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| author | Dave Wysochanski <dwysocha@redhat.com> | 2023-03-09 21:58:52 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-30 13:49:02 +0300 |
| commit | 4797ad1f561797f91fb2064739937cb76287e613 (patch) | |
| tree | ac5ad484b3adba4863b00f47e223b745918f821e /kernel/usermode_driver.c | |
| parent | 26aef3be6efa999db89756f2f97e72f7306a9e47 (diff) | |
| download | linux-4797ad1f561797f91fb2064739937cb76287e613.tar.xz | |
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 'kernel/usermode_driver.c')
0 files changed, 0 insertions, 0 deletions