRAME_POINTER, keep it enabled.
+
+ o Install that kernel on the guest.
+
+ Alternatively, QEMU allows to boot the kernel directly using -kernel,
+ -append, -initrd command line switches. This is generally only useful if
+ you do not depend on modules. See QEMU documentation for more details on
+ this mode.
+
+ o Enable the gdb stub of QEMU/KVM, either
+ - at VM startup time by appending "-s" to the QEMU command line
+ or
+ - during runtime by issuing "gdbserver" from the QEMU monitor
+ console
+
+ o cd /path/to/linux-build
+
+ o Start gdb: gdb vmlinux
+
+ Note: Some distros may restrict auto-loading of gdb scripts to known safe
+ directories. In case gdb reports to refuse loading vmlinux-gdb.py, add
+
+ add-auto-load-safe-path /path/to/linux-build
+
+ to ~/.gdbinit. See gdb help for more details.
+
+ o Attach to the booted guest:
+ (gdb) target remote :1234
+
+
+Examples of using the Linux-provided gdb helpers
+------------------------------------------------
+
+ o Load module (and main kernel) symbols:
+ (gdb) lx-symbols
+ loading vmlinux
+ scanning for modules in /home/user/linux/build
+ loading @0xffffffffa0020000: /home/user/linux/build/net/netfilter/xt_tcpudp.ko
+ loading @0xffffffffa0016000: /home/user/linux/build/net/netfilter/xt_pkttype.ko
+ loading @0xffffffffa0002000: /home/user/linux/build/net/netfilter/xt_limit.ko
+ loading @0xffffffffa00ca000: /home/user/linux/build/net/packet/af_packet.ko
+ loading @0xffffffffa003c000: /home/user/linux/build/fs/fuse/fuse.ko
+ ...
+ loading @0xffffffffa0000000: /home/user/linux/build/drivers/ata/ata_generic.ko
+
+ o Set a breakpoint on some not yet loaded module function, e.g.:
+ (gdb) b btrfs_init_sysfs
+ Function "btrfs_init_sysfs" not defined.
+ Make breakpoint pending on future shared library load? (y or [n]) y
+ Breakpoint 1 (btrfs_init_sysfs) pending.
+
+ o Continue the target
+ (gdb) c
+
+ o Load the module on the target and watch the symbols being loaded as well as
+ the breakpoint hit:
+ loading @0xffffffffa0034000: /home/user/linux/build/lib/libcrc32c.ko
+ loading @0xffffffffa0050000: /home/user/linux/build/lib/lzo/lzo_compress.ko
+ loading @0xffffffffa006e000: /home/user/linux/build/lib/zlib_deflate/zlib_deflate.ko
+ loading @0xffffffffa01b1000: /home/user/linux/build/fs/btrfs/btrfs.ko
+
+ Breakpoint 1, btrfs_init_sysfs () at /home/user/linux/fs/btrfs/sysfs.c:36
+ 36 btrfs_kset = kset_create_and_add("btrfs", NULL, fs_kobj);
+
+ o Dump the log buffer of the target kernel:
+ (gdb) lx-dmesg
+ [ 0.000000] Initializing cgroup subsys cpuset
+ [ 0.000000] Initializing cgroup subsys cpu
+ [ 0.000000] Linux version 3.8.0-rc4-dbg+ (...
+ [ 0.000000] Command line: root=/dev/sda2 resume=/dev/sda1 vga=0x314
+ [ 0.000000] e820: BIOS-provided physical RAM map:
+ [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
+ [ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
+ ....
