From 070b3656cf228eaaef7b28b59264c5c7cdbdd0fb Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 1 Apr 2015 20:17:51 -0400 Subject: 9p: switch p9_client_write() to passing it struct iov_iter * ... and make it loop until it's done Signed-off-by: Al Viro --- fs/9p/xattr.c | 32 +++++++++----------------------- 1 file changed, 9 insertions(+), 23 deletions(-) (limited to 'fs/9p/xattr.c') diff --git a/fs/9p/xattr.c b/fs/9p/xattr.c index f95e01e058e4..d4cab07f668d 100644 --- a/fs/9p/xattr.c +++ b/fs/9p/xattr.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -120,8 +121,11 @@ int v9fs_xattr_set(struct dentry *dentry, const char *name, int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name, const void *value, size_t value_len, int flags) { - u64 offset = 0; - int retval, msize, write_count; + struct kvec kvec = {.iov_base = (void *)value, .iov_len = value_len}; + struct iov_iter from; + int retval; + + iov_iter_kvec(&from, WRITE | ITER_KVEC, &kvec, 1, value_len); p9_debug(P9_DEBUG_VFS, "name = %s value_len = %zu flags = %d\n", name, value_len, flags); @@ -135,29 +139,11 @@ int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name, * On success fid points to xattr */ retval = p9_client_xattrcreate(fid, name, value_len, flags); - if (retval < 0) { + if (retval < 0) p9_debug(P9_DEBUG_VFS, "p9_client_xattrcreate failed %d\n", retval); - goto err; - } - msize = fid->clnt->msize; - while (value_len) { - if (value_len > (msize - P9_IOHDRSZ)) - write_count = msize - P9_IOHDRSZ; - else - write_count = value_len; - write_count = p9_client_write(fid, ((char *)value)+offset, - NULL, offset, write_count); - if (write_count < 0) { - /* error in xattr write */ - retval = write_count; - goto err; - } - offset += write_count; - value_len -= write_count; - } - retval = 0; -err: + else + p9_client_write(fid, 0, &from, &retval); p9_client_clunk(fid); return retval; } -- cgit