* [f2fs-dev] [PATCH 5.15.y] f2fs: fix to wait on block writeback for post_read case
@ 2026-03-17 2:39 ` Robert Garcia
0 siblings, 0 replies; 3+ messages in thread
From: Robert Garcia @ 2026-03-17 2:39 UTC (permalink / raw)
To: stable, Chao Yu
Cc: Robert Garcia, Jaegeuk Kim, linux-kernel, linux-f2fs-devel
From: Chao Yu <chao@kernel.org>
[ Upstream commit 55fdc1c24a1d6229fe0ecf31335fb9a2eceaaa00 ]
If inode is compressed, but not encrypted, it missed to call
f2fs_wait_on_block_writeback() to wait for GCed page writeback
in IPU write path.
Thread A GC-Thread
- f2fs_gc
- do_garbage_collect
- gc_data_segment
- move_data_block
- f2fs_submit_page_write
migrate normal cluster's block via
meta_inode's page cache
- f2fs_write_single_data_page
- f2fs_do_write_data_page
- f2fs_inplace_write_data
- f2fs_submit_page_bio
IRQ
- f2fs_read_end_io
IRQ
old data overrides new data due to
out-of-order GC and common IO.
- f2fs_read_end_io
Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
[ Minor context change fixed. ]
Signed-off-by: Robert Garcia <rob_garcia@163.com>
---
fs/f2fs/data.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 887e286d2c32..39c633fa162c 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2537,9 +2537,6 @@ int f2fs_encrypt_one_page(struct f2fs_io_info *fio)
page = fio->compressed_page ? fio->compressed_page : fio->page;
- /* wait for GCed page writeback via META_MAPPING */
- f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
-
if (fscrypt_inode_uses_inline_crypto(inode))
return 0;
@@ -2718,6 +2715,11 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
err = -EFSCORRUPTED;
goto out_writepage;
}
+
+ /* wait for GCed page writeback via META_MAPPING */
+ if (fio->post_read)
+ f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
+
/*
* If current allocation needs SSR,
* it had better in-place writes for updated data.
--
2.34.1
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https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH 5.15.y] f2fs: fix to wait on block writeback for post_read case
@ 2026-03-17 2:39 ` Robert Garcia
0 siblings, 0 replies; 3+ messages in thread
From: Robert Garcia @ 2026-03-17 2:39 UTC (permalink / raw)
To: stable, Chao Yu
Cc: Jaegeuk Kim, linux-f2fs-devel, Robert Garcia, linux-kernel
From: Chao Yu <chao@kernel.org>
[ Upstream commit 55fdc1c24a1d6229fe0ecf31335fb9a2eceaaa00 ]
If inode is compressed, but not encrypted, it missed to call
f2fs_wait_on_block_writeback() to wait for GCed page writeback
in IPU write path.
Thread A GC-Thread
- f2fs_gc
- do_garbage_collect
- gc_data_segment
- move_data_block
- f2fs_submit_page_write
migrate normal cluster's block via
meta_inode's page cache
- f2fs_write_single_data_page
- f2fs_do_write_data_page
- f2fs_inplace_write_data
- f2fs_submit_page_bio
IRQ
- f2fs_read_end_io
IRQ
old data overrides new data due to
out-of-order GC and common IO.
- f2fs_read_end_io
Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
[ Minor context change fixed. ]
Signed-off-by: Robert Garcia <rob_garcia@163.com>
---
fs/f2fs/data.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 887e286d2c32..39c633fa162c 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2537,9 +2537,6 @@ int f2fs_encrypt_one_page(struct f2fs_io_info *fio)
page = fio->compressed_page ? fio->compressed_page : fio->page;
- /* wait for GCed page writeback via META_MAPPING */
- f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
-
if (fscrypt_inode_uses_inline_crypto(inode))
return 0;
@@ -2718,6 +2715,11 @@ int f2fs_do_write_data_page(struct f2fs_io_info *fio)
err = -EFSCORRUPTED;
goto out_writepage;
}
+
+ /* wait for GCed page writeback via META_MAPPING */
+ if (fio->post_read)
+ f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
+
/*
* If current allocation needs SSR,
* it had better in-place writes for updated data.