+
+ o Examine fields of the current task struct:
+ (gdb) p $lx_current().pid
+ $1 = 4998
+ (gdb) p $lx_current().comm
+ $2 = "modprobe\000\000\000\000\000\000\000"
+
+ o Make use of the per-cpu function for the current or a specified CPU:
+ (gdb) p $lx_per_cpu("runqueues").nr_running
+ $3 = 1
+ (gdb) p $lx_per_cpu("runqueues", 2).nr_running
+ $4 = 0
+
+ o Dig into hrtimers using the container_of helper:
+ (gdb) set $next = $lx_per_cpu("hrtimer_bases").clock_base[0].active.next
+ (gdb) p *$container_of($next, "struct hrtimer", "node")
+ $5 = {
+ node = {
+ node = {
+ __rb_parent_color = 18446612133355256072,
+ rb_right = 0x0 <irq_stack_union>,
+ rb_left = 0x0 <irq_stack_union>
+ },
+ expires = {
+ tv64 = 1835268000000
+ }
+ },
+ _softexpires = {
+ tv64 = 1835268000000
+ },
+ function = 0xffffffff81078232 <tick_sched_timer>,
+ base = 0xffff88003fd0d6f0,
+ state = 1,
+ start_pid = 0,
+ start_site = 0xffffffff81055c1f <hrtimer_start_range_ns+20>,
+ start_comm = "swapper/2\000\000\000\000\000\000"
+ }
+
+
+List of commands and functions
+------------------------------
+
+The number of commands and convenience functions may evolve over the time,
+this is just a snapshot of the initial version:
+
+ (gdb) apropos lx
+ function lx_current -- Return current task
+ function lx_module -- Find module by name and return the module variable
+ function lx_per_cpu -- Return per-cpu variable
+ function lx_task_by_pid -- Find Linux task by PID and return the task_struct variable
+ function lx_thread_info -- Calculate Linux thread_info from task variable
+ lx-dmesg -- Print Linux kernel log buffer
+ lx-lsmod -- List currently loaded modules
+ lx-symbols -- (Re-)load symbols of Linux kernel and currently loaded modules
+
+Detailed help can be obtained via "help <command-name>" for commands and "help
+function <function-name>" for convenience functions.
MAINTAINERS
View filediff --git a/MAINTAINERS b/MAINTAINERS
index 3eee4c7..0597c5b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4232,6 +4232,11 @@ W: http://www.icp-vortex.com/
S: Supported
F: drivers/scsi/gdt*
+GDB KERNEL DEBUGGING HELPER SCRIPTS
+M: Jan Kiszka <[email protected]>
+S: Supported
+F: scripts/gdb/
+
GEMTEK FM RADIO RECEIVER DRIVER
M: Hans Verkuil <[email protected]>
Makefile
View filediff --git a/Makefile b/Makefile
index 33cb15e..dd8796c 100644
--- a/Makefile
+++ b/Makefile
@@ -927,6 +927,9 @@ endif
ifdef CONFIG_BUILD_DOCSRC
$(Q)$(MAKE) $(build)=Documentation
endif
+ifdef CONFIG_GDB_SCRIPTS
+ $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py
+endif
+$(call if_changed,link-vmlinux)
# The actual objects are generated when descending,
@@ -1181,7 +1184,7 @@ MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
signing_key.priv signing_key.x509 x509.genkey \
extra_certificates signing_key.x509.keyid \
- signing_key.x509.signer
+ signing_key.x509.signer vmlinux-gdb.py
# clean - Delete most, but leave enough to build external modules
#
arch/powerpc/kernel/machine_kexec_64.c
