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-rw-r--r--fs/binfmt_flat.c25
-rw-r--r--fs/compat.c2
-rw-r--r--fs/configfs/inode.c9
-rw-r--r--fs/ext2/inode.c2
-rw-r--r--fs/fcntl.c7
-rw-r--r--fs/fs-writeback.c64
-rw-r--r--fs/libfs.c3
-rw-r--r--fs/minix/dir.c4
-rw-r--r--fs/nilfs2/btree.h2
-rw-r--r--fs/nilfs2/segbuf.h2
-rw-r--r--fs/nilfs2/segment.h2
-rw-r--r--fs/nilfs2/super.c8
-rw-r--r--fs/pipe.c77
-rw-r--r--fs/splice.c2
-rw-r--r--fs/sync.c2
-rw-r--r--fs/sysfs/inode.c6
16 files changed, 108 insertions, 109 deletions
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index 49566c1687d..b6ab27ccf21 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -56,15 +56,22 @@
#endif
/*
- * User data (stack, data section and bss) needs to be aligned
- * for the same reasons as SLAB memory is, and to the same amount.
- * Avoid duplicating architecture specific code by using the same
- * macro as with SLAB allocation:
+ * User data (data section and bss) needs to be aligned.
+ * We pick 0x20 here because it is the max value elf2flt has always
+ * used in producing FLAT files, and because it seems to be large
+ * enough to make all the gcc alignment related tests happy.
+ */
+#define FLAT_DATA_ALIGN (0x20)
+
+/*
+ * User data (stack) also needs to be aligned.
+ * Here we can be a bit looser than the data sections since this
+ * needs to only meet arch ABI requirements.
*/
#ifdef ARCH_SLAB_MINALIGN
-#define FLAT_DATA_ALIGN (ARCH_SLAB_MINALIGN)
+#define FLAT_STACK_ALIGN (ARCH_SLAB_MINALIGN)
#else
-#define FLAT_DATA_ALIGN (sizeof(void *))
+#define FLAT_STACK_ALIGN (sizeof(void *))
#endif
#define RELOC_FAILED 0xff00ff01 /* Relocation incorrect somewhere */
@@ -129,7 +136,7 @@ static unsigned long create_flat_tables(
sp = (unsigned long *)p;
sp -= (envc + argc + 2) + 1 + (flat_argvp_envp_on_stack() ? 2 : 0);
- sp = (unsigned long *) ((unsigned long)sp & -FLAT_DATA_ALIGN);
+ sp = (unsigned long *) ((unsigned long)sp & -FLAT_STACK_ALIGN);
argv = sp + 1 + (flat_argvp_envp_on_stack() ? 2 : 0);
envp = argv + (argc + 1);
@@ -589,7 +596,7 @@ static int load_flat_file(struct linux_binprm * bprm,
if (IS_ERR_VALUE(result)) {
printk("Unable to read data+bss, errno %d\n", (int)-result);
do_munmap(current->mm, textpos, text_len);
- do_munmap(current->mm, realdatastart, data_len + extra);
+ do_munmap(current->mm, realdatastart, len);
ret = result;
goto err;
}
@@ -876,7 +883,7 @@ static int load_flat_binary(struct linux_binprm * bprm, struct pt_regs * regs)
stack_len = TOP_OF_ARGS - bprm->p; /* the strings */
stack_len += (bprm->argc + 1) * sizeof(char *); /* the argv array */
stack_len += (bprm->envc + 1) * sizeof(char *); /* the envp array */
- stack_len += FLAT_DATA_ALIGN - 1; /* reserve for upcoming alignment */
+ stack_len += FLAT_STACK_ALIGN - 1; /* reserve for upcoming alignment */
res = load_flat_file(bprm, &libinfo, 0, &stack_len);
if (IS_ERR_VALUE(res))
diff --git a/fs/compat.c b/fs/compat.c
index f0b391c5055..6490d2134ff 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -626,7 +626,7 @@ ssize_t compat_rw_copy_check_uvector(int type,
tot_len += len;
if (tot_len < tmp) /* maths overflow on the compat_ssize_t */
goto out;
- if (!access_ok(vrfy_dir(type), buf, len)) {
+ if (!access_ok(vrfy_dir(type), compat_ptr(buf), len)) {
ret = -EFAULT;
goto out;
}
