Merge updates from Andrew Morton:
- fsnotify updates
- ocfs2 updates
- all of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (127 commits)
console: don't prefer first registered if DT specifies stdout-path
cred: simpler, 1D supplementary groups
CREDITS: update Pavel's information, add GPG key, remove snail mail address
mailmap: add Johan Hovold
.gitattributes: set git diff driver for C source code files
uprobes: remove function declarations from arch/{mips,s390}
spelling.txt: "modeled" is spelt correctly
nmi_backtrace: generate one-line reports for idle cpus
arch/tile: adopt the new nmi_backtrace framework
nmi_backtrace: do a local dump_stack() instead of a self-NMI
nmi_backtrace: add more trigger_*_cpu_backtrace() methods
min/max: remove sparse warnings when they're nested
Documentation/filesystems/proc.txt: add more description for maps/smaps
mm, proc: fix region lost in /proc/self/smaps
proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self
proc: add LSM hook checks to /proc/<tid>/timerslack_ns
proc: relax /proc/<tid>/timerslack_ns capability requirements
meminfo: break apart a very long seq_printf with #ifdefs
seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char
proc: faster /proc/*/status
...
bool
default y
select ARCH_CLOCKSOURCE_DATA
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
ARCH_INTEGRATOR || \
ARCH_IOP13XX || \
ARCH_KS8695 || \
- (ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
+ ARCH_REALVIEW
default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
default 0x20000000 if ARCH_S5PV210
- default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
default 0xc0000000 if ARCH_SA1100
help
Please provide the physical address corresponding to the
select GENERIC_CLOCKEVENTS
select MIGHT_HAVE_PCI
select MULTI_IRQ_HANDLER
+ select PCI_DOMAINS if PCI
select SPARSE_IRQ
select USE_OF
select RTC_CLASS
select RTC_DRV_GENERIC
select INIT_ALL_POSSIBLE
+ select HAVE_MEMBLOCK
+ select NO_BOOTMEM
select BUG
select BUILDTIME_EXTABLE_SORT
select HAVE_PERF_EVENTS
select GENERIC_ATOMIC64 if !64BIT
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
- select BROKEN_RODATA
select GENERIC_IRQ_PROBE
select GENERIC_PCI_IOMAP
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select SYSCTL_ARCH_UNALIGN_ALLOW
select SYSCTL_EXCEPTION_TRACE
select HAVE_MOD_ARCH_SPECIFIC
+ select HAVE_ARCH_HARDENED_USERCOPY
select VIRT_TO_BUS
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS
.text ALIGN(PAGE_SIZE) : {
TEXT_TEXT
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
/* BSS */
BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE)
- /* bootmap is allocated in setup_bootmem() directly behind bss. */
-
. = ALIGN(HUGEPAGE_SIZE);
_end = . ;
bool
default y if PPC64
-config WORD_SIZE
- int
- default 64 if PPC64
- default 32 if !PPC64
-
config ARCH_PHYS_ADDR_T_64BIT
def_bool PPC64 || PHYS_64BIT
select VIRT_TO_BUS if !PPC64
select HAVE_IDE
select HAVE_IOREMAP_PROT
- select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
+ select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
select HAVE_KPROBES
select HAVE_ARCH_KGDB
select HAVE_KRETPROBES
select HAVE_DEBUG_KMEMLEAK
select ARCH_HAS_SG_CHAIN
select GENERIC_ATOMIC64 if PPC32
- select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select HAVE_PERF_EVENTS
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
select GENERIC_CPU_AUTOPROBE
select HAVE_VIRT_CPU_ACCOUNTING
select HAVE_ARCH_HARDENED_USERCOPY
+ select HAVE_KERNEL_GZIP
config GENERIC_CSUM
def_bool CPU_LITTLE_ENDIAN
int "Maximum zone order"
range 8 9 if PPC64 && PPC_64K_PAGES
default "9" if PPC64 && PPC_64K_PAGES
- range 9 13 if PPC64 && !PPC_64K_PAGES
+ range 13 13 if PPC64 && !PPC_64K_PAGES
default "13" if PPC64 && !PPC_64K_PAGES
range 9 64 if PPC32 && PPC_16K_PAGES
default "9" if PPC32 && PPC_16K_PAGES
return 1;
}
+ unsigned long __init arch_reserved_kernel_pages(void)
+ {
+ return memblock_reserved_size() / PAGE_SIZE;
+ }
+
/* Look for fadump= cmdline option. */
static int __init early_fadump_param(char *p)
{
elf->e_entry = 0;
elf->e_phoff = sizeof(struct elfhdr);
elf->e_shoff = 0;
- elf->e_flags = ELF_CORE_EFLAGS;
+#if defined(_CALL_ELF)
+ elf->e_flags = _CALL_ELF;
+#else
+ elf->e_flags = 0;
+#endif
elf->e_ehsize = sizeof(struct elfhdr);
elf->e_phentsize = sizeof(struct elf_phdr);
elf->e_phnum = 0;
* Take away the '/proc/vmcore'. We are releasing the dump
* memory, hence it will not be valid anymore.
