da68bc55d5
[ Upstream commit f963cf2b91a30b5614c514f3ad53ca124cb65280 ] When pNFS client in the block or scsi layout mode sends layoutcommit to MDS, a variable length array of modified extents is supplied within the request. This patch allows the server to accept such extent arrays if they do not fit within single memory page. The issue can be reproduced when writing to a 1GB file using FIO with O_DIRECT, 4K block and large I/O depth without preallocation of the file. In this case, the server returns NFSERR_BADXDR to the client. Co-developed-by: Konstantin Evtushenko <koevtushenko@yandex.com> Signed-off-by: Konstantin Evtushenko <koevtushenko@yandex.com> Signed-off-by: Sergey Bashirov <sergeybashirov@gmail.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Stable-dep-of: d68886bae76a ("NFSD: Fix last write offset handling in layoutcommit") Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
108 lines
2.9 KiB
C
108 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _FS_NFSD_PNFS_H
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#define _FS_NFSD_PNFS_H 1
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#ifdef CONFIG_NFSD_V4
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#include <linux/exportfs.h>
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#include <linux/nfsd/export.h>
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#include "state.h"
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#include "xdr4.h"
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struct xdr_stream;
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struct nfsd4_deviceid_map {
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struct list_head hash;
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u64 idx;
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int fsid_type;
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u32 fsid[];
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};
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struct nfsd4_layout_ops {
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u32 notify_types;
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bool disable_recalls;
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__be32 (*proc_getdeviceinfo)(struct super_block *sb,
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struct svc_rqst *rqstp,
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struct nfs4_client *clp,
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struct nfsd4_getdeviceinfo *gdevp);
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__be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr,
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const struct nfsd4_getdeviceinfo *gdevp);
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__be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp,
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struct nfsd4_layoutget *lgp);
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__be32 (*encode_layoutget)(struct xdr_stream *xdr,
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const struct nfsd4_layoutget *lgp);
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__be32 (*proc_layoutcommit)(struct inode *inode,
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struct svc_rqst *rqstp,
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struct nfsd4_layoutcommit *lcp);
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void (*fence_client)(struct nfs4_layout_stateid *ls,
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struct nfsd_file *file);
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};
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extern const struct nfsd4_layout_ops *nfsd4_layout_ops[];
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#ifdef CONFIG_NFSD_BLOCKLAYOUT
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extern const struct nfsd4_layout_ops bl_layout_ops;
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#endif
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#ifdef CONFIG_NFSD_SCSILAYOUT
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extern const struct nfsd4_layout_ops scsi_layout_ops;
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#endif
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#ifdef CONFIG_NFSD_FLEXFILELAYOUT
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extern const struct nfsd4_layout_ops ff_layout_ops;
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#endif
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__be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
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struct nfsd4_compound_state *cstate, stateid_t *stateid,
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bool create, u32 layout_type, struct nfs4_layout_stateid **lsp);
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__be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp,
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struct nfs4_layout_stateid *ls);
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__be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp,
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struct nfsd4_compound_state *cstate,
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struct nfsd4_layoutreturn *lrp);
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__be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp,
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struct nfsd4_compound_state *cstate,
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struct nfsd4_layoutreturn *lrp);
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int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp,
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u32 device_generation);
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struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx);
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#endif /* CONFIG_NFSD_V4 */
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#ifdef CONFIG_NFSD_PNFS
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void nfsd4_setup_layout_type(struct svc_export *exp);
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void nfsd4_return_all_client_layouts(struct nfs4_client *);
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void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
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struct nfs4_file *fp);
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void nfsd4_close_layout(struct nfs4_layout_stateid *ls);
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int nfsd4_init_pnfs(void);
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void nfsd4_exit_pnfs(void);
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#else
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struct nfs4_client;
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struct nfs4_file;
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struct nfs4_layout_stateid;
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static inline void nfsd4_setup_layout_type(struct svc_export *exp)
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{
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}
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static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp)
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{
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}
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static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
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struct nfs4_file *fp)
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{
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}
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static inline void nfsd4_close_layout(struct nfs4_layout_stateid *ls)
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{
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}
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static inline void nfsd4_exit_pnfs(void)
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{
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}
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static inline int nfsd4_init_pnfs(void)
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{
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return 0;
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}
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#endif /* CONFIG_NFSD_PNFS */
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#endif /* _FS_NFSD_PNFS_H */
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