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index 41645142b88..cf78d44a8d6 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -72,10 +72,6 @@ int configfs_setattr(struct dentry * dentry, struct iattr * iattr)
if (!sd)
return -EINVAL;
- error = simple_setattr(dentry, iattr);
- if (error)
- return error;
-
sd_iattr = sd->s_iattr;
if (!sd_iattr) {
/* setting attributes for the first time, allocate now */
@@ -89,9 +85,12 @@ int configfs_setattr(struct dentry * dentry, struct iattr * iattr)
sd_iattr->ia_atime = sd_iattr->ia_mtime = sd_iattr->ia_ctime = CURRENT_TIME;
sd->s_iattr = sd_iattr;
}
-
/* attributes were changed atleast once in past */
+ error = simple_setattr(dentry, iattr);
+ if (error)
+ return error;
+
if (ia_valid & ATTR_UID)
sd_iattr->ia_uid = iattr->ia_uid;
if (ia_valid & ATTR_GID)
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 19214435b75..3675088cb88 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1552,7 +1552,7 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
if (error)
return error;
}
- if (iattr->ia_valid & ATTR_SIZE) {
+ if (iattr->ia_valid & ATTR_SIZE && iattr->ia_size != inode->i_size) {
error = ext2_setsize(inode, iattr->ia_size);
if (error)
return error;
diff --git a/fs/fcntl.c b/fs/fcntl.c
index f74d270ba15..51e11bf5708 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -274,7 +274,7 @@ static int f_setown_ex(struct file *filp, unsigned long arg)
ret = copy_from_user(&owner, owner_p, sizeof(owner));
if (ret)
- return ret;
+ return -EFAULT;
switch (owner.type) {
case F_OWNER_TID:
@@ -332,8 +332,11 @@ static int f_getown_ex(struct file *filp, unsigned long arg)
}
read_unlock(&filp->f_owner.lock);
- if (!ret)
+ if (!ret) {
ret = copy_to_user(owner_p, &owner, sizeof(owner));
+ if (ret)
+ ret = -EFAULT;
+ }
return ret;
}
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index ea8592b9069..1d1088f48bc 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -45,7 +45,6 @@ struct wb_writeback_args {
unsigned int for_kupdate:1;
unsigned int range_cyclic:1;
unsigned int for_background:1;
- unsigned int sb_pinned:1;
};
/*
@@ -193,8 +192,7 @@ static void bdi_wait_on_work_clear(struct bdi_work *work)
}
static void bdi_alloc_queue_work(struct backing_dev_info *bdi,
- struct wb_writeback_args *args,
- int wait)
+ struct wb_writeback_args *args)
{
struct bdi_work *work;
@@ -206,8 +204,6 @@ static void bdi_alloc_queue_work(struct backing_dev_info *bdi,
if (work) {
bdi_work_init(work, args);
bdi_queue_work(bdi, work);
- if (wait)
- bdi_wait_on_work_clear(work);
} else {
struct bdi_writeback *wb = &bdi->wb;
@@ -234,11 +230,6 @@ static void bdi_sync_writeback(struct backing_dev_info *bdi,
.sync_mode = WB_SYNC_ALL,
.nr_pages = LONG_MAX,
.range_cyclic = 0,
- /*
- * Setting sb_pinned is not necessary for WB_SYNC_ALL, but
- * lets make it explicitly clear.
- */
- .sb_pinned = 1,
};
struct bdi_work work;
@@ -254,23 +245,21 @@ static void bdi_sync_writeback(struct backing_dev_info *bdi,
* @bdi: the backing device to write from
* @sb: write inodes from this super_block
* @nr_pages: the number of pages to write
- * @sb_locked: caller already holds sb umount sem.
*
* Description:
* This does WB_SYNC_NONE opportunistic writeback. The IO is only
* started when this function returns, we make no guarentees on
- * completion. Caller specifies whether sb umount sem is held already or not.
+ * completion. Caller need not hold sb s_umount semaphore.
