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| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-01-13 13:18:45 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-01-24 22:36:27 +0800 |
| commit | e33f42b20bcb2f55cb1eeeab9956a503dcf36107 (patch) | |
| tree | 951d31f910e07f8f18679624c0c88272c2efb9a0 /fs/erofs/data.c | |
| parent | e783362eb54cd99b2cac8b3a9aeac942e6f6ac07 (diff) | |
| download | linux-e33f42b20bcb2f55cb1eeeab9956a503dcf36107.tar.gz linux-e33f42b20bcb2f55cb1eeeab9956a503dcf36107.tar.bz2 linux-e33f42b20bcb2f55cb1eeeab9956a503dcf36107.zip | |
erofs: fix fsdax partition offset handling
After seeking time on testing today