*/
+#ifdef CONFIG_PROC_VMCORE
vmcore_cleanup();
+#endif
fadump_invalidate_release_mem();
} else
* Text, read only data and other permanent read-only sections
*/
- /* Text and gots */
+ _text = .;
+ _stext = .;
+
+ /*
+ * Head text.
+ * This needs to be in its own output section to avoid ld placing
+ * branch trampoline stubs randomly throughout the fixed sections,
+ * which it will do (even if the branch comes from another section)
+ * in order to optimize stub generation.
+ */
+ .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {
+#ifdef CONFIG_PPC64
+ KEEP(*(.head.text.first_256B));
+#ifdef CONFIG_PPC_BOOK3E
+# define END_FIXED 0x100
+#else
+ KEEP(*(.head.text.real_vectors));
+ *(.head.text.real_trampolines);
+ KEEP(*(.head.text.virt_vectors));
+ *(.head.text.virt_trampolines);
+# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)
+ KEEP(*(.head.data.fwnmi_page));
+# define END_FIXED 0x8000
+# else
+# define END_FIXED 0x7000
+# endif
+#endif
+ ASSERT((. == END_FIXED), "vmlinux.lds.S: fixed section overflow error");
+#else /* !CONFIG_PPC64 */
+ HEAD_TEXT
+#endif
+ } :kernel
+
+ /*
+ * If the build dies here, it's likely code in head_64.S is referencing
+ * labels it can't reach, and the linker inserting stubs without the
+ * assembler's knowledge. To debug, remove the above assert and
+ * rebuild. Look for branch stubs in the fixed section region.
+ *
+ * Linker stub generation could be allowed in "trampoline"
+ * sections if absolutely necessary, but this would require
+ * some rework of the fixed sections. Before resorting to this,
+ * consider references that have sufficient addressing range,
+ * (e.g., hand coded trampolines) so the linker does not have
+ * to add stubs.
+ *
+ * Linker stubs at the top of the main text section are currently not
+ * detected, and will result in a crash at boot due to offsets being
+ * wrong.