View filediff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index f96d1ec..1a74446 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -96,8 +96,6 @@ int default_machine_kexec_prepare(struct kimage *image)
return 0;
}
-#define IND_FLAGS (IND_DESTINATION | IND_INDIRECTION | IND_DONE | IND_SOURCE)
-
static void copy_segments(unsigned long ind)
{
unsigned long entry;
fs/affs/affs.h
View filediff --git a/fs/affs/affs.h b/fs/affs/affs.h
index ff44ff3..c8764bd 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -30,6 +30,8 @@
#define AFFS_AC_SIZE (AFFS_CACHE_SIZE/sizeof(struct affs_ext_key)/2)
#define AFFS_AC_MASK (AFFS_AC_SIZE-1)
+#define AFFSNAMEMAX 30U
+
struct affs_ext_key {
u32 ext; /* idx of the extended block */
u32 key; /* block number */
fs/affs/amigaffs.c
View filediff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index c852f2f..388da1e 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -30,7 +30,7 @@ affs_insert_hash(struct inode *dir, struct buffer_head *bh)
ino = bh->b_blocknr;
offset = affs_hash_name(sb, AFFS_TAIL(sb, bh)->name + 1, AFFS_TAIL(sb, bh)->name[0]);
- pr_debug("%s(dir=%u, ino=%d)\n", __func__, (u32)dir->i_ino, ino);
+ pr_debug("%s(dir=%lu, ino=%d)\n", __func__, dir->i_ino, ino);
dir_bh = affs_bread(sb, dir->i_ino);
if (!dir_bh)
@@ -80,8 +80,8 @@ affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh)
sb = dir->i_sb;
rem_ino = rem_bh->b_blocknr;
offset = affs_hash_name(sb, AFFS_TAIL(sb, rem_bh)->name+1, AFFS_TAIL(sb, rem_bh)->name[0]);
- pr_debug("%s(dir=%d, ino=%d, hashval=%d)\n",
- __func__, (u32)dir->i_ino, rem_ino, offset);
+ pr_debug("%s(dir=%lu, ino=%d, hashval=%d)\n", __func__, dir->i_ino,
+ rem_ino, offset);
bh = affs_bread(sb, dir->i_ino);
if (!bh)
@@ -483,11 +483,10 @@ affs_check_name(const unsigned char *name, int len, bool notruncate)
{
int i;
- if (len > 30) {
+ if (len > AFFSNAMEMAX) {
if (notruncate)
return -ENAMETOOLONG;
- else
- len = 30;
+ len = AFFSNAMEMAX;
}
for (i = 0; i < len; i++) {
if (name[i] < ' ' || name[i] == ':'
@@ -508,7 +507,7 @@ affs_check_name(const unsigned char *name, int len, bool notruncate)
int
affs_copy_name(unsigned char *bstr, struct dentry *dentry)
{
- int len = min(dentry->d_name.len, 30u);
+ u32 len = min(dentry->d_name.len, AFFSNAMEMAX);
*bstr++ = len;
memcpy(bstr, dentry->d_name.name, len);
fs/affs/bitmap.c
View filediff --git a/fs/affs/bitmap.c b/fs/affs/bitmap.c
index c8de511..6751489 100644
--- a/fs/affs/bitmap.c
+++ b/fs/affs/bitmap.c
@@ -99,7 +99,6 @@ err_bh_read:
err_range:
affs_error(sb, "affs_free_block","Block %u outside partition", block);
- return;
}
/*
fs/affs/dir.c
View filediff --git a/fs/affs/dir.c b/fs/affs/dir.c
index 59f07be..ac4f318 100644
--- a/fs/affs/dir.c
+++ b/fs/affs/dir.c
@@ -54,8 +54,7 @@ affs_readdir(struct file *file, struct dir_context *ctx)
u32 ino;
int error = 0;
- pr_debug("%s(ino=%lu,f_pos=%lx)\n",
- __func__, inode->i_ino, (unsigned long)ctx->pos);
+ pr_debug("%s(ino=%lu,f_pos=%llx)\n", __func__, inode->i_ino, ctx->pos);
if (ctx->pos < 2) {
file->private_data = (void *)0;
@@ -115,11 +114,11 @@ inside:
break;
}
