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| author | Chuck Lever <chuck.lever@oracle.com> | 2021-03-05 13:57:40 -0500 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2021-03-22 10:19:02 -0400 |
| commit | 6019ce0742ca55d3e45279a19b07d1542747a098 (patch) | |
| tree | 1bfa8501f958f76303121895bf0d62cfd27dc798 /fs/nfsd/vfs.c | |
| parent | 1416f435303d81070c6bcf5a4a9b4ed0f7a9f013 (diff) | |
NFSD: Add a tracepoint to record directory entry encoding
Enable watching the progress of directory encoding to capture the
timing of any issues with reading or encoding a directory. The
new tracepoint captures dirent encoding for all NFS versions.
For example, here's what a few NFSv4 directory entries might look
like:
nfsd-989 [002] 468.596265: nfsd_dirent: fh_hash=0x5d162594 ino=2 name=.
nfsd-989 [002] 468.596267: nfsd_dirent: fh_hash=0x5d162594 ino=1 name=..
nfsd-989 [002] 468.596299: nfsd_dirent: fh_hash=0x5d162594 ino=3827 name=zlib.c
nfsd-989 [002] 468.596325: nfsd_dirent: fh_hash=0x5d162594 ino=3811 name=xdiff
nfsd-989 [002] 468.596351: nfsd_dirent: fh_hash=0x5d162594 ino=3810 name=xdiff-interface.h
nfsd-989 [002] 468.596377: nfsd_dirent: fh_hash=0x5d162594 ino=3809 name=xdiff-interface.c
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/vfs.c')
| -rw-r--r-- | fs/nfsd/vfs.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index fd6be35a1642..15adf1f6ab21 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1968,8 +1968,9 @@ static int nfsd_buffered_filldir(struct dir_context *ctx, const char *name, return 0; } -static __be32 nfsd_buffered_readdir(struct file *file, nfsd_filldir_t func, - struct readdir_cd *cdp, loff_t *offsetp) +static __be32 nfsd_buffered_readdir(struct file *file, struct svc_fh *fhp, + nfsd_filldir_t func, struct readdir_cd *cdp, + loff_t *offsetp) { struct buffered_dirent *de; int host_err; @@ -2015,6 +2016,8 @@ static __be32 nfsd_buffered_readdir(struct file *file, nfsd_filldir_t func, if (cdp->err != nfs_ok) break; + trace_nfsd_dirent(fhp, de->ino, de->name, de->namlen); + reclen = ALIGN(sizeof(*de) + de->namlen, sizeof(u64)); size -= reclen; @@ -2062,7 +2065,7 @@ nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp, goto out_close; } - err = nfsd_buffered_readdir(file, func, cdp, offsetp); + err = nfsd_buffered_readdir(file, fhp, func, cdp, offsetp); if (err == nfserr_eof || err == nfserr_toosmall) err = nfs_ok; /* can still be found in ->err */ |