diff options
Diffstat (limited to 'fs/9p/vfs_file.c')
| -rw-r--r-- | fs/9p/vfs_file.c | 809 |
1 files changed, 764 insertions, 45 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index a616fff8906..520c11c2dcc 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -32,6 +32,8 @@ #include <linux/string.h> #include <linux/inet.h> #include <linux/list.h> +#include <linux/pagemap.h> +#include <linux/utsname.h> #include <asm/uaccess.h> #include <linux/idr.h> #include <net/9p/9p.h> @@ -40,8 +42,10 @@ #include "v9fs.h" #include "v9fs_vfs.h" #include "fid.h" +#include "cache.h" -static const struct file_operations v9fs_cached_file_operations; +static const struct vm_operations_struct v9fs_file_vm_ops; +static const struct vm_operations_struct v9fs_mmap_file_vm_ops; /** * v9fs_file_open - open a file (or directory) @@ -53,13 +57,19 @@ static const struct file_operations v9fs_cached_file_operations; int v9fs_file_open(struct inode *inode, struct file *file) { int err; + struct v9fs_inode *v9inode; struct v9fs_session_info *v9ses; struct p9_fid *fid; int omode; - P9_DPRINTK(P9_DEBUG_VFS, "inode: %p file: %p \n", inode, file); + p9_debug(P9_DEBUG_VFS, "inode: %p file: %p\n", inode, file); + v9inode = V9FS_I(inode); v9ses = v9fs_inode2v9ses(inode); - omode = v9fs_uflags2omode(file->f_flags); + if (v9fs_proto_dotl(v9ses)) + omode = v9fs_open_to_dotl_flags(file->f_flags); + else + omode = v9fs_uflags2omode(file->f_flags, + v9fs_proto_dotu(v9ses)); fid = file->private_data; if (!fid) { fid = v9fs_fid_clone(file->f_path.dentry); @@ -71,41 +81,60 @@ int v9fs_file_open(struct inode *inode, struct file *file) p9_client_clunk(fid); return err; } - if (omode & P9_OTRUNC) { - inode->i_size = 0; - inode->i_blocks = 0; - } + if ((file->f_flags & O_APPEND) && + (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses))) + generic_file_llseek(file, 0, SEEK_END); } file->private_data = fid; - if ((fid->qid.version) && (v9ses->cache)) { - P9_DPRINTK(P9_DEBUG_VFS, "cached"); - /* enable cached file options */ - if(file->f_op == &v9fs_file_operations) - file->f_op = &v9fs_cached_file_operations; + mutex_lock(&v9inode->v_mutex); + if ((v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) && + !v9inode->writeback_fid && + ((file->f_flags & O_ACCMODE) != O_RDONLY)) { + /* + * clone a fid and add it to writeback_fid + * we do it during open time instead of + * page dirty time via write_begin/page_mkwrite + * because we want write after unlink usecase + * to work. + */ + fid = v9fs_writeback_fid(file->f_path.dentry); + if (IS_ERR(fid)) { + err = PTR_ERR(fid); + mutex_unlock(&v9inode->v_mutex); + goto out_error; + } + v9inode->writeback_fid = (void *) fid; } - + mutex_unlock(&v9inode->v_mutex); + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) + v9fs_cache_inode_set_cookie(inode, file); return 0; +out_error: + p9_client_clunk(file->private_data); + file->private_data = NULL; + return err; } /** * v9fs_file_lock - lock a file (or directory) - * @inode: inode to be opened - * @file: file being opened + * @filp: file to be locked + * @cmd: lock command + * @fl: file lock structure * - * XXX - this looks like a local only lock, we should extend into 9P + * Bugs: this looks like a local only lock, we should extend into 9P * by using open exclusive */ static int v9fs_file_lock(struct file *filp, int cmd, struct file_lock *fl) { int res = 0; - struct inode *inode = filp->f_path.dentry->d_inode; + struct inode *inode = file_inode(filp); - P9_DPRINTK(P9_DEBUG_VFS, "filp: %p lock: %p\n", filp, fl); + p9_debug(P9_DEBUG_VFS, "filp: %p lock: %p\n", filp, fl); /* No mandatory locks */ - if (__mandatory_lock(inode)) + if (__mandatory_lock(inode) && fl->fl_type != F_UNLCK) return -ENOLCK; if ((IS_SETLK(cmd) || IS_SETLKW(cmd)) && fl->fl_type != F_UNLCK) { @@ -116,75 +145,729 @@ static int v9fs_file_lock(struct file *filp, int cmd, struct file_lock *fl) return res; } +static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl) +{ + struct p9_flock flock; + struct p9_fid *fid; + uint8_t status; + int res = 0; + unsigned char fl_type; + + fid = filp->private_data; + BUG_ON(fid == NULL); + + if ((fl->fl_flags & FL_POSIX) != FL_POSIX) + BUG(); + + res = posix_lock_file_wait(filp, fl); + if (res < 0) + goto out; + + /* convert posix lock to p9 tlock args */ + memset(&flock, 0, sizeof(flock)); + /* map the lock type */ + switch (fl->fl_type) { + case F_RDLCK: + flock.type = P9_LOCK_TYPE_RDLCK; + break; + case F_WRLCK: + flock.type = P9_LOCK_TYPE_WRLCK; + break; + case F_UNLCK: + flock.type = P9_LOCK_TYPE_UNLCK; + break; + } + flock.start = fl->fl_start; + if (fl->fl_end == OFFSET_MAX) + flock.length = 0; + else + flock.length = fl->fl_end - fl->fl_start + 1; + flock.proc_id = fl->fl_pid; + flock.client_id = fid->clnt->name; + if (IS_SETLKW(cmd)) + flock.flags = P9_LOCK_FLAGS_BLOCK; + + /* + * if its a blocked request and we get P9_LOCK_BLOCKED as the status + * for lock request, keep on trying + */ + for (;;) { + res = p9_client_lock_dotl(fid, &flock, &status); + if (res < 0) + break; + + if (status != P9_LOCK_BLOCKED) + break; + if (status == P9_LOCK_BLOCKED && !IS_SETLKW(cmd)) + break; + if (schedule_timeout_interruptible(P9_LOCK_TIMEOUT) != 0) + break; + } + + /* map 9p status to VFS status */ + switch (status) { + case P9_LOCK_SUCCESS: + res = 0; + break; + case P9_LOCK_BLOCKED: + res = -EAGAIN; + break; + case P9_LOCK_ERROR: + case P9_LOCK_GRACE: + res = -ENOLCK; + break; + default: + BUG(); + } + + /* + * incase server returned error for lock request, revert + * it locally + */ + if (res < 0 && fl->fl_type != F_UNLCK) { + fl_type = fl->fl_type; + fl->fl_type = F_UNLCK; + res = posix_lock_file_wait(filp, fl); + fl->fl_type = fl_type; + } +out: + return res; +} + +static int v9fs_file_getlock(struct file *filp, struct file_lock *fl) +{ + struct p9_getlock glock; + struct p9_fid *fid; + int res = 0; + + fid = filp->private_data; + BUG_ON(fid == NULL); + + posix_test_lock(filp, fl); + /* + * if we have a conflicting lock locally, no need to validate + * with server + */ + if (fl->fl_type != F_UNLCK) + return res; + + /* convert posix lock to p9 tgetlock args */ + memset(&glock, 0, sizeof(glock)); + glock.type = P9_LOCK_TYPE_UNLCK; + glock.start = fl->fl_start; + if (fl->fl_end == OFFSET_MAX) + glock.length = 0; + else + glock.length = fl->fl_end - fl->fl_start + 1; + glock.proc_id = fl->fl_pid; + glock.client_id = fid->clnt->name; + + res = p9_client_getlock_dotl(fid, &glock); + if (res < 0) + return res; + /* map 9p lock type to os lock type */ + switch (glock.type) { + case P9_LOCK_TYPE_RDLCK: + fl->fl_type = F_RDLCK; + break; + case P9_LOCK_TYPE_WRLCK: + fl->fl_type = F_WRLCK; + break; + case P9_LOCK_TYPE_UNLCK: + fl->fl_type = F_UNLCK; + break; + } + if (glock.type != P9_LOCK_TYPE_UNLCK) { + fl->fl_start = glock.start; + if (glock.length == 0) + fl->fl_end = OFFSET_MAX; + else + fl->fl_end = glock.start + glock.length - 1; + fl->fl_pid = glock.proc_id; + } + return res; +} + /** - * v9fs_file_read - read from a file - * @filep: file pointer to read + * v9fs_file_lock_dotl - lock a file (or directory) + * @filp: file to be locked + * @cmd: lock command + * @fl: file lock structure + * + */ + +static int v9fs_file_lock_dotl(struct file *filp, int cmd, struct file_lock *fl) +{ + struct inode *inode = file_inode(filp); + int ret = -ENOLCK; + + p9_debug(P9_DEBUG_VFS, "filp: %p cmd:%d lock: %p name: %s\n", + filp, cmd, fl, filp->f_path.dentry->d_name.name); + + /* No mandatory