diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/9p/v9fs_vfs.h | 2 | ||||
| -rw-r--r-- | fs/9p/vfs_file.c | 77 |
2 files changed, 30 insertions, 49 deletions
diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h index b83ebfbf3fdc..cff1e61d9355 100644 --- a/fs/9p/v9fs_vfs.h +++ b/fs/9p/v9fs_vfs.h @@ -74,8 +74,6 @@ void v9fs_blank_wstat(struct p9_wstat *wstat); int v9fs_vfs_setattr_dotl(struct dentry *, struct iattr *); int v9fs_file_fsync_dotl(struct file *filp, loff_t start, loff_t end, int datasync); -ssize_t v9fs_file_write_internal(struct inode *, struct p9_fid *, - const char __user *, size_t, loff_t *, int); int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode); int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode); static inline void v9fs_invalidate_inode_attr(struct inode *inode) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 75a2bb01420d..a54d81f9097f 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -453,40 +453,6 @@ v9fs_file_read(struct file *filp, char __user *udata, size_t count, return ret; } -ssize_t -v9fs_file_write_internal(struct inode *inode, struct p9_fid *fid, - const char __user *data, size_t count, - loff_t *offset, int invalidate) -{ - loff_t origin = *offset; - struct iovec iov = {.iov_base = (void __user *)data, .iov_len = count}; - struct iov_iter from; - int total, err = 0; - - p9_debug(P9_DEBUG_VFS, "data %p count %d offset %x\n", - data, (int)count, (int)*offset); - - iov_iter_init(&from, WRITE, &iov, 1, count); - - total = p9_client_write(fid, origin, &from, &err); - if (invalidate && (total > 0)) { - loff_t i_size; - unsigned long pg_start, pg_end; - pg_start = origin >> PAGE_CACHE_SHIFT; - pg_end = (origin + total - 1) >> PAGE_CACHE_SHIFT; - if (inode->i_mapping && inode->i_mapping->nrpages) - invalidate_inode_pages2_range(inode->i_mapping, - pg_start, pg_end); - *offset += total; - i_size = i_size_read(inode); - if (*offset > i_size) { - inode_add_bytes(inode, *offset - i_size); - i_size_write(inode, *offset); - } - } - return total ? total : err; -} - /** * v9fs_file_write - write to a file * @filp: file pointer to write @@ -501,27 +467,44 @@ v9fs_file_write(struct file *filp, const char __user * data, { ssize_t retval = 0; loff_t origin = *offset; + struct iovec iov = {.iov_base = (void __user *)data, .iov_len = count}; + struct iov_iter from; + int err = 0; + iov_iter_init(&from, WRITE, &iov, 1, count); retval = generic_write_checks(filp, &origin, &count, 0); if (retval) - goto out; + return retval; + + iov_iter_truncate(&from, count); + + p9_debug(P9_DEBUG_VFS, "data %p count %d offset %x\n", + data, (int)count, (int)*offset); - retval = -EINVAL; - if ((ssize_t) count < 0) - goto out; retval = 0; if (!count) - goto out; + return 0; - retval = v9fs_file_write_internal(file_inode(filp), - filp->private_data, - data, count, &origin, 1); - /* update offset on successful write */ - if (retval > 0) - *offset = origin; -out: - return retval; + retval = p9_client_write(filp->private_data, origin, &from, &err); + if (retval > 0) { + struct inode *inode = file_inode(filp); + loff_t i_size; + unsigned long pg_start, pg_end; + pg_start = origin >> PAGE_CACHE_SHIFT; + pg_end = (origin + retval - 1) >> PAGE_CACHE_SHIFT; + if (inode->i_mapping && inode->i_mapping->nrpages) + invalidate_inode_pages2_range(inode->i_mapping, + pg_start, pg_end); + *offset += retval; + i_size = i_size_read(inode); + if (*offset > i_size) { + inode_add_bytes(inode, *offset - i_size); + i_size_write(inode, *offset); + } + return retval; + } + return err; } |