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| author |   Dave Wysochanski <dwysocha@redhat.com> | 2021-11-02 15:51:55 -0400 |
|---|---|---|
| committer |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-11-02 16:44:02 -0400 |
| commit | edfa0b16bf9eb1e2c93e7e846e0e02c51395ca7b (patch) | |
| tree | 7028b43eb200eb37d4c0c17a4ca6d9f2ef956923 /fs/nfs/read.c | |
| parent | xprtrdma: Fix a maybe-uninitialized compiler warning (diff) | |
| download | linux-dev-edfa0b16bf9eb1e2c93e7e846e0e02c51395ca7b.tar.xz linux-dev-edfa0b16bf9eb1e2c93e7e846e0e02c51395ca7b.zip | |
NFS: Add offset to nfs_aop_readahead tracepoint
Add the byte offset of the readahead request to the tracepoint output
so we know where the read starts.
Before this patch:
cat-8104 [002] ..... 813.168775: nfs_aop_readahead: fileid=00:31:141 fhandle=0xe55807f6 version=1756509392533525500 nr_pages=256
cat-8104 [002] ..... 813.174973: nfs_aop_readahead_done: fileid=00:31:141 fhandle=0xe55807f6 version=1756509392533525500 nr_pages=256 ret=0
cat-8104 [002] ..... 813.175963: nfs_aop_readahead: fileid=00:31:141 fhandle=0xe55807f6 version=1756509392533525500 nr_pages=256
cat-8104 [002] ..... 813.183742: nfs_aop_readahead_done: fileid=00:31:141 fhandle=0xe55807f6 version=1756509392533525500 nr_pages=1 ret=0
After this patch:
cat-6392 [001] ..... 73.107782: nfs_aop_readahead: fileid=00:31:141 fhandle=0xed22403f version=1756511950029502774 offset=5242880 nr_pages=256
cat-6392 [001] ..... 73.112466: nfs_aop_readahead_done: fileid=00:31:141 fhandle=0xed22403f version=1756511950029502774 nr_pages=256 ret=0
cat-6392 [001] ..... 73.115692: nfs_aop_readahead: fileid=00:31:141 fhandle=0xed22403f version=1756511950029502774 offset=6291456 nr_pages=256
cat-6392 [001] ..... 73.123283: nfs_aop_readahead_done: fileid=00:31:141 fhandle=0xed22403f version=1756511950029502774 nr_pages=256 ret=0
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/nfs/read.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/read.c b/fs/nfs/read.c index c8273d4b12ad..d11af2a9299c 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -404,7 +404,7 @@ int nfs_readpages(struct file *file, struct address_space *mapping, struct inode *inode = mapping->host; int ret; - trace_nfs_aop_readahead(inode, nr_pages); + trace_nfs_aop_readahead(inode, lru_to_page(pages), nr_pages); nfs_inc_stats(inode, NFSIOS_VFSREADPAGES); ret = -ESTALE; |