locks */ + if (__mandatory_lock(inode) && fl->fl_type != F_UNLCK) + goto out_err; + + if ((IS_SETLK(cmd) || IS_SETLKW(cmd)) && fl->fl_type != F_UNLCK) { + filemap_write_and_wait(inode->i_mapping); + invalidate_mapping_pages(&inode->i_data, 0, -1); + } + + if (IS_SETLK(cmd) || IS_SETLKW(cmd)) + ret = v9fs_file_do_lock(filp, cmd, fl); + else if (IS_GETLK(cmd)) + ret = v9fs_file_getlock(filp, fl); + else + ret = -EINVAL; +out_err: + return ret; +} + +/** + * v9fs_file_flock_dotl - lock a file + * @filp: file to be locked + * @cmd: lock command + * @fl: file lock structure + * + */ + +static int v9fs_file_flock_dotl(struct file *filp, int cmd, + struct file_lock *fl) +{ + struct inode *inode = file_inode(filp); + int ret = -ENOLCK; + + p9_debug(P9_DEBUG_VFS, "filp: %p cmd:%d lock: %p name: %s\n", + filp, cmd, fl, filp->f_path.dentry->d_name.name); + + /* No mandatory locks */ + if (__mandatory_lock(inode) && fl->fl_type != F_UNLCK) + goto out_err; + + if (!(fl->fl_flags & FL_FLOCK)) + goto out_err; + + if ((IS_SETLK(cmd) || IS_SETLKW(cmd)) && fl->fl_type != F_UNLCK) { + filemap_write_and_wait(inode->i_mapping); + invalidate_mapping_pages(&inode->i_data, 0, -1); + } + /* Convert flock to posix lock */ + fl->fl_flags |= FL_POSIX; + fl->fl_flags ^= FL_FLOCK; + + if (IS_SETLK(cmd) | IS_SETLKW(cmd)) + ret = v9fs_file_do_lock(filp, cmd, fl); + else + ret = -EINVAL; +out_err: + return ret; +} + +/** + * v9fs_fid_readn - read from a fid + * @fid: fid to read * @data: data buffer to read data into + * @udata: user data buffer to read data into + * @count: size of buffer + * @offset: offset at which to read data + * + */ +ssize_t +v9fs_fid_readn(struct p9_fid *fid, char *data, char __user *udata, u32 count, + u64 offset) +{ + int n, total, size; + + p9_debug(P9_DEBUG_VFS, "fid %d offset %llu count %d\n", + fid->fid, (long long unsigned)offset, count); + n = 0; + total = 0; + size = fid->iounit ? fid->iounit : fid->clnt->msize - P9_IOHDRSZ; + do { + n = p9_client_read(fid, data, udata, offset, count); + if (n <= 0) + break; + + if (data) + data += n; + if (udata) + udata += n; + + offset += n; + count -= n; + total += n; + } while (count > 0 && n == size); + + if (n < 0) + total = n; + + return total; +} + +/** + * v9fs_file_readn - read from a file + * @filp: file pointer to read + * @data: data buffer to read data into + * @udata: user data buffer to read data into + * @count: size of buffer + * @offset: offset at which to read data + * + */ +ssize_t +v9fs_file_readn(struct file *filp, char *data, char __user *udata, u32 count, + u64 offset) +{ + return v9fs_fid_readn(filp->private_data, data, udata, count, offset); +} + +/** + * v9fs_file_read - read from a file + * @filp: file pointer to read + * @udata: user data buffer to read data into * @count: size of buffer * @offset: offset at which to read data * */ + static ssize_t -v9fs_file_read(struct file *filp, char __user * data, size_t count, +v9fs_file_read(struct file *filp, char __user *udata, size_t count, loff_t * offset) { int ret; struct p9_fid *fid; + size_t size; - P9_DPRINTK(P9_DEBUG_VFS, "\n"); + p9_debug(P9_DEBUG_VFS, "count %zu offset %lld\n", count, *offset); fid = filp->private_data; - ret = p9_client_uread(fid, data, *offset, count); + + size = fid->iounit ? fid->iounit : fid->clnt->msize - P9_IOHDRSZ; + if (count > size) + ret = v9fs_file_readn(filp, NULL, udata, count, *offset); + else + ret = p9_client_read(fid, NULL, udata, *offset, count); + if (ret > 0) *offset += ret; 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) +{ + int n; + loff_t i_size; + size_t total = 0; + loff_t origin = *offset; + unsigned long pg_start, pg_end; + + p9_debug(P9_DEBUG_VFS, "data %p count %d offset %x\n", + data, (int)count, (int)*offset); + + do { + n = p9_client_write(fid, NULL, data+total, origin+total, count); + if (n <= 0) + break; + count -= n; + total += n; + } while (count > 0); + + if (invalidate && (total > 0)) { + 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); + } + } + if (n < 0) + return n; + + return total; +} + /** * v9fs_file_write - write to a file - * @filep: file pointer to write + * @filp: file pointer to write * @data: data buffer to write data from * @count: size of buffer * @offset: offset at which to write data * */ - static ssize_t v9fs_file_write(struct file *filp, const char __user * data, - size_t count, loff_t * offset) + size_t count, loff_t *offset) +{ + ssize_t retval = 0; + loff_t origin = *offset; + + + retval = generic_write_checks(filp, &origin, &count, 0); + if (retval) + goto out; + + retval = -EINVAL; + if ((ssize_t) count < 0) + goto out; + retval = 0; + if (!count) + goto out; + + 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; +} + + +static int v9fs_file_fsync(struct file *filp, loff_t start, loff_t end, + int datasync) { - int ret; struct p9_fid *fid; - struct inode *inode = filp->f_path.dentry->d_inode; + struct inode *inode = filp->f_mapping->host; + struct p9_wstat wstat; + int retval; - P9_DPRINTK(P9_DEBUG_VFS, "data %p count %d offset %x\n", data, - (int)count, (int)*offset); + retval = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (retval) + return retval; + + mutex_lock(&inode->i_mutex); + p9_debug(P9_DEBUG_VFS, "filp %p datasync %x\n", filp, datasync); fid = filp->private_data; - ret = p9_client_uwrite(fid, data, *offset, count); - if (ret > 0) { - invalidate_inode_pages2_range(inode->i_mapping, *offset, - *offset+ret); - *offset += ret; + v9fs_blank_wstat(&wstat); + + retval = p9_client_wstat(fid, &wstat); + mutex_unlock(&inode->i_mutex); + + return retval; +} + +int v9fs_file_fsync_dotl(struct file *filp, loff_t start, loff_t end, + int datasync) +{ + struct p9_fid *fid; + struct inode *inode = filp->f_mapping->host; + int retval; + + retval = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (retval) + return retval; + + mutex_lock(&inode->i_mutex); + p9_debug(P9_DEBUG_VFS, "filp %p datasync %x\n", filp, datasync); + + fid = filp->private_data; + + retval = p9_client_fsync(fid, datasync); + mutex_unlock(&inode->i_mutex); + + return retval; +} + +static int +v9fs_file_mmap(struct file *filp, struct vm_area_struct *vma) +{ + int retval; + + + retval = generic_file_mmap(filp, vma); + if (!retval) + vma->vm_ops = &v9fs_file_vm_ops; + + return retval; +} + +static int +v9fs_mmap_file_mmap(struct file *filp, struct vm_area_struct *vma) +{ + int retval; + struct inode *inode; + struct v9fs_inode *v9inode; + struct p9_fid *fid; + + inode = file_inode(filp); + v9inode = V9FS_I(inode); + mutex_lock(&v9inode->v_mutex); + if (!v9inode->writeback_fid && + (vma->vm_flags & VM_WRITE)) { + /* + * clone a fid and add it to writeback_fid + * we do it during mmap instead of + * page dirty time via write_begin/page_mkwrite + * because we want write after unlink usecase + * to work. + */ + fid = v9fs_writeback_fid(filp->f_path.dentry); + if (IS_ERR(fid)) { + retval = PTR_ERR(fid); + mutex_unlock(&v9inode->v_mutex); + return retval; + } + v9inode->writeback_fid = (void *) fid; } + mutex_unlock(&v9inode->v_mutex); + + retval = generic_file_mmap(filp, vma); + if (!retval) + vma->vm_ops = &v9fs_mmap_file_vm_ops; + + return retval; +} + +static int +v9fs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + struct v9fs_inode *v9inode; + struct page *page = vmf->page; + struct file *filp = vma->vm_file; + struct inode *inode = file_inode(filp); + + + p9_debug(P9_DEBUG_VFS, "page %p fid %lx\n", + page, (unsigned long)filp->private_data); + + /* Update