^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * NFSv4 flexfile layout driver data structures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2014, Primary Data, Inc. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Tao Peng <bergwolf@primarydata.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef FS_NFS_NFS4FLEXFILELAYOUT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define FS_NFS_NFS4FLEXFILELAYOUT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define FF_FLAGS_NO_LAYOUTCOMMIT 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define FF_FLAGS_NO_IO_THRU_MDS 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define FF_FLAGS_NO_READ_IO 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/refcount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "../pnfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) /* XXX: Let's filter out insanely large mirror count for now to avoid oom
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * due to network error etc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define NFS4_FLEXFILE_LAYOUT_MAX_MIRROR_CNT 4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /* LAYOUTSTATS report interval in ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define FF_LAYOUTSTATS_REPORT_INTERVAL (60000L)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define FF_LAYOUTSTATS_MAXDEV 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct nfs4_ff_ds_version {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) u32 version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) u32 minor_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) u32 rsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) u32 wsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) bool tightly_coupled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /* chained in global deviceid hlist */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct nfs4_ff_layout_ds {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct nfs4_deviceid_node id_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u32 ds_versions_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct nfs4_ff_ds_version *ds_versions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct nfs4_pnfs_ds *ds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct nfs4_ff_layout_ds_err {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct list_head list; /* linked in mirror error_list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u64 offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u64 length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) enum nfs_opnum4 opnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) nfs4_stateid stateid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct nfs4_deviceid deviceid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct nfs4_ff_io_stat {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) __u64 ops_requested;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) __u64 bytes_requested;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) __u64 ops_completed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) __u64 bytes_completed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) __u64 bytes_not_delivered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) ktime_t total_busy_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) ktime_t aggregate_completion_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct nfs4_ff_busy_timer {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ktime_t start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) atomic_t n_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct nfs4_ff_layoutstat {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct nfs4_ff_io_stat io_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct nfs4_ff_busy_timer busy_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct nfs4_ff_layout_mirror {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct pnfs_layout_hdr *layout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct list_head mirrors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) u32 ds_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) u32 efficiency;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct nfs4_deviceid devid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct nfs4_ff_layout_ds *mirror_ds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) u32 fh_versions_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct nfs_fh *fh_versions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) nfs4_stateid stateid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) const struct cred __rcu *ro_cred;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) const struct cred __rcu *rw_cred;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) refcount_t ref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct nfs4_ff_layoutstat read_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct nfs4_ff_layoutstat write_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ktime_t start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u32 report_interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define NFS4_FF_MIRROR_STAT_AVAIL (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct nfs4_ff_layout_segment {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct pnfs_layout_segment generic_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) u64 stripe_unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) u32 mirror_array_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct nfs4_ff_layout_mirror *mirror_array[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct nfs4_flexfile_layout {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct pnfs_layout_hdr generic_hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct pnfs_ds_commit_info commit_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct list_head mirrors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct list_head error_list; /* nfs4_ff_layout_ds_err */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) ktime_t last_report_time; /* Layoutstat report times */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct nfs4_flexfile_layoutreturn_args {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct list_head errors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct nfs42_layoutstat_devinfo devinfo[FF_LAYOUTSTATS_MAXDEV];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) unsigned int num_errors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) unsigned int num_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct page *pages[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static inline struct nfs4_flexfile_layout *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) FF_LAYOUT_FROM_HDR(struct pnfs_layout_hdr *lo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return container_of(lo, struct nfs4_flexfile_layout, generic_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static inline struct nfs4_ff_layout_segment *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) FF_LAYOUT_LSEG(struct pnfs_layout_segment *lseg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return container_of(lseg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct nfs4_ff_layout_segment,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) generic_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static inline struct nfs4_ff_layout_ds *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) FF_LAYOUT_MIRROR_DS(struct nfs4_deviceid_node *node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return container_of(node, struct nfs4_ff_layout_ds, id_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static inline struct nfs4_ff_layout_mirror *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) FF_LAYOUT_COMP(struct pnfs_layout_segment *lseg, u32 idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (idx < fls->mirror_array_cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return fls->mirror_array[idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static inline struct nfs4_deviceid_node *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) FF_LAYOUT_DEVID_NODE(struct pnfs_layout_segment *lseg, u32 idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (mirror != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct nfs4_ff_layout_ds *mirror_ds = mirror->mirror_ds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (!IS_ERR_OR_NULL(mirror_ds))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return &mirror_ds->id_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static inline u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) FF_LAYOUT_MIRROR_COUNT(struct pnfs_layout_segment *lseg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return FF_LAYOUT_LSEG(lseg)->mirror_array_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static inline bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) ff_layout_no_fallback_to_mds(struct pnfs_layout_segment *lseg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return FF_LAYOUT_LSEG(lseg)->flags & FF_FLAGS_NO_IO_THRU_MDS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static inline bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) ff_layout_no_read_on_rw(struct pnfs_layout_segment *lseg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) return FF_LAYOUT_LSEG(lseg)->flags & FF_FLAGS_NO_READ_IO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) nfs4_ff_layout_ds_version(const struct nfs4_ff_layout_mirror *mirror)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return mirror->mirror_ds->ds_versions[0].version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct nfs4_ff_layout_ds *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) nfs4_ff_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) gfp_t gfp_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) void nfs4_ff_layout_put_deviceid(struct nfs4_ff_layout_ds *mirror_ds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) void nfs4_ff_layout_free_deviceid(struct nfs4_ff_layout_ds *mirror_ds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct nfs4_ff_layout_mirror *mirror, u64 offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) u64 length, int status, enum nfs_opnum4 opnum,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) gfp_t gfp_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) void ff_layout_send_layouterror(struct pnfs_layout_segment *lseg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) int ff_layout_encode_ds_ioerr(struct xdr_stream *xdr, const struct list_head *head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) void ff_layout_free_ds_ioerr(struct list_head *head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) unsigned int ff_layout_fetch_ds_ioerr(struct pnfs_layout_hdr *lo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) const struct pnfs_layout_range *range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) struct list_head *head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) unsigned int maxnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) struct nfs_fh *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) nfs4_ff_layout_select_ds_fh(struct nfs4_ff_layout_mirror *mirror);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) nfs4_ff_layout_select_ds_stateid(const struct nfs4_ff_layout_mirror *mirror,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) nfs4_stateid *stateid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct nfs4_pnfs_ds *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct nfs4_ff_layout_mirror *mirror,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) bool fail_return);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct rpc_clnt *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) nfs4_ff_find_or_create_ds_client(struct nfs4_ff_layout_mirror *mirror,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) struct nfs_client *ds_clp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) const struct cred *ff_layout_get_ds_cred(struct nfs4_ff_layout_mirror *mirror,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) const struct pnfs_layout_range *range,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) const struct cred *mdscred);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) bool ff_layout_avoid_mds_available_ds(struct pnfs_layout_segment *lseg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) bool ff_layout_avoid_read_on_rw(struct pnfs_layout_segment *lseg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) #endif /* FS_NFS_NFS4FLEXFILELAYOUT_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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