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NFSv4.1: Don't trust attributes if a pNFS LAYOUTCOMMIT is outstanding

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If a LAYOUTCOMMIT is outstanding, then chances are that the metadata
server may still be returning incorrect values for the change attribute,
ctime, mtime and/or size.
Just ignore those attributes for now, and wait for the LAYOUTCOMMIT
rpc call to finish.

Reported-by: shaobingqing <shaobingqing@bwstor.com.cn>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust
2014-01-13 12:08:11 -05:00
parent 16a6ddc709
commit d8c951c313
3 changed files with 35 additions and 5 deletions
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16
fs/nfs/pnfs.h
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@@ -359,6 +359,15 @@ pnfs_ld_layoutret_on_setattr(struct inode *inode)
PNFS_LAYOUTRET_ON_SETATTR;
}
static inline bool
pnfs_layoutcommit_outstanding(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 ||
test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0;
}
static inline int pnfs_return_layout(struct inode *ino)
{
struct nfs_inode *nfsi = NFS_I(ino);
@@ -515,6 +524,13 @@ pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src,
return false;
}
static inline bool
pnfs_layoutcommit_outstanding(struct inode *inode)
{
return false;
}
static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void)
{
return NULL;