file times before taking page lock */ + file_update_time(filp); + + v9inode = V9FS_I(inode); + /* make sure the cache has finished storing the page */ + v9fs_fscache_wait_on_page_write(inode, page); + BUG_ON(!v9inode->writeback_fid); + lock_page(page); + if (page->mapping != inode->i_mapping) + goto out_unlock; + wait_for_stable_page(page); + + return VM_FAULT_LOCKED; +out_unlock: + unlock_page(page); + return VM_FAULT_NOPAGE; +} + +static ssize_t +v9fs_direct_read(struct file *filp, char __user *udata, size_t count, + loff_t *offsetp) +{ + loff_t size, offset; + struct inode *inode; + struct address_space *mapping; + + offset = *offsetp; + mapping = filp->f_mapping; + inode = mapping->host; + if (!count) + return 0; + size = i_size_read(inode); + if (offset < size) + filemap_write_and_wait_range(mapping, offset, + offset + count - 1); + + return v9fs_file_read(filp, udata, count, offsetp); +} + +/** + * v9fs_cached_file_read - read from a file + * @filp: file pointer to read + * @data: user data buffer to read data into + * @count: size of buffer + * @offset: offset at which to read data + * + */ +static ssize_t +v9fs_cached_file_read(struct file *filp, char __user *data, size_t count, + loff_t *offset) +{ + if (filp->f_flags & O_DIRECT) + return v9fs_direct_read(filp, data, count, offset); + return new_sync_read(filp, data, count, offset); +} - if (*offset > inode->i_size) { - inode->i_size = *offset; - inode->i_blocks = (inode->i_size + 512 - 1) >> 9; +/** + * v9fs_mmap_file_read - read from a file + * @filp: file pointer to read + * @data: user data buffer to read data into + * @count: size of buffer + * @offset: offset at which to read data + * + */ +static ssize_t +v9fs_mmap_file_read(struct file *filp, char __user *data, size_t count, + loff_t *offset) +{ + /* TODO: Check if there are dirty pages */ + return v9fs_file_read(filp, data, count, offset); +} + +static ssize_t +v9fs_direct_write(struct file *filp, const char __user * data, + size_t count, loff_t *offsetp) +{ + loff_t offset; + ssize_t retval; + struct inode *inode; + struct address_space *mapping; + + offset = *offsetp; + mapping = filp->f_mapping; + inode = mapping->host; + if (!count) + return 0; + + mutex_lock(&inode->i_mutex); + retval = filemap_write_and_wait_range(mapping, offset, + offset + count - 1); + if (retval) + goto err_out; + /* + * After a write we want buffered reads to be sure to go to disk to get + * the new data. We invalidate clean cached page from the region we're + * about to write. We do this *before* the write so that if we fail + * here we fall back to buffered write + */ + if (mapping->nrpages) { + pgoff_t pg_start = offset >> PAGE_CACHE_SHIFT; + pgoff_t pg_end = (offset + count - 1) >> PAGE_CACHE_SHIFT; + + retval = invalidate_inode_pages2_range(mapping, + pg_start, pg_end); + /* + * If a page can not be invalidated, fall back + * to buffered write. + */ + if (retval) { + if (retval == -EBUSY) + goto buff_write; + goto err_out; + } } + retval = v9fs_file_write(filp, data, count, offsetp); +err_out: + mutex_unlock(&inode->i_mutex); + return retval; - return ret; +buff_write: + mutex_unlock(&inode->i_mutex); + return new_sync_write(filp, data, count, offsetp); +} + +/** + * v9fs_cached_file_write - write to a file + * @filp: file pointer to write + * @data: data buffer to write data from + * @count: size of buffer + * @offset: offset at which to write data + * + */ +static ssize_t +v9fs_cached_file_write(struct file *filp, const char __user * data, + size_t count, loff_t *offset) +{ + + if (filp->f_flags & O_DIRECT) + return v9fs_direct_write(filp, data, count, offset); + return new_sync_write(filp, data, count, offset); } -static const struct file_operations