From: Daniel Gomez <da.gomez@samsung.com>
To: "hughd@google.com" <hughd@google.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"willy@infradead.org" <willy@infradead.org>,
"jack@suse.cz" <jack@suse.cz>,
"mcgrof@kernel.org" <mcgrof@kernel.org>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-xfs@vger.kernel.org" <linux-xfs@vger.kernel.org>,
"djwong@kernel.org" <djwong@kernel.org>,
"Pankaj Raghav" <p.raghav@samsung.com>,
"dagmcr@gmail.com" <dagmcr@gmail.com>,
"yosryahmed@google.com" <yosryahmed@google.com>,
"baolin.wang@linux.alibaba.com" <baolin.wang@linux.alibaba.com>,
"ritesh.list@gmail.com" <ritesh.list@gmail.com>,
"lsf-pc@lists.linux-foundation.org"
<lsf-pc@lists.linux-foundation.org>,
"david@redhat.com" <david@redhat.com>,
"chandan.babu@oracle.com" <chandan.babu@oracle.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"brauner@kernel.org" <brauner@kernel.org>,
Daniel Gomez <da.gomez@samsung.com>
Subject: [PATCH 01/12] splice: don't check for uptodate if partially uptodate is impl
Date: Wed, 15 May 2024 05:57:23 +0000 [thread overview]
Message-ID: <20240515055719.32577-2-da.gomez@samsung.com> (raw)
In-Reply-To: <20240515055719.32577-1-da.gomez@samsung.com>
From: Pankaj Raghav <p.raghav@samsung.com>
When a large folio is alloced, splice will zero out the whole folio even
if only a small part of it is written, and it updates the uptodate flag
of the folio.
Once the per-block uptodate tracking is implemented for tmpfs,
pipe_buf_confirm() only needs to check the range it needs to splice to
be uptodate and not the whole folio as we don't set uptodate flag for
partial writes.
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
---
fs/splice.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/fs/splice.c b/fs/splice.c
index 218e24b1ac40..e6ac57795590 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -120,7 +120,9 @@ static int page_cache_pipe_buf_confirm(struct pipe_inode_info *pipe,
struct pipe_buffer *buf)
{
struct folio *folio = page_folio(buf->page);
+ const struct address_space_operations *ops;
int err;
+ off_t off = folio_page_idx(folio, buf->page) * PAGE_SIZE + buf->offset;
if (!folio_test_uptodate(folio)) {
folio_lock(folio);
@@ -134,12 +136,21 @@ static int page_cache_pipe_buf_confirm(struct pipe_inode_info *pipe,
goto error;
}
+ ops = folio->mapping->a_ops;
/*
* Uh oh, read-error from disk.
*/
- if (!folio_test_uptodate(folio)) {
- err = -EIO;
- goto error;
+ if (!ops->is_partially_uptodate) {
+ if (!folio_test_uptodate(folio)) {
+ err = -EIO;
+ goto error;
+ }
+ } else {
+ if (!ops->is_partially_uptodate(folio, off,
+ buf->len)) {
+ err = -EIO;
+ goto error;
+ }
}
/* Folio is ok after all, we are done */
--
2.43.0
next prev parent reply other threads:[~2024-05-15 5:57 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20240515055723eucas1p11bf14732f7fac943e688369ff7765f79@eucas1p1.samsung.com>
2024-05-15 5:57 ` [PATCH 00/12] [LSF/MM/BPF RFC] shmem/tmpfs: add large folios support Daniel Gomez
[not found] ` <CGME20240515055724eucas1p1c502dbded4dc6ff929c7aff570de80c2@eucas1p1.samsung.com>
2024-05-15 5:57 ` Daniel Gomez [this message]
[not found] ` <CGME20240515055726eucas1p2a795fc743373571bfc3349f9e1ef3f9e@eucas1p2.samsung.com>
2024-05-15 5:57 ` [PATCH 02/12] shmem: add per-block uptodate tracking for large folios Daniel Gomez
[not found] ` <CGME20240515055727eucas1p2413c65b8b227ac0c6007b4600574abd8@eucas1p2.samsung.com>
2024-05-15 5:57 ` [PATCH 03/12] shmem: move folio zero operation to write_begin() Daniel Gomez
[not found] ` <CGME20240515055728eucas1p181e0ed81b2663eb0eee6d6134c1c1956@eucas1p1.samsung.com>
2024-05-15 5:57 ` [PATCH 04/12] shmem: exit shmem_get_folio_gfp() if block is uptodate Daniel Gomez
[not found] ` <CGME20240515055729eucas1p14e953424ad39bbb923c64163b1bbd4b3@eucas1p1.samsung.com>
2024-05-15 5:57 ` [PATCH 05/12] shmem: clear_highpage() if block is not uptodate Daniel Gomez
[not found] ` <CGME20240515055731eucas1p12cbbba88e24a011ef5871f90ff25ae73@eucas1p1.samsung.com>
2024-05-15 5:57 ` [PATCH 06/12] shmem: set folio uptodate when reclaim Daniel Gomez
[not found] ` <CGME20240515055732eucas1p2302bbca4d60e2e811a5c59e34f83628d@eucas1p2.samsung.com>
2024-05-15 5:57 ` [PATCH 07/12] shmem: check if a block is uptodate before splice into pipe Daniel Gomez
2024-05-16 13:19 ` kernel test robot
[not found] ` <CGME20240515055733eucas1p2804d2fb5f5bf7d6adb460054f6e9f4d8@eucas1p2.samsung.com>
2024-05-15 5:57 ` [PATCH 08/12] shmem: clear uptodate blocks after PUNCH_HOLE Daniel Gomez
[not found] ` <CGME20240515055735eucas1p2a967b4eebc8e059588cd62139f006b0d@eucas1p2.samsung.com>
2024-05-15 5:57 ` [PATCH 09/12] shmem: enable per-block uptodate Daniel Gomez
[not found] ` <CGME20240515055736eucas1p1bfa9549398e766532d143ba9314bee18@eucas1p1.samsung.com>
2024-05-15 5:57 ` [PATCH 10/12] shmem: add order arg to shmem_alloc_folio() Daniel Gomez
[not found] ` <CGME20240515055738eucas1p15335a32c790b731aa5857193bbddf92d@eucas1p1.samsung.com>
2024-05-15 5:57 ` [PATCH 11/12] shmem: add file length arg in shmem_get_folio() path Daniel Gomez
2024-05-15 17:47 ` kernel test robot
2024-05-17 16:17 ` Darrick J. Wong
2024-05-21 11:38 ` Daniel Gomez
2024-05-21 16:36 ` Darrick J. Wong
[not found] ` <CGME20240515055740eucas1p1bf112e73a7009a0f9b2bbf09c989a51b@eucas1p1.samsung.com>
2024-05-15 5:57 ` [PATCH 12/12] shmem: add large folio support to the write and fallocate paths Daniel Gomez
2024-05-15 18:59 ` kernel test robot
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