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fs: convert simple fs to new truncate 

Convert simple filesystems: ramfs, configfs, sysfs, block_dev to new truncate
sequence.

Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Nick Piggin 2010-05-27 22:42:19 +10:00 committed by Al Viro
parent 15c6fd9786
commit 3322e79a38
5 changed files with 17 additions and 21 deletions
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9
fs/block_dev.c
View File

@ -172,8 +172,9 @@ blkdev_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
return blockdev_direct_IO_no_locking(rw, iocb, inode, I_BDEV(inode),
iov, offset, nr_segs, blkdev_get_blocks, NULL);
return blockdev_direct_IO_no_locking_newtrunc(rw, iocb, inode,
I_BDEV(inode), iov, offset, nr_segs,
blkdev_get_blocks, NULL);
}
int __sync_blockdev(struct block_device *bdev, int wait)
@ -309,8 +310,8 @@ static int blkdev_write_begin(struct file *file, struct address_space *mapping,
struct page **pagep, void **fsdata)
{
*pagep = NULL;
return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
blkdev_get_block);
return block_write_begin_newtrunc(file, mapping, pos, len, flags,
pagep, fsdata, blkdev_get_block);
}
static int blkdev_write_end(struct file *file, struct address_space *mapping,

13
fs/configfs/inode.c
View File

@ -72,16 +72,11 @@ 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;
error = inode_change_ok(inode, iattr);
if (error)
return error;
error = inode_setattr(inode, iattr);
if (error)
return error;
if (!sd_iattr) {
/* setting attributes for the first time, allocate now */
sd_iattr = kzalloc(sizeof(struct iattr), GFP_KERNEL);

1
fs/ramfs/file-mmu.c
View File

@ -50,5 +50,6 @@ const struct file_operations ramfs_file_operations = {
};
const struct inode_operations ramfs_file_inode_operations = {
.setattr = simple_setattr,
.getattr = simple_getattr,
};

7
fs/ramfs/file-nommu.c
View File

@ -146,7 +146,7 @@ static int ramfs_nommu_resize(struct inode *inode, loff_t newsize, loff_t size)
return ret;
}
ret = vmtruncate(inode, newsize);
ret = simple_setsize(inode, newsize);
return ret;
}
@ -169,7 +169,8 @@ static int ramfs_nommu_setattr(struct dentry *dentry, struct iattr *ia)
/* pick out size-changing events */
if (ia->ia_valid & ATTR_SIZE) {
loff_t size = i_size_read(inode);
loff_t size = inode->i_size;
if (ia->ia_size != size) {
ret = ramfs_nommu_resize(inode, ia->ia_size, size);
if (ret < 0 || ia->ia_valid == ATTR_SIZE)
@ -182,7 +183,7 @@ static int ramfs_nommu_setattr(struct dentry *dentry, struct iattr *ia)
}
}
ret = inode_setattr(inode, ia);
generic_setattr(inode, ia);
out:
ia->ia_valid = old_ia_valid;
return ret;

8
fs/sysfs/inode.c
View File

@ -117,13 +117,11 @@ int sysfs_setattr(struct dentry *dentry, struct iattr *iattr)
if (error)
goto out;
iattr->ia_valid &= ~ATTR_SIZE; /* ignore size changes */
error = inode_setattr(inode, 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;