v9fs_cached_file_operations = { + +/** + * v9fs_mmap_file_write - write to a file + * @filp: file pointer to write + * @data: data buffer to write data from + * @count: size of buffer + * @offset: offset at which to write data + * + */ +static ssize_t +v9fs_mmap_file_write(struct file *filp, const char __user *data, + size_t count, loff_t *offset) +{ + /* + * TODO: invalidate mmaps on filp's inode between + * offset and offset+count + */ + return v9fs_file_write(filp, data, count, offset); +} + +static void v9fs_mmap_vm_close(struct vm_area_struct *vma) +{ + struct inode *inode; + + struct writeback_control wbc = { + .nr_to_write = LONG_MAX, + .sync_mode = WB_SYNC_ALL, + .range_start = vma->vm_pgoff * PAGE_SIZE, + /* absolute end, byte at end included */ + .range_end = vma->vm_pgoff * PAGE_SIZE + + (vma->vm_end - vma->vm_start - 1), + }; + + + p9_debug(P9_DEBUG_VFS, "9p VMA close, %p, flushing", vma); + + inode = file_inode(vma->vm_file); + + if (!mapping_cap_writeback_dirty(inode->i_mapping)) + wbc.nr_to_write = 0; + + might_sleep(); + sync_inode(inode, &wbc); +} + + +static const struct vm_operations_struct v9fs_file_vm_ops = { + .fault = filemap_fault, + .map_pages = filemap_map_pages, + .page_mkwrite = v9fs_vm_page_mkwrite, + .remap_pages = generic_file_remap_pages, +}; + +static const struct vm_operations_struct v9fs_mmap_file_vm_ops = { + .close = v9fs_mmap_vm_close, + .fault = filemap_fault, + .map_pages = filemap_map_pages, + .page_mkwrite = v9fs_vm_page_mkwrite, + .remap_pages = generic_file_remap_pages, +}; + + +const struct file_operations v9fs_cached_file_operations = { .llseek = generic_file_llseek, - .read = do_sync_read, - .aio_read = generic_file_aio_read, - .write = v9fs_file_write, + .read = v9fs_cached_file_read, + .write = v9fs_cached_file_write, + .read_iter = generic_file_read_iter, + .write_iter = generic_file_write_iter, .open = v9fs_file_open, .release = v9fs_dir_release, .lock = v9fs_file_lock, - .mmap = generic_file_readonly_mmap, + .mmap = v9fs_file_mmap, + .fsync = v9fs_file_fsync, +}; + +const struct file_operations v9fs_cached_file_operations_dotl = { + .llseek = generic_file_llseek, + .read = v9fs_cached_file_read, + .write = v9fs_cached_file_write, + .read_iter = generic_file_read_iter, + .write_iter = generic_file_write_iter, + .open = v9fs_file_open, + .release = v9fs_dir_release, + .lock = v9fs_file_lock_dotl, + .flock = v9fs_file_flock_dotl, + .mmap = v9fs_file_mmap, + .fsync = v9fs_file_fsync_dotl, }; const struct file_operations v9fs_file_operations = { @@ -195,4 +878,40 @@ const struct file_operations v9fs_file_operations = { .release = v9fs_dir_release, .lock = v9fs_file_lock, .mmap = generic_file_readonly_mmap, + .fsync = v9fs_file_fsync, +}; + +const struct file_operations v9fs_file_operations_dotl = { + .llseek = generic_file_llseek, + .read = v9fs_file_read, + .write = v9fs_file_write, + .open = v9fs_file_open, + .release = v9fs_dir_release, + .lock = v9fs_file_lock_dotl, + .flock = v9fs_file_flock_dotl, + .mmap = generic_file_readonly_mmap, + .fsync = v9fs_file_fsync_dotl, +}; + +const struct file_operations v9fs_mmap_file_operations = { + .llseek = generic_file_llseek, + .read = v9fs_mmap_file_read, + .write = v9fs_mmap_file_write, + .open = v9fs_file_open, + .release = v9fs_dir_release, + .lock = v9fs_file_lock, + .mmap = v9fs_mmap_file_mmap, + .fsync = v9fs_file_fsync, +}; + +const struct file_operations v9fs_mmap_file_operations_dotl = { + .llseek = generic_file_llseek, + .read = v9fs_mmap_file_read, + .write = v9fs_mmap_file_write, + .open = v9fs_file_open, + .release = v9fs_dir_release, + .lock = v9fs_file_lock_dotl, + .flock = v9fs_file_flock_dotl, + .mmap = v9fs_mmap_file_mmap, + .fsync = v9fs_file_fsync_dotl, }; |