2021-12-27 19:47:23

by Trond Myklebust

[permalink] [raw]
Subject: [PATCH 1/2] NFSv4: Allow writebacks to request 'blocks used'

From: Trond Myklebust <[email protected]>

When doing a non-pNFS write, allow the writeback code to specify that it
also needs to update 'blocks used'.

Signed-off-by: Trond Myklebust <[email protected]>
---
fs/nfs/nfs4_fs.h | 2 ++
fs/nfs/nfs4proc.c | 21 +++++++--------------
2 files changed, 9 insertions(+), 14 deletions(-)

diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index ed5eaca6801e..89076dd32334 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -315,6 +315,8 @@ extern int nfs4_set_rw_stateid(nfs4_stateid *stateid,
const struct nfs_open_context *ctx,
const struct nfs_lock_context *l_ctx,
fmode_t fmode);
+extern void nfs4_bitmask_set(__u32 bitmask[], const __u32 src[],
+ struct inode *inode, unsigned long cache_validity);
extern int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fattr *fattr, struct inode *inode);
extern int update_open_stateid(struct nfs4_state *state,
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 535436dbdc9a..ad6076ca7f1e 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -108,10 +108,6 @@ static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *,
static int nfs41_free_stateid(struct nfs_server *, const nfs4_stateid *,
const struct cred *, bool);
#endif
-static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ],
- const __u32 *src, struct inode *inode,
- struct nfs_server *server,
- struct nfs4_label *label);

#ifdef CONFIG_NFS_V4_SECURITY_LABEL
static inline struct nfs4_label *
@@ -3669,7 +3665,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
if (!nfs4_have_delegation(inode, FMODE_READ)) {
nfs4_bitmask_set(calldata->arg.bitmask_store,
server->cache_consistency_bitmask,
- inode, server, NULL);
+ inode, 0);
calldata->arg.bitmask = calldata->arg.bitmask_store;
} else
calldata->arg.bitmask = NULL;
@@ -5421,14 +5417,14 @@ bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr)
return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
}

-static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], const __u32 *src,
- struct inode *inode, struct nfs_server *server,
- struct nfs4_label *label)
+void nfs4_bitmask_set(__u32 bitmask[], const __u32 src[],
+ struct inode *inode, unsigned long cache_validity)
{
- unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
+ struct nfs_server *server = NFS_SERVER(inode);
unsigned int i;

memcpy(bitmask, src, sizeof(*bitmask) * NFS4_BITMASK_SZ);
+ cache_validity |= READ_ONCE(NFS_I(inode)->cache_validity);

if (cache_validity & NFS_INO_INVALID_CHANGE)
bitmask[0] |= FATTR4_WORD0_CHANGE;
@@ -5440,8 +5436,6 @@ static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], const __u32 *src,
bitmask[1] |= FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP;
if (cache_validity & NFS_INO_INVALID_NLINK)
bitmask[1] |= FATTR4_WORD1_NUMLINKS;
- if (label && label->len && cache_validity & NFS_INO_INVALID_LABEL)
- bitmask[2] |= FATTR4_WORD2_SECURITY_LABEL;
if (cache_validity & NFS_INO_INVALID_CTIME)
bitmask[1] |= FATTR4_WORD1_TIME_METADATA;
if (cache_validity & NFS_INO_INVALID_MTIME)
@@ -5468,7 +5462,7 @@ static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr,
} else {
nfs4_bitmask_set(hdr->args.bitmask_store,
server->cache_consistency_bitmask,
- hdr->inode, server, NULL);
+ hdr->inode, NFS_INO_INVALID_BLOCKS);
hdr->args.bitmask = hdr->args.bitmask_store;
}

@@ -6506,8 +6500,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred,
data->args.fhandle = &data->fh;
data->args.stateid = &data->stateid;
nfs4_bitmask_set(data->args.bitmask_store,
- server->cache_consistency_bitmask, inode, server,
- NULL);
+ server->cache_consistency_bitmask, inode, 0);
data->args.bitmask = data->args.bitmask_store;
nfs_copy_fh(&data->fh, NFS_FH(inode));
nfs4_stateid_copy(&data->stateid, stateid);
--
2.33.1