+ */
.text : AT(ADDR(.text) - LOAD_OFFSET) {
ALIGN_FUNCTION();
- HEAD_TEXT
- _text = .;
/* careful! __ftr_alt_* sections need to be close to .text */
*(.text .fixup __ftr_alt_* .ref.text)
SCHED_TEXT
+ CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
+ MEM_KEEP(init.text)
+ MEM_KEEP(exit.text)
#ifdef CONFIG_PPC32
*(.got1)
static ssize_t
ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
- struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(iocb->ki_filp);
- struct blk_plug plug;
int o_direct = iocb->ki_flags & IOCB_DIRECT;
int unaligned_aio = 0;
int overwrite = 0;
if (o_direct) {
size_t length = iov_iter_count(from);
loff_t pos = iocb->ki_pos;
- blk_start_plug(&plug);
/* check whether we do a DIO overwrite or not */
if (ext4_should_dioread_nolock(inode) && !unaligned_aio &&
- !file->f_mapping->nrpages && pos + length <= i_size_read(inode)) {
+ pos + length <= i_size_read(inode)) {
struct ext4_map_blocks map;
unsigned int blkbits = inode->i_blkbits;
int err, len;
map.m_lblk = pos >> blkbits;
- map.m_len = (EXT4_BLOCK_ALIGN(pos + length, blkbits) >> blkbits)
- - map.m_lblk;
+ map.m_len = EXT4_MAX_BLOCKS(length, pos, blkbits);
len = map.m_len;
err = ext4_map_blocks(NULL, inode, &map, 0);
if (ret > 0)
ret = generic_write_sync(iocb, ret);
- if (o_direct)
- blk_finish_plug(&plug);
return ret;
.open = ext4_file_open,
.release = ext4_release_file,
.fsync = ext4_sync_file,
+ .get_unmapped_area = thp_get_unmapped_area,
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
.fallocate = ext4_fallocate,
int nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync);
loff_t nfs_file_llseek(struct file *, loff_t, int);
ssize_t nfs_file_read(struct kiocb *, struct iov_iter *);
-ssize_t nfs_file_splice_read(struct file *, loff_t *, struct pipe_inode_info *,
- size_t, unsigned int);
int nfs_file_mmap(struct file *, struct vm_area_struct *);
ssize_t nfs_file_write(struct kiocb *, struct iov_iter *);
int nfs_file_release(struct inode *, struct file *);
loff_t i_size = i_size_read(page_file_mapping(page)->host);
if (i_size > 0) {
- pgoff_t page_index = page_file_index(page);
+ pgoff_t index = page_index(page);
pgoff_t end_index = (i_size - 1) >> PAGE_SHIFT;
- if (page_index < end_index)
+ if (index < end_index)
return PAGE_SIZE;
- if (page_index == end_index)
+ if (index == end_index)
return ((i_size - 1) & ~PAGE_MASK) + 1;
}
return 0;
return ret;
}
-STATIC ssize_t
-xfs_file_splice_read(
- struct file *infilp,
- loff_t *ppos,
- struct pipe_inode_info *pipe,
- size_t count,
- unsigned int flags)
-{
- struct xfs_inode *ip = XFS_I(infilp->f_mapping->host);
- ssize_t ret;
-
- XFS_STATS_INC(ip->i_mount, xs_read_calls);
-
- if (XFS_FORCED_SHUTDOWN(ip->i_mount))
- return -EIO;
-
- trace_xfs_file_splice_read(ip, count, *ppos);
-
- /*
- * DAX inodes cannot ues the page cache for splice, so we have to push
- * them through the VFS IO path. This means it goes through
- * ->read_iter, which for us takes the XFS_IOLOCK_SHARED. Hence we
- * cannot lock the splice operation at this level for DAX inodes.
- */
- if (IS_DAX(VFS_I(ip))) {
- ret = default_file_splice_read(infilp, ppos, pipe, count,
- flags);
- goto out;
- }
-
- xfs_rw_ilock(ip, XFS_IOLOCK_SHARED);
- ret = generic_file_splice_read(infilp, ppos, pipe, count, flags);
- xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED);
-out:
- if (ret > 0)
- XFS_STATS_ADD(ip->i_mount, xs_read_bytes, ret);
- return ret;
-}
-
/*
* Zero any on disk space between the current EOF and the new, larger EOF.