*
*/
void bdi_start_writeback(struct backing_dev_info *bdi, struct super_block *sb,
- long nr_pages, int sb_locked)
+ long nr_pages)
{
struct wb_writeback_args args = {
.sb = sb,
.sync_mode = WB_SYNC_NONE,
.nr_pages = nr_pages,
.range_cyclic = 1,
- .sb_pinned = sb_locked,
};
/*
@@ -282,7 +271,7 @@ void bdi_start_writeback(struct backing_dev_info *bdi, struct super_block *sb,
args.for_background = 1;
}
- bdi_alloc_queue_work(bdi, &args, sb_locked);
+ bdi_alloc_queue_work(bdi, &args);
}
/*
@@ -595,7 +584,7 @@ static enum sb_pin_state pin_sb_for_writeback(struct writeback_control *wbc,
/*
* Caller must already hold the ref for this
*/
- if (wbc->sync_mode == WB_SYNC_ALL || wbc->sb_pinned) {
+ if (wbc->sync_mode == WB_SYNC_ALL) {
WARN_ON(!rwsem_is_locked(&sb->s_umount));
return SB_NOT_PINNED;
}
@@ -769,7 +758,6 @@ static long wb_writeback(struct bdi_writeback *wb,
.for_kupdate = args->for_kupdate,
.for_background = args->for_background,
.range_cyclic = args->range_cyclic,
- .sb_pinned = args->sb_pinned,
};
unsigned long oldest_jif;
long wrote = 0;
@@ -912,7 +900,6 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
while ((work = get_next_work_item(bdi, wb)) != NULL) {
struct wb_writeback_args args = work->args;
- int post_clear;
/*
* Override sync mode, in case we must wait for completion
@@ -920,13 +907,11 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
if (force_wait)
work->args.sync_mode = args.sync_mode = WB_SYNC_ALL;
- post_clear = WB_SYNC_ALL || args.sb_pinned;
-
/*
* If this isn't a data integrity operation, just notify
* that we have seen this work and we are now starting it.
*/
- if (!post_clear)
+ if (args.sync_mode == WB_SYNC_NONE)
wb_clear_pending(wb, work);
wrote += wb_writeback(wb, &args);
@@ -935,7 +920,7 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
* This is a data integrity writeback, so only do the
* notification when we have completed the work.
*/
- if (post_clear)
+ if (args.sync_mode == WB_SYNC_ALL)
wb_clear_pending(wb, work);
}
@@ -1011,7 +996,7 @@ static void bdi_writeback_all(struct super_block *sb, long nr_pages)
if (!bdi_has_dirty_io(bdi))
continue;
- bdi_alloc_queue_work(bdi, &args, 0);
+ bdi_alloc_queue_work(bdi, &args);
}
rcu_read_unlock();
@@ -1220,18 +1205,6 @@ static void wait_sb_inodes(struct super_block *sb)
iput(old_inode);
}
-static void __writeback_inodes_sb(struct super_block *sb, int sb_locked)
-{
- unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
- unsigned long nr_unstable = global_page_state(NR_UNSTABLE_NFS);
- long nr_to_write;
-
- nr_to_write = nr_dirty + nr_unstable +
- (inodes_stat.nr_inodes - inodes_stat.nr_unused);
-
- bdi_start_writeback(sb->s_bdi, sb, nr_to_write, sb_locked);
-}
-
/**
* writeback_inodes_sb - writeback dirty inodes from given super_block
* @sb: the superblock
@@ -1243,21 +1216,16 @@ static void __writeback_inodes_sb(struct super_block *sb, int sb_locked)
*/
void writeback_inodes_sb(struct super_block *sb)
{
- __writeback_inodes_sb(sb, 0);
-}
-EXPORT_SYMBOL(writeback_inodes_sb);
+ unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
+ unsigned long nr_unstable = global_page_state(NR_UNSTABLE_NFS);
+ long nr_to_write;
-/**
- * writeback_inodes_sb_locked - writeback dirty inodes from given super_block
- * @sb: the superblock
- *
- * Like writeback_inodes_sb(), except the caller already holds the
- * sb umount sem.
- */
-void writeback_inodes_sb_locked(struct super_block *sb)
-{
- __writeback_inodes_sb(sb, 1);
+ nr_to_write = nr_dirty + nr_unstable +
+ (inodes_stat.nr_inodes - inodes_stat.nr_unused);
+
+ bdi_start_writeback(sb->s_bdi, sb, nr_to_write);
}
+EXPORT_SYMBOL(writeback_inodes_sb);
/**
* writeback_inodes_sb_if_idle - start writeback if none underway
diff --git a/fs/libfs.c b/fs/libfs.c
index 09e1016eb77..dcaf972cbf1 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -489,7 +489,8 @@ int simple_write_end(struct file *file, struct address_space *mapping,
* unique inode values later for this filesystem, then you must take care
* to pass it an appropriate max_reserved value to avoid collisions.
