diff options
| author | Dave Wysochanski | 2023-03-09 13:58:52 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-03-30 12:49:02 +0200 |
| commit | 4797ad1f561797f91fb2064739937cb76287e613 (patch) | |
| tree | ac5ad484b3adba4863b00f47e223b745918f821e /fs/nfs | |
| parent | 26aef3be6efa999db89756f2f97e72f7306a9e47 (diff) | |
NFS: Fix /proc/PID/io read_bytes for buffered reads
[ Upstream commit 9c88ea00fef03031ce6554531e89be82f6a42835 ]
Prior to commit 8786fde8421c ("Convert NFS from readpages to
readahead"), nfs_readpages() used the old mm interface read_cache_pages()
which called task_io_account_read() for each NFS page read. After
this commit, nfs_readpages() is converted to nfs_readahead(), which
now uses the new mm interface readahead_page(). The new interface
requires callers to call task_io_account_read() themselves.
In addition, to nfs_readahead() task_io_account_read() should also
be called from nfs_read_folio().
Fixes: 8786fde8421c ("Convert NFS from readpages to readahead")
Link: https://lore.kernel.org/linux-nfs/CAPt2mGNEYUk5u8V4abe=5MM5msZqmvzCVrtCP4Qw1n=gCHCnww@mail.gmail.com/
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/read.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 8ae2c8d1219d..cd970ce62786 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -15,6 +15,7 @@ #include <linux/stat.h> #include <linux/mm.h> #include <linux/slab.h> +#include <linux/task_io_accounting_ops.h> #include <linux/pagemap.h> #include <linux/sunrpc/clnt.h> #include <linux/nfs_fs.h> @@ -338,6 +339,7 @@ int nfs_read_folio(struct file *file, struct folio *folio) trace_nfs_aop_readpage(inode, page); nfs_inc_stats(inode, NFSIOS_VFSREADPAGE); + task_io_account_read(folio_size(folio)); /* * Try to flush any pending writes to the file.. @@ -400,6 +402,7 @@ void nfs_readahead(struct readahead_control *ractl) trace_nfs_aop_readahead(inode, readahead_pos(ractl), nr_pages); nfs_inc_stats(inode, NFSIOS_VFSREADPAGES); + task_io_account_read(readahead_length(ractl)); ret = -ESTALE; if (NFS_STALE(inode)) |