diff options
| -rw-r--r-- | fs/afs/inode.c | 27 | ||||
| -rw-r--r-- | fs/afs/internal.h | 7 | ||||
| -rw-r--r-- | fs/afs/write.c | 6 |
3 files changed, 35 insertions, 5 deletions
diff --git a/fs/afs/inode.c b/fs/afs/inode.c index e99705474dd1..70c925978d10 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -169,7 +169,7 @@ static void afs_apply_status(struct afs_operation *op, struct timespec64 t; umode_t mode; bool data_changed = false; - bool change_size = false; + bool change_size = vp->set_size; _enter("{%llx:%llu.%u} %s", vp->fid.vid, vp->fid.vnode, vp->fid.unique, @@ -799,7 +799,15 @@ void afs_evict_inode(struct inode *inode) static void afs_setattr_success(struct afs_operation *op) { + struct inode *inode = &op->file[0].vnode->vfs_inode; + afs_vnode_commit_status(op, &op->file[0]); + if (op->setattr.attr->ia_valid & ATTR_SIZE) { + loff_t i_size = inode->i_size, size = op->setattr.attr->ia_size; + if (size > i_size) + pagecache_isize_extended(inode, i_size, size); + truncate_pagecache(inode, size); + } } static const struct afs_operation_ops afs_setattr_operation = { @@ -815,6 +823,7 @@ int afs_setattr(struct dentry *dentry, struct iattr *attr) { struct afs_operation *op; struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry)); + int ret; _enter("{%llx:%llu},{n=%pd},%x", vnode->fid.vid, vnode->fid.vnode, dentry, @@ -827,6 +836,18 @@ int afs_setattr(struct dentry *dentry, struct iattr *attr) return 0; } + if (attr->ia_valid & ATTR_SIZE) { + if (!S_ISREG(vnode->vfs_inode.i_mode)) + return -EISDIR; + + ret = inode_newsize_ok(&vnode->vfs_inode, attr->ia_size); + if (ret) + return ret; + + if (attr->ia_size == i_size_read(&vnode->vfs_inode)) + attr->ia_valid &= ~ATTR_SIZE; + } + /* flush any dirty data outstanding on a regular file */ if (S_ISREG(vnode->vfs_inode.i_mode)) filemap_write_and_wait(vnode->vfs_inode.i_mapping); @@ -840,8 +861,10 @@ int afs_setattr(struct dentry *dentry, struct iattr *attr) afs_op_set_vnode(op, 0, vnode); op->setattr.attr = attr; - if (attr->ia_valid & ATTR_SIZE) + if (attr->ia_valid & ATTR_SIZE) { op->file[0].dv_delta = 1; + op->file[0].set_size = true; + } op->ctime = attr->ia_ctime; op->file[0].update_ctime = 1; diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 92cd6b8cc01f..bdc1e5efebd4 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -744,9 +744,10 @@ struct afs_vnode_param { afs_dataversion_t dv_before; /* Data version before the call */ unsigned int cb_break_before; /* cb_break + cb_s_break before the call */ u8 dv_delta; /* Expected change in data version */ - bool put_vnode; /* T if we have a ref on the vnode */ - bool need_io_lock; /* T if we need the I/O lock on this */ - bool update_ctime; /* Need to update the ctime */ + bool put_vnode:1; /* T if we have a ref on the vnode */ + bool need_io_lock:1; /* T if we need the I/O lock on this */ + bool update_ctime:1; /* Need to update the ctime */ + bool set_size:1; /* Must update i_size */ }; /* diff --git a/fs/afs/write.c b/fs/afs/write.c index 2003d7ee9e43..7437806332d9 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -492,6 +492,7 @@ static int afs_write_back_from_locked_page(struct address_space *mapping, unsigned long count, priv; unsigned n, offset, to, f, t; pgoff_t start, first, last; + loff_t i_size, end; int loop, ret; _enter(",%lx", primary_page->index); @@ -592,7 +593,12 @@ no_more: first = primary_page->index; last = first + count - 1; + end = (loff_t)last * PAGE_SIZE + to; + i_size = i_size_read(&vnode->vfs_inode); + _debug("write back %lx[%u..] to %lx[..%u]", first, offset, last, to); + if (end > i_size) + to = i_size & ~PAGE_MASK; ret = afs_store_data(mapping, first, last, offset, to); switch (ret) { |