*/
-int simple_fill_super(struct super_block *s, int magic, struct tree_descr *files)
+int simple_fill_super(struct super_block *s, unsigned long magic,
+ struct tree_descr *files)
{
struct inode *inode;
struct dentry *root;
diff --git a/fs/minix/dir.c b/fs/minix/dir.c
index 91969589131..1dbf921ca44 100644
--- a/fs/minix/dir.c
+++ b/fs/minix/dir.c
@@ -75,10 +75,6 @@ static struct page * dir_get_page(struct inode *dir, unsigned long n)
if (!IS_ERR(page))
kmap(page);
return page;
-
-fail:
- dir_put_page(page);
- return ERR_PTR(-EIO);
}
static inline void *minix_next_entry(void *de, struct minix_sb_info *sbi)
diff --git a/fs/nilfs2/btree.h b/fs/nilfs2/btree.h
index af638d59e3b..43c8c5b541f 100644
--- a/fs/nilfs2/btree.h
+++ b/fs/nilfs2/btree.h
@@ -75,8 +75,6 @@ struct nilfs_btree_path {
extern struct kmem_cache *nilfs_btree_path_cache;
-int nilfs_btree_path_cache_init(void);
-void nilfs_btree_path_cache_destroy(void);
int nilfs_btree_init(struct nilfs_bmap *);
int nilfs_btree_convert_and_insert(struct nilfs_bmap *, __u64, __u64,
const __u64 *, const __u64 *, int);
diff --git a/fs/nilfs2/segbuf.h b/fs/nilfs2/segbuf.h
index fdf1c3b6d67..85fbb66455e 100644
--- a/fs/nilfs2/segbuf.h
+++ b/fs/nilfs2/segbuf.h
@@ -127,8 +127,6 @@ struct nilfs_segment_buffer {
extern struct kmem_cache *nilfs_segbuf_cachep;
-int __init nilfs_init_segbuf_cache(void);
-void nilfs_destroy_segbuf_cache(void);
struct nilfs_segment_buffer *nilfs_segbuf_new(struct super_block *);
void nilfs_segbuf_free(struct nilfs_segment_buffer *);
void nilfs_segbuf_map(struct nilfs_segment_buffer *, __u64, unsigned long,
diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h
index dca142361cc..01e20dbb217 100644
--- a/fs/nilfs2/segment.h
+++ b/fs/nilfs2/segment.h
@@ -221,8 +221,6 @@ enum {
extern struct kmem_cache *nilfs_transaction_cachep;
/* segment.c */
-extern int nilfs_init_transaction_cache(void);
-extern void nilfs_destroy_transaction_cache(void);
extern void nilfs_relax_pressure_in_lock(struct super_block *);
extern int nilfs_construct_segment(struct super_block *);
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 03b34b73899..414ef68931c 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -1130,13 +1130,13 @@ static void nilfs_segbuf_init_once(void *obj)
static void nilfs_destroy_cachep(void)
{
- if (nilfs_inode_cachep)
+ if (nilfs_inode_cachep)
kmem_cache_destroy(nilfs_inode_cachep);
- if (nilfs_transaction_cachep)
+ if (nilfs_transaction_cachep)
kmem_cache_destroy(nilfs_transaction_cachep);
- if (nilfs_segbuf_cachep)
+ if (nilfs_segbuf_cachep)
kmem_cache_destroy(nilfs_segbuf_cachep);
- if (nilfs_btree_path_cache)
+ if (nilfs_btree_path_cache)
kmem_cache_destroy(nilfs_btree_path_cache);
}
diff --git a/fs/pipe.c b/fs/pipe.c
index db6eaaba0dd..69c4c7c13ea 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -26,9 +26,14 @@
/*
* The max size that a non-root user is allowed to grow the pipe. Can
- * be set by root in /proc/sys/fs/pipe-max-pages
+ * be set by root in /proc/sys/fs/pipe-max-size
*/
-unsigned int pipe_max_pages = PIPE_DEF_BUFFERS * 16;
+unsigned int pipe_max_size = 1048576;
+
+/*
+ * Minimum pipe size, as required by POSIX
+ */
+unsigned int pipe_min_size = PAGE_SIZE;
/*
* We use a start+len construction, which provides full use of the
@@ -1118,26 +1123,20 @@ SYSCALL_DEFINE1(pipe, int __user *, fildes)
* Allocate a new array of pipe buffers and copy the info over. Returns the
* pipe size if successful, or return -ERROR on error.
