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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-04-02 03:17:51 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-04-12 05:28:25 +0300 |
| commit | 070b3656cf228eaaef7b28b59264c5c7cdbdd0fb (patch) | |
| tree | 76040fdba3e0703df0be897aba7310332454d60e /fs/9p/vfs_file.c | |
| parent | 4f3b35c157e43107cc7e1f1aa06694e8b22e10bb (diff) | |
| download | linux-070b3656cf228eaaef7b28b59264c5c7cdbdd0fb.tar.xz | |
9p: switch p9_client_write() to passing it struct iov_iter *
... and make it loop until it's done
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/9p/vfs_file.c')
| -rw-r--r-- | fs/9p/vfs_file.c | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index b40133796b87..75a2bb01420d 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -36,6 +36,7 @@ #include <linux/utsname.h> #include <asm/uaccess.h> #include <linux/idr.h> +#include <linux/uio.h> #include <net/9p/9p.h> #include <net/9p/client.h> @@ -457,24 +458,20 @@ 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; + 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); - do { - n = p9_client_write(fid, NULL, data+total, origin+total, count); - if (n <= 0) - break; - count -= n; - total += n; - } while (count > 0); + 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) @@ -487,10 +484,7 @@ v9fs_file_write_internal(struct inode *inode, struct p9_fid *fid, i_size_write(inode, *offset); } } - if (n < 0) - return n; - - return total; + return total ? total : err; } /** |