--
2.34.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* [f2fs-dev] Patch "f2fs: fix to wait on block writeback for post_read case" has been added to the 5.15-stable tree
2026-03-17 2:39 ` Robert Garcia
(?)
@ 2026-04-23 11:50 ` gregkh
-1 siblings, 0 replies; 3+ messages in thread
From: gregkh @ 2026-04-23 11:50 UTC (permalink / raw)
To: chao, gregkh, jaegeuk, linux-f2fs-devel, rob_garcia; +Cc: stable-commits
This is a note to let you know that I've just added the patch titled
f2fs: fix to wait on block writeback for post_read case
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-fix-to-wait-on-block-writeback-for-post_read-case.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
From stable+bounces-225733-greg=kroah.com@vger.kernel.org Tue Mar 17 03:41:01 2026
From: Robert Garcia <rob_garcia@163.com>
Date: Tue, 17 Mar 2026 10:39:33 +0800
Subject: f2fs: fix to wait on block writeback for post_read case
To: stable@vger.kernel.org, Chao Yu <chao@kernel.org>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>, linux-f2fs-devel@lists.sourceforge.net, Robert Garcia <rob_garcia@163.com>, linux-kernel@vger.kernel.org
Message-ID: <20260317023933.1654240-1-rob_garcia@163.com>
From: Chao Yu <chao@kernel.org>
[ Upstream commit 55fdc1c24a1d6229fe0ecf31335fb9a2eceaaa00 ]
If inode is compressed, but not encrypted, it missed to call
f2fs_wait_on_block_writeback() to wait for GCed page writeback
in IPU write path.
Thread A GC-Thread
- f2fs_gc
- do_garbage_collect
- gc_data_segment
- move_data_block
- f2fs_submit_page_write
migrate normal cluster's block via
meta_inode's page cache
- f2fs_write_single_data_page
- f2fs_do_write_data_page
- f2fs_inplace_write_data
- f2fs_submit_page_bio
IRQ
- f2fs_read_end_io
IRQ
old data overrides new data due to
out-of-order GC and common IO.
- f2fs_read_end_io
Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
[ Minor context change fixed. ]
Signed-off-by: Robert Garcia <rob_garcia@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/f2fs/data.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2537,9 +2537,6 @@ int f2fs_encrypt_one_page(struct f2fs_io
page = fio->compressed_page ? fio->compressed_page : fio->page;
- /* wait for GCed page writeback via META_MAPPING */
- f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
-
if (fscrypt_inode_uses_inline_crypto(inode))
return 0;
@@ -2718,6 +2715,11 @@ got_it:
err = -EFSCORRUPTED;
goto out_writepage;
}
+
+ /* wait for GCed page writeback via META_MAPPING */
+ if (fio->post_read)
+ f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
+
/*
* If current allocation needs SSR,
* it had better in-place writes for updated data.
Patches currently in stable-queue which might be from rob_garcia@163.com are
queue-5.15/sunrpc-lock-against-sock-changing-during-sysfs-read.patch
queue-5.15/smb-client-fix-potential-uaf-in-smb2_is_valid_oplock.patch
queue-5.15/pstore-inode-only-d_invalidate-is-needed.patch
queue-5.15/wifi-iwlwifi-read-txq-read_ptr-under-lock.patch
queue-5.15/alsa-control-avoid-warn-for-symlink-errors.patch
queue-5.15/binfmt_misc-restore-write-access-before-closing-files-opened-by-open_exec.patch
queue-5.15/spi-cadence-quadspi-implement-refcount-to-handle-unbind-during-busy.patch
queue-5.15/f2fs-fix-to-wait-on-block-writeback-for-post_read-case.patch
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
^ permalink raw reply [flat|nested] 3+ messages in thread
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2026-03-17 2:39 [f2fs-dev] [PATCH 5.15.y] f2fs: fix to wait on block writeback for post_read case Robert Garcia
2026-03-17 2:39 ` Robert Garcia
2026-04-23 11:50 ` [f2fs-dev] Patch "f2fs: fix to wait on block writeback for post_read case" has been added to the 5.15-stable tree gregkh
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