*/
-static long pipe_set_size(struct pipe_inode_info *pipe, unsigned long arg)
+static long pipe_set_size(struct pipe_inode_info *pipe, unsigned long nr_pages)
{
struct pipe_buffer *bufs;
/*
- * Must be a power-of-2 currently
- */
- if (!is_power_of_2(arg))
- return -EINVAL;
-
- /*
* We can shrink the pipe, if arg >= pipe->nrbufs. Since we don't
* expect a lot of shrink+grow operations, just free and allocate
* again like we would do for growing. If the pipe currently
* contains more buffers than arg, then return busy.
*/
- if (arg < pipe->nrbufs)
+ if (nr_pages < pipe->nrbufs)
return -EBUSY;
- bufs = kcalloc(arg, sizeof(struct pipe_buffer), GFP_KERNEL);
+ bufs = kcalloc(nr_pages, sizeof(struct pipe_buffer), GFP_KERNEL);
if (unlikely(!bufs))
return -ENOMEM;
@@ -1158,8 +1157,37 @@ static long pipe_set_size(struct pipe_inode_info *pipe, unsigned long arg)
pipe->curbuf = 0;
kfree(pipe->bufs);
pipe->bufs = bufs;
- pipe->buffers = arg;
- return arg;
+ pipe->buffers = nr_pages;
+ return nr_pages * PAGE_SIZE;
+}
+
+/*
+ * Currently we rely on the pipe array holding a power-of-2 number
+ * of pages.
+ */
+static inline unsigned int round_pipe_size(unsigned int size)
+{
+ unsigned long nr_pages;
+
+ nr_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
+ return roundup_pow_of_two(nr_pages) << PAGE_SHIFT;
+}
+
+/*
+ * This should work even if CONFIG_PROC_FS isn't set, as proc_dointvec_minmax
+ * will return an error.
+ */
+int pipe_proc_fn(struct ctl_table *table, int write, void __user *buf,
+ size_t *lenp, loff_t *ppos)
+{
+ int ret;
+
+ ret = proc_dointvec_minmax(table, write, buf, lenp, ppos);
+ if (ret < 0 || !write)
+ return ret;
+
+ pipe_max_size = round_pipe_size(pipe_max_size);
+ return ret;
}
long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
@@ -1174,23 +1202,24 @@ long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
mutex_lock(&pipe->inode->i_mutex);
switch (cmd) {
- case F_SETPIPE_SZ:
- if (!capable(CAP_SYS_ADMIN) && arg > pipe_max_pages) {
- ret = -EINVAL;
+ case F_SETPIPE_SZ: {
+ unsigned int size, nr_pages;
+
+ size = round_pipe_size(arg);
+ nr_pages = size >> PAGE_SHIFT;
+
+ if (!capable(CAP_SYS_RESOURCE) && size > pipe_max_size) {
+ ret = -EPERM;
goto out;
- }
- /*
- * The pipe needs to be at least 2 pages large to
- * guarantee POSIX behaviour.
- */
- if (arg < 2) {
+ } else if (nr_pages < PAGE_SIZE) {
ret = -EINVAL;
goto out;
}
- ret = pipe_set_size(pipe, arg);
+ ret = pipe_set_size(pipe, nr_pages);
break;
+ }
case F_GETPIPE_SZ:
- ret = pipe->buffers;
+ ret = pipe->buffers * PAGE_SIZE;
break;
default:
ret = -EINVAL;
diff --git a/fs/splice.c b/fs/splice.c
index ac22b00d86c..740e6b9faf7 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -354,7 +354,7 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
break;
error = add_to_page_cache_lru(page, mapping, index,
- mapping_gfp_mask(mapping));
+ GFP_KERNEL);
if (unlikely(error)) {
page_cache_release(page);
if (error == -EEXIST)
diff --git a/fs/sync.c b/fs/sync.c
index c9f83f480ec..15aa6f03b2d 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -42,7 +42,7 @@ static int __sync_filesystem(struct super_block *sb, int wait)
if (wait)
sync_inodes_sb(sb);
else
- writeback_inodes_sb_locked(sb);
+ writeback_inodes_sb(sb);
if (sb->s_op->sync_fs)
sb->s_op->sync_fs(sb, wait);
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index bde1a4c3679..0835a3b70e0 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -117,11 +117,13 @@ int sysfs_setattr(struct dentry *dentry, struct iattr *iattr)
if (error)
goto out;
+ error = sysfs_sd_setattr(sd, iattr);
+ if (error)
+ goto out;
+
/* this ignores size changes */
generic_setattr(inode, iattr);
- error = sysfs_sd_setattr(sd, iattr);
-
out:
mutex_unlock(&sysfs_mutex);
return error;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-01 05:12:57 +0000