- namelen = min(AFFS_TAIL(sb, fh_bh)->name[0], (u8)30);
+ namelen = min(AFFS_TAIL(sb, fh_bh)->name[0],
+ (u8)AFFSNAMEMAX);
name = AFFS_TAIL(sb, fh_bh)->name + 1;
- pr_debug("readdir(): dir_emit(\"%.*s\", "
- "ino=%u), hash=%d, f_pos=%x\n",
- namelen, name, ino, hash_pos, (u32)ctx->pos);
+ pr_debug("readdir(): dir_emit(\"%.*s\", ino=%u), hash=%d, f_pos=%llx\n",
+ namelen, name, ino, hash_pos, ctx->pos);
if (!dir_emit(ctx, name, namelen, ino, DT_UNKNOWN))
goto done;
fs/affs/file.c
View filediff --git a/fs/affs/file.c b/fs/affs/file.c
index 8faa659..d2468bf 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -180,8 +180,7 @@ affs_get_extblock_slow(struct inode *inode, u32 ext)
ext_key = be32_to_cpu(AFFS_TAIL(sb, bh)->extension);
if (ext < AFFS_I(inode)->i_extcnt)
goto read_ext;
- if (ext > AFFS_I(inode)->i_extcnt)
- BUG();
+ BUG_ON(ext > AFFS_I(inode)->i_extcnt);
bh = affs_alloc_extblock(inode, bh, ext);
if (IS_ERR(bh))
return bh;
@@ -198,8 +197,7 @@ affs_get_extblock_slow(struct inode *inode, u32 ext)
struct buffer_head *prev_bh;
/* allocate a new extended block */
- if (ext > AFFS_I(inode)->i_extcnt)
- BUG();
+ BUG_ON(ext > AFFS_I(inode)->i_extcnt);
/* get previous extended block */
prev_bh = affs_get_extblock(inode, ext - 1);
@@ -299,8 +297,8 @@ affs_get_block(struct inode *inode, sector_t block, struct buffer_head *bh_resul
struct buffer_head *ext_bh;
u32 ext;
- pr_debug("%s(%u, %lu)\n",
- __func__, (u32)inode->i_ino, (unsigned long)block);
+ pr_debug("%s(%lu, %llu)\n", __func__, inode->i_ino,
+ (unsigned long long)block);
BUG_ON(block > (sector_t)0x7fffffffUL);
@@ -330,8 +328,9 @@ affs_get_block(struct inode *inode, sector_t block, struct buffer_head *bh_resul
/* store new block */
if (bh_result->b_blocknr)
- affs_warning(sb, "get_block", "block already set (%lx)",
- (unsigned long)bh_result->b_blocknr);
+ affs_warning(sb, "get_block",
+ "block already set (%llx)",
+ (unsigned long long)bh_result->b_blocknr);
AFFS_BLOCK(sb, ext_bh, block) = cpu_to_be32(blocknr);
AFFS_HEAD(ext_bh)->block_count = cpu_to_be32(block + 1);
affs_adjust_checksum(ext_bh, blocknr - bh_result->b_blocknr + 1);
@@ -353,8 +352,8 @@ affs_get_block(struct inode *inode, sector_t block, struct buffer_head *bh_resul
return 0;
err_big:
- affs_error(inode->i_sb, "get_block", "strange block request %d",
- (int)block);
+ affs_error(inode->i_sb, "get_block", "strange block request %llu",
+ (unsigned long long)block);
return -EIO;
err_ext:
// unlock cache
@@ -399,6 +398,13 @@ affs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
size_t count = iov_iter_count(iter);
ssize_t ret;
+ if (rw == WRITE) {
+ loff_t size = offset + count;
+
+ if (AFFS_I(inode)->mmu_private < size)
+ return 0;
+ }
+
ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, affs_get_block);
if (ret < 0 && (rw & WRITE))
affs_write_failed(mapping, offset + count);
@@ -503,7 +509,7 @@ affs_do_readpage_ofs(struct page *page, unsigned to)
u32 bidx, boff, bsize;
u32 tmp;
- pr_debug("%s(%u, %ld, 0, %d)\n", __func__, (u32)inode->i_ino,
+ pr_debug("%s(%lu, %ld, 0, %d)\n", __func__, inode->i_ino,
