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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-14 20:04:32 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-14 20:04:32 -0700 |
commit | 6ed0529fef09f50ef41d396cb55c5519e4936b16 (patch) | |
tree | 09d83956d0c386fc62440243c903ca889f34ab2c | |
parent | 9e0ce554b039e3df288d83189ecf226c16da04af (diff) | |
parent | bf4b49059718b2217339eb15c60f8753d5b0da99 (diff) | |
download | linux-stable-6ed0529fef09f50ef41d396cb55c5519e4936b16.tar.gz linux-stable-6ed0529fef09f50ef41d396cb55c5519e4936b16.tar.bz2 linux-stable-6ed0529fef09f50ef41d396cb55c5519e4936b16.zip |
Merge tag 'nfs-for-4.14-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull more NFS client updates from Trond Myklebust:
"Hightlights include:
Bugfixes:
- Various changes relating to reporting IO errors.
- pnfs: Use the standard I/O stateid when calling LAYOUTGET
Features:
- Add static NFS I/O tracepoints for debugging"
* tag 'nfs-for-4.14-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: various changes relating to reporting IO errors.
NFS: Add static NFS I/O tracepoints
pNFS: Use the standard I/O stateid when calling LAYOUTGET
-rw-r--r-- | fs/nfs/file.c | 16 | ||||
-rw-r--r-- | fs/nfs/internal.h | 7 | ||||
-rw-r--r-- | fs/nfs/nfstrace.h | 248 | ||||
-rw-r--r-- | fs/nfs/pagelist.c | 4 | ||||
-rw-r--r-- | fs/nfs/pnfs.c | 14 | ||||
-rw-r--r-- | fs/nfs/read.c | 4 | ||||
-rw-r--r-- | fs/nfs/write.c | 14 |
7 files changed, 287 insertions, 20 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c index a385d1c3f146..0214dd1e1060 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -208,21 +208,19 @@ EXPORT_SYMBOL_GPL(nfs_file_mmap); * fall back to doing a synchronous write. */ static int -nfs_file_fsync_commit(struct file *file, loff_t start, loff_t end, int datasync) +nfs_file_fsync_commit(struct file *file, int datasync) { struct nfs_open_context *ctx = nfs_file_open_context(file); struct inode *inode = file_inode(file); - int have_error, do_resend, status; + int do_resend, status; int ret = 0; dprintk("NFS: fsync file(%pD2) datasync %d\n", file, datasync); nfs_inc_stats(inode, NFSIOS_VFSFSYNC); do_resend = test_and_clear_bit(NFS_CONTEXT_RESEND_WRITES, &ctx->flags); - have_error = test_and_clear_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags); status = nfs_commit_inode(inode, FLUSH_SYNC); - have_error |= test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags); - if (have_error) { + if (test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags)) { ret = xchg(&ctx->error, 0); if (ret) goto out; @@ -247,10 +245,16 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) trace_nfs_fsync_enter(inode); do { + struct nfs_open_context *ctx = nfs_file_open_context(file); ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (test_and_clear_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags)) { + int ret2 = xchg(&ctx->error, 0); + if (ret2) + ret = ret2; + } if (ret != 0) break; - ret = nfs_file_fsync_commit(file, start, end, datasync); + ret = nfs_file_fsync_commit(file, datasync); if (!ret) ret = pnfs_sync_inode(inode, !!datasync); /* diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 68cc22083639..5bdf952f414b 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -768,3 +768,10 @@ static inline bool nfs_error_is_fatal(int err) return false; } } + +static inline void nfs_context_set_write_error(struct nfs_open_context *ctx, int error) +{ + ctx->error = error; + smp_wmb(); + set_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags); +} diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h index 2ca9167bc97d..551711042ba4 100644 --- a/fs/nfs/nfstrace.h +++ b/fs/nfs/nfstrace.h @@ -719,6 +719,254 @@ TRACE_EVENT(nfs_sillyrename_unlink, __get_str(name) ) ); + +TRACE_EVENT(nfs_initiate_read, + TP_PROTO( + const struct inode *inode, + loff_t offset, unsigned long count + ), + + TP_ARGS(inode, offset, count), + + TP_STRUCT__entry( + __field(loff_t, offset) + __field(unsigned long, count) + __field(dev_t, dev) + __field(u32, fhandle) + __field(u64, fileid) + ), + + TP_fast_assign( + const struct nfs_inode *nfsi = NFS_I(inode); + + __entry->offset = offset; + __entry->count = count; + __entry->dev = inode->i_sb->s_dev; + __entry->fileid = nfsi->fileid; + __entry->fhandle = nfs_fhandle_hash(&nfsi->fh); + ), + + TP_printk( + "fileid=%02x:%02x:%llu fhandle=0x%08x " + "offset=%lld count=%lu", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->fileid, + __entry->fhandle, + __entry->offset, __entry->count + ) +); + +TRACE_EVENT(nfs_readpage_done, + TP_PROTO( + const struct inode *inode, + int status, loff_t offset, bool eof + ), + + TP_ARGS(inode, status, offset, eof), + + TP_STRUCT__entry( + __field(int, status) + __field(loff_t, offset) + __field(bool, eof) + __field(dev_t, dev) + __field(u32, fhandle) + __field(u64, fileid) + ), + + TP_fast_assign( + const struct nfs_inode *nfsi = NFS_I(inode); + + __entry->status = status; + __entry->offset = offset; + __entry->eof = eof; + __entry->dev = inode->i_sb->s_dev; + __entry->fileid = nfsi->fileid; + __entry->fhandle = nfs_fhandle_hash(&nfsi->fh); + ), + + TP_printk( + "fileid=%02x:%02x:%llu fhandle=0x%08x " + "offset=%lld status=%d%s", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->fileid, + __entry->fhandle, + __entry->offset, __entry->status, + __entry->eof ? " eof" : "" + ) +); + +/* + * XXX: I tried using NFS_UNSTABLE and friends in this table, but they + * all evaluate to 0 for some reason, even if I include linux/nfs.h. + */ +#define nfs_show_stable(stable) \ + __print_symbolic(stable, \ + { 0, " (UNSTABLE)" }, \ + { 1, " (DATA_SYNC)" }, \ + { 2, " (FILE_SYNC)" }) + +TRACE_EVENT(nfs_initiate_write, + TP_PROTO( + const struct inode *inode, + loff_t offset, unsigned long count, + enum nfs3_stable_how stable + ), + + TP_ARGS(inode, offset, count, stable), + + TP_STRUCT__entry( + __field(loff_t, offset) + __field(unsigned long, count) + __field(enum nfs3_stable_how, stable) + __field(dev_t, dev) + __field(u32, fhandle) + __field(u64, fileid) + ), + + TP_fast_assign( + const struct nfs_inode *nfsi = NFS_I(inode); + + __entry->offset = offset; + __entry->count = count; + __entry->stable = stable; + __entry->dev = inode->i_sb->s_dev; + __entry->fileid = nfsi->fileid; + __entry->fhandle = nfs_fhandle_hash(&nfsi->fh); + ), + + TP_printk( + "fileid=%02x:%02x:%llu fhandle=0x%08x " + "offset=%lld count=%lu stable=%d%s", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->fileid, + __entry->fhandle, + __entry->offset, __entry->count, + __entry->stable, nfs_show_stable(__entry->stable) + ) +); + +TRACE_EVENT(nfs_writeback_done, + TP_PROTO( + const struct inode *inode, + int status, + loff_t offset, + struct nfs_writeverf *writeverf + ), + + TP_ARGS(inode, status, offset, writeverf), + + TP_STRUCT__entry( + __field(int, status) + __field(loff_t, offset) + __field(enum nfs3_stable_how, stable) + __field(unsigned long long, verifier) + __field(dev_t, dev) + __field(u32, fhandle) + __field(u64, fileid) + ), + + TP_fast_assign( + const struct nfs_inode *nfsi = NFS_I(inode); + + __entry->status = status; + __entry->offset = offset; + __entry->stable = writeverf->committed; + memcpy(&__entry->verifier, &writeverf->verifier, + sizeof(__entry->verifier)); + __entry->dev = inode->i_sb->s_dev; + __entry->fileid = nfsi->fileid; + __entry->fhandle = nfs_fhandle_hash(&nfsi->fh); + ), + + TP_printk( + "fileid=%02x:%02x:%llu fhandle=0x%08x " + "offset=%lld status=%d stable=%d%s " + "verifier 0x%016llx", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->fileid, + __entry->fhandle, + __entry->offset, __entry->status, + __entry->stable, nfs_show_stable(__entry->stable), + __entry->verifier + ) +); + +TRACE_EVENT(nfs_initiate_commit, + TP_PROTO( + const struct nfs_commit_data *data + ), + + TP_ARGS(data), + + TP_STRUCT__entry( + __field(loff_t, offset) + __field(unsigned long, count) + __field(dev_t, dev) + __field(u32, fhandle) + __field(u64, fileid) + ), + + TP_fast_assign( + const struct inode *inode = data->inode; + const struct nfs_inode *nfsi = NFS_I(inode); + + __entry->offset = data->args.offset; + __entry->count = data->args.count; + __entry->dev = inode->i_sb->s_dev; + __entry->fileid = nfsi->fileid; + __entry->fhandle = nfs_fhandle_hash(&nfsi->fh); + ), + + TP_printk( + "fileid=%02x:%02x:%llu fhandle=0x%08x " + "offset=%lld count=%lu", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->fileid, + __entry->fhandle, + __entry->offset, __entry->count + ) +); + +TRACE_EVENT(nfs_commit_done, + TP_PROTO( + const struct nfs_commit_data *data + ), + + TP_ARGS(data), + + TP_STRUCT__entry( + __field(int, status) + __field(loff_t, offset) + __field(unsigned long long, verifier) + __field(dev_t, dev) + __field(u32, fhandle) + __field(u64, fileid) + ), + + TP_fast_assign( + const struct inode *inode = data->inode; + const struct nfs_inode *nfsi = NFS_I(inode); + + __entry->status = data->res.op_status; + __entry->offset = data->args.offset; + memcpy(&__entry->verifier, &data->verf.verifier, + sizeof(__entry->verifier)); + __entry->dev = inode->i_sb->s_dev; + __entry->fileid = nfsi->fileid; + __entry->fhandle = nfs_fhandle_hash(&nfsi->fh); + ), + + TP_printk( + "fileid=%02x:%02x:%llu fhandle=0x%08x " + "offset=%lld status=%d verifier 0x%016llx", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->fileid, + __entry->fhandle, + __entry->offset, __entry->status, + __entry->verifier + ) +); + #endif /* _TRACE_NFS_H */ #undef TRACE_INCLUDE_PATH diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index bec120ec1967..d0543e19098a 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -1170,8 +1170,8 @@ out_failed: /* remember fatal errors */ if (nfs_error_is_fatal(desc->pg_error)) - mapping_set_error(desc->pg_inode->i_mapping, - desc->pg_error); + nfs_context_set_write_error(req->wb_context, + desc->pg_error); func = desc->pg_completion_ops->error_cleanup; for (midx = 0; midx < desc->pg_mirror_count; midx++) { diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 7879ed8ceb76..3bcd669a3152 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1664,7 +1664,7 @@ pnfs_update_layout(struct inode *ino, .offset = pos, .length = count, }; - unsigned pg_offset, seq; + unsigned pg_offset; struct nfs_server *server = NFS_SERVER(ino); struct nfs_client *clp = server->nfs_client; struct pnfs_layout_hdr *lo = NULL; @@ -1754,10 +1754,14 @@ lookup_again: } first = true; - do { - seq = read_seqbegin(&ctx->state->seqlock); - nfs4_stateid_copy(&stateid, &ctx->state->stateid); - } while (read_seqretry(&ctx->state->seqlock, seq)); + if (nfs4_select_rw_stateid(ctx->state, + iomode == IOMODE_RW ? FMODE_WRITE : FMODE_READ, + NULL, &stateid, NULL) != 0) { + trace_pnfs_update_layout(ino, pos, count, + iomode, lo, lseg, + PNFS_UPDATE_LAYOUT_INVALID_OPEN); + goto out_unlock; + } } else { nfs4_stateid_copy(&stateid, &lo->plh_stateid); } diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 0d42573d423d..48d7277c60a9 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -25,6 +25,7 @@ #include "iostat.h" #include "fscache.h" #include "pnfs.h" +#include "nfstrace.h" #define NFSDBG_FACILITY NFSDBG_PAGECACHE @@ -200,6 +201,7 @@ static void nfs_initiate_read(struct nfs_pgio_header *hdr, task_setup_data->flags |= swap_flags; rpc_ops->read_setup(hdr, msg); + trace_nfs_initiate_read(inode, hdr->io_start, hdr->good_bytes); } static void @@ -232,6 +234,8 @@ static int nfs_readpage_done(struct rpc_task *task, return status; nfs_add_stats(inode, NFSIOS_SERVERREADBYTES, hdr->res.count); + trace_nfs_readpage_done(inode, task->tk_status, + hdr->args.offset, hdr->res.eof); if (task->tk_status == -ESTALE) { set_bit(NFS_INO_STALE, &NFS_I(inode)->flags); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index f68083db63c8..babebbccae2a 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -145,13 +145,6 @@ static void nfs_io_completion_put(struct nfs_io_completion *ioc) kref_put(&ioc->refcount, nfs_io_completion_release); } -static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error) -{ - ctx->error = error; - smp_wmb(); - set_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags); -} - static struct nfs_page * nfs_page_private_request(struct page *page) { @@ -1383,6 +1376,8 @@ static void nfs_initiate_write(struct nfs_pgio_header *hdr, task_setup_data->priority = priority; rpc_ops->write_setup(hdr, msg); + trace_nfs_initiate_write(hdr->inode, hdr->io_start, hdr->good_bytes, + hdr->args.stable); nfs4_state_protect_write(NFS_SERVER(hdr->inode)->nfs_client, &task_setup_data->rpc_client, msg, hdr); @@ -1540,7 +1535,10 @@ static int nfs_writeback_done(struct rpc_task *task, status = NFS_PROTO(inode)->write_done(task, hdr); if (status != 0) return status; + nfs_add_stats(inode, NFSIOS_SERVERWRITTENBYTES, hdr->res.count); + trace_nfs_writeback_done(inode, task->tk_status, + hdr->args.offset, hdr->res.verf); if (hdr->res.verf->committed < hdr->args.stable && task->tk_status >= 0) { @@ -1669,6 +1667,7 @@ int nfs_initiate_commit(struct rpc_clnt *clnt, struct nfs_commit_data *data, }; /* Set up the initial task struct. */ nfs_ops->commit_setup(data, &msg); + trace_nfs_initiate_commit(data); dprintk("NFS: initiated commit call\n"); @@ -1793,6 +1792,7 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata) /* Call the NFS version-specific code */ NFS_PROTO(data->inode)->commit_done(task, data); + trace_nfs_commit_done(data); } static void nfs_commit_release_pages(struct nfs_commit_data *data) |