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fs/9p: Don't use O_TRUNC flag in TOPEN and TLOPEN request 

We do the truncate via setattr request, hence don't pass the O_TRUNC flag in
open request. Without this patch we end up sending zero sized write request
to server when we try to truncate. Some servers (VirtFS) were not handling that
properly.

Reported-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
This commit is contained in:
Aneesh Kumar K.V 2013-02-05 11:26:28 +05:30 committed by Eric Van Hensbergen
parent 7ffdea7ea3
commit 03f0e02273
3 changed files with 0 additions and 8 deletions
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4
fs/9p/vfs_file.c
View File

@ -80,10 +80,6 @@ int v9fs_file_open(struct inode *inode, struct file *file)
p9_client_clunk(fid);
return err;
}
if (file->f_flags & O_TRUNC) {
i_size_write(inode, 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);

3
fs/9p/vfs_inode.c
View File

@ -192,9 +192,6 @@ int v9fs_uflags2omode(int uflags, int extended)
break;
}
if (uflags & O_TRUNC)
ret |= P9_OTRUNC;
if (extended) {
if (uflags & O_EXCL)
ret |= P9_OEXCL;

1
fs/9p/vfs_inode_dotl.c
View File

@ -186,7 +186,6 @@ static int v9fs_mapped_dotl_flags(int flags)
{ O_CREAT, P9_DOTL_CREATE },
{ O_EXCL, P9_DOTL_EXCL },
{ O_NOCTTY, P9_DOTL_NOCTTY },
{ O_TRUNC, P9_DOTL_TRUNC },
{ O_APPEND, P9_DOTL_APPEND },
{ O_NONBLOCK, P9_DOTL_NONBLOCK },
{ O_DSYNC, P9_DOTL_DSYNC },