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authorJ. Bruce Fields <bfields@redhat.com>2014-03-07 20:43:58 +0400
committerJ. Bruce Fields <bfields@redhat.com>2014-05-23 17:03:41 +0400
commit5b648699afa00de0cfe679a4733bef593faaa3a4 (patch)
treec60dbf743e7ced76cb7b33d16526786d44d4697f /fs/nfsd
parent8658452e4a588da603f6cb5ee2615deafcd82b71 (diff)
downloadlinux-5b648699afa00de0cfe679a4733bef593faaa3a4.tar.xz
nfsd4: READ, READDIR, etc., are idempotent
OP_MODIFIES_SOMETHING flags operations that we should be careful not to initiate without being sure we have the buffer space to encode a reply. None of these ops fall into that category. We could probably remove a few more, but this isn't a very important problem at least for ops whose reply size is easy to estimate. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4proc.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index ac837783b37d..2c1ee70b730f 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1665,37 +1665,32 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_PUTFH] = {
.op_func = (nfsd4op_func)nfsd4_putfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
- | OP_CLEAR_STATEID,
+ | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
.op_name = "OP_PUTFH",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_PUTPUBFH] = {
.op_func = (nfsd4op_func)nfsd4_putrootfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
- | OP_CLEAR_STATEID,
+ | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
.op_name = "OP_PUTPUBFH",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_PUTROOTFH] = {
.op_func = (nfsd4op_func)nfsd4_putrootfh,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
- | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
- | OP_CLEAR_STATEID,
+ | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
.op_name = "OP_PUTROOTFH",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
[OP_READ] = {
.op_func = (nfsd4op_func)nfsd4_read,
- .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_READ",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
.op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
},
[OP_READDIR] = {
.op_func = (nfsd4op_func)nfsd4_readdir,
- .op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_READDIR",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
},