page->index, to);
BUG_ON(to > PAGE_CACHE_SIZE);
kmap(page);
@@ -539,7 +545,7 @@ affs_extent_file_ofs(struct inode *inode, u32 newsize)
u32 size, bsize;
u32 tmp;
- pr_debug("%s(%u, %d)\n", __func__, (u32)inode->i_ino, newsize);
+ pr_debug("%s(%lu, %d)\n", __func__, inode->i_ino, newsize);
bsize = AFFS_SB(sb)->s_data_blksize;
bh = NULL;
size = AFFS_I(inode)->mmu_private;
@@ -608,7 +614,7 @@ affs_readpage_ofs(struct file *file, struct page *page)
u32 to;
int err;
- pr_debug("%s(%u, %ld)\n", __func__, (u32)inode->i_ino, page->index);
+ pr_debug("%s(%lu, %ld)\n", __func__, inode->i_ino, page->index);
to = PAGE_CACHE_SIZE;
if (((page->index + 1) << PAGE_CACHE_SHIFT) > inode->i_size) {
to = inode->i_size & ~PAGE_CACHE_MASK;
@@ -631,8 +637,8 @@ static int affs_write_begin_ofs(struct file *file, struct address_space *mapping
pgoff_t index;
int err = 0;
- pr_debug("%s(%u, %llu, %llu)\n", __func__, (u32)inode->i_ino,
- (unsigned long long)pos, (unsigned long long)pos + len);
+ pr_debug("%s(%lu, %llu, %llu)\n", __func__, inode->i_ino, pos,
+ pos + len);
if (pos > AFFS_I(inode)->mmu_private) {
/* XXX: this probably leaves a too-big i_size in case of
* failure. Should really be updating i_size at write_end time
@@ -681,9 +687,8 @@ static int affs_write_end_ofs(struct file *file, struct address_space *mapping,
* due to write_begin.
*/
- pr_debug("%s(%u, %llu, %llu)\n",
- __func__, (u32)inode->i_ino, (unsigned long long)pos,
- (unsigned long long)pos + len);
+ pr_debug("%s(%lu, %llu, %llu)\n", __func__, inode->i_ino, pos,
+ pos + len);
bsize = AFFS_SB(sb)->s_data_blksize;
data = page_address(page);
@@ -831,8 +836,8 @@ affs_truncate(struct inode *inode)
struct buffer_head *ext_bh;
int i;
- pr_debug("truncate(inode=%d, oldsize=%u, newsize=%u)\n",
- (u32)inode->i_ino, (u32)AFFS_I(inode)->mmu_private, (u32)inode->i_size);
+ pr_debug("truncate(inode=%lu, oldsize=%llu, newsize=%llu)\n",
+ inode->i_ino, AFFS_I(inode)->mmu_private, inode->i_size);
last_blk = 0;
ext = 0;
@@ -863,7 +868,7 @@ affs_truncate(struct inode *inode)
if (IS_ERR(ext_bh)) {
affs_warning(sb, "truncate",
"unexpected read error for ext block %u (%ld)",
- (unsigned int)ext, PTR_ERR(ext_bh));
+ ext, PTR_ERR(ext_bh));
return;
}
if (AFFS_I(inode)->i_lc) {
@@ -911,7 +916,7 @@ affs_truncate(struct inode *inode)
if (IS_ERR(bh)) {
affs_warning(sb, "truncate",
"unexpected read error for last block %u (%ld)",
- (unsigned int)ext, PTR_ERR(bh));
+ ext, PTR_ERR(bh));
return;
}
tmp = be32_to_cpu(AFFS_DATA_HEAD(bh)->next);
fs/affs/inode.c
View filediff --git a/fs/affs/inode.c b/fs/affs/inode.c
index d0609a2..6f34510 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -13,8 +13,6 @@
#include <linux/gfp.h>
#include "affs.h"
-extern const struct inode_operations affs_symlink_inode_operations;
-
struct inode *affs_iget(struct super_block *sb, unsigned long ino)
{
struct affs_sb_info *sbi = AFFS_SB(sb);
@@ -348,9 +346,8 @@ affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s3
u32 block = 0;
int retval;
- pr_debug("%s(dir=%u, inode=%u, \"%pd\", type=%d)\n",