*
.llseek = xfs_file_llseek,
.read_iter = xfs_file_read_iter,
.write_iter = xfs_file_write_iter,
- .splice_read = xfs_file_splice_read,
+ .splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
.unlocked_ioctl = xfs_file_ioctl,
#ifdef CONFIG_COMPAT
.open = xfs_file_open,
.release = xfs_file_release,
.fsync = xfs_file_fsync,
+ .get_unmapped_area = thp_get_unmapped_area,
.fallocate = xfs_file_fallocate,
};
config GENERIC_ATOMIC64
bool
- config ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
- def_bool y if GENERIC_ATOMIC64
-
config LRU_CACHE
tristate
bool
select STACKTRACE
+config SBITMAP
+ bool
+
endmenu
return retval ? retval : error;
}
-static ssize_t shmem_file_splice_read(struct file *in, loff_t *ppos,
- struct pipe_inode_info *pipe, size_t len,
- unsigned int flags)
-{
- struct address_space *mapping = in->f_mapping;
- struct inode *inode = mapping->host;
- unsigned int loff, nr_pages, req_pages;
- struct page *pages[PIPE_DEF_BUFFERS];
- struct partial_page partial[PIPE_DEF_BUFFERS];
- struct page *page;
- pgoff_t index, end_index;
- loff_t isize, left;
- int error, page_nr;
- struct splice_pipe_desc spd = {
- .pages = pages,
- .partial = partial,
- .nr_pages_max = PIPE_DEF_BUFFERS,
- .flags = flags,
- .ops = &page_cache_pipe_buf_ops,
- .spd_release = spd_release_page,
- };
-
- isize = i_size_read(inode);
- if (unlikely(*ppos >= isize))
- return 0;
-
- left = isize - *ppos;
- if (unlikely(left < len))
- len = left;
-
- if (splice_grow_spd(pipe, &spd))
- return -ENOMEM;
-
- index = *ppos >> PAGE_SHIFT;
- loff = *ppos & ~PAGE_MASK;
- req_pages = (len + loff + PAGE_SIZE - 1) >> PAGE_SHIFT;
- nr_pages = min(req_pages, spd.nr_pages_max);
-
- spd.nr_pages = find_get_pages_contig(mapping, index,
- nr_pages, spd.pages);
- index += spd.nr_pages;
- error = 0;
-
- while (spd.nr_pages < nr_pages) {
- error = shmem_getpage(inode, index, &page, SGP_CACHE);
- if (error)
- break;
- unlock_page(page);
- spd.pages[spd.nr_pages++] = page;
- index++;
- }
-
- index = *ppos >> PAGE_SHIFT;
- nr_pages = spd.nr_pages;
- spd.nr_pages = 0;
-
- for (page_nr = 0; page_nr < nr_pages; page_nr++) {
- unsigned int this_len;
-
- if (!len)
- break;
-
- this_len = min_t(unsigned long, len, PAGE_SIZE - loff);
- page = spd.pages[page_nr];
-
- if (!PageUptodate(page) || page->mapping != mapping) {
- error = shmem_getpage(inode, index, &page, SGP_CACHE);
- if (error)
- break;
- unlock_page(page);
- put_page(spd.pages[page_nr]);
- spd.pages[page_nr] = page;
- }
-
- isize = i_size_read(inode);
- end_index = (isize - 1) >> PAGE_SHIFT;
- if (unlikely(!isize || index > end_index))
- break;
-
- if (end_index == index) {
- unsigned int plen;
-
- plen = ((isize - 1) & ~PAGE_MASK) + 1;
- if (plen <= loff)
- break;
-
- this_len = min(this_len, plen - loff);
- len = this_len;
- }
-
- spd.partial[page_nr].offset = loff;
- spd.partial[page_nr].len = this_len;
- len -= this_len;
- loff = 0;
- spd.nr_pages++;
- index++;
- }
-
- while (page_nr < nr_pages)
- put_page(spd.pages[page_nr++]);
-
- if (spd.nr_pages)
- error = splice_to_pipe(pipe, &spd);
-
- splice_shrink_spd(&spd);
-
- if (error > 0) {
- *ppos += error;
- file_accessed(in);
- }
- return error;
-}
-
/*
* llseek SEEK_DATA or SEEK_HOLE through the radix_tree.
*/
.read_iter = shmem_file_read_iter,
.write_iter = generic_file_write_iter,
.fsync = noop_fsync,
- .splice_read = shmem_file_splice_read,
+ .splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
.fallocate = shmem_fallocate,
#endif
/* common code */
- static struct dentry_operations anon_ops = {
+ static const struct dentry_operations anon_ops = {
.d_dname = simple_dname
};
sk->sk_rcvbuf = sysctl_tcp_rmem[1];
local_bh_disable();
- if (mem_cgroup_sockets_enabled)
- sock_update_memcg(sk);
sk_sockets_allocated_inc(sk);
local_bh_enable();
}
int ret;
ret = skb_splice_bits(skb, skb->sk, offset, tss->pipe,
- min(rd_desc->count, len), tss->flags,
- skb_socket_splice);
+ min(rd_desc->count, len), tss->flags);
if (ret > 0)
rd_desc->count -= ret;
return ret;
projects / cascardo / linux.git / commitdiff