- __func__, (u32)dir->i_ino,
- (u32)inode->i_ino, dentry, type);
+ pr_debug("%s(dir=%lu, inode=%lu, \"%pd\", type=%d)\n", __func__,
+ dir->i_ino, inode->i_ino, dentry, type);
retval = -EIO;
bh = affs_bread(sb, inode->i_ino);
fs/affs/namei.c
View filediff --git a/fs/affs/namei.c b/fs/affs/namei.c
index bbc3853..ffb7bd8 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -64,15 +64,16 @@ __affs_hash_dentry(struct qstr *qstr, toupper_t toupper, bool notruncate)
{
const u8 *name = qstr->name;
unsigned long hash;
- int i;
+ int retval;
+ u32 len;
- i = affs_check_name(qstr->name, qstr->len, notruncate);
- if (i)
- return i;
+ retval = affs_check_name(qstr->name, qstr->len, notruncate);
+ if (retval)
+ return retval;
hash = init_name_hash();
- i = min(qstr->len, 30u);
- for (; i > 0; name++, i--)
+ len = min(qstr->len, AFFSNAMEMAX);
+ for (; len > 0; name++, len--)
hash = partial_name_hash(toupper(*name), hash);
qstr->hash = end_name_hash(hash);
@@ -114,10 +115,10 @@ static inline int __affs_compare_dentry(unsigned int len,
* If the names are longer than the allowed 30 chars,
* the excess is ignored, so their length may differ.
*/
- if (len >= 30) {
- if (name->len < 30)
+ if (len >= AFFSNAMEMAX) {
+ if (name->len < AFFSNAMEMAX)
return 1;
- len = 30;
+ len = AFFSNAMEMAX;
} else if (len != name->len)
return 1;
@@ -156,10 +157,10 @@ affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper)
const u8 *name = dentry->d_name.name;
int len = dentry->d_name.len;
- if (len >= 30) {
- if (*name2 < 30)
+ if (len >= AFFSNAMEMAX) {
+ if (*name2 < AFFSNAMEMAX)
return 0;
- len = 30;
+ len = AFFSNAMEMAX;
} else if (len != *name2)
return 0;
@@ -173,9 +174,9 @@ int
affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len)
{
toupper_t toupper = affs_get_toupper(sb);
- int hash;
+ u32 hash;
- hash = len = min(len, 30u);
+ hash = len = min(len, AFFSNAMEMAX);
for (; len > 0; len--)
hash = (hash * 13 + toupper(*name++)) & 0x7ff;
@@ -248,9 +249,8 @@ affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
int
affs_unlink(struct inode *dir, struct dentry *dentry)
{
- pr_debug("%s(dir=%d, %lu \"%pd\")\n",
- __func__, (u32)dir->i_ino, dentry->d_inode->i_ino,
- dentry);
+ pr_debug("%s(dir=%lu, %lu \"%pd\")\n", __func__, dir->i_ino,
+ dentry->d_inode->i_ino, dentry);
return affs_remove_header(dentry);
}
@@ -317,9 +317,8 @@ affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
int
affs_rmdir(struct inode *dir, struct dentry *dentry)
{
- pr_debug("%s(dir=%u, %lu \"%pd\")\n",
- __func__, (u32)dir->i_ino, dentry->d_inode->i_ino,
- dentry);
+ pr_debug("%s(dir=%lu, %lu \"%pd\")\n", __func__, dir->i_ino,
+ dentry->d_inode->i_ino, dentry);
return affs_remove_header(dentry);
}
@@ -404,8 +403,7 @@ affs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
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fs/affs/super.c
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fs/befs/linuxvfs.c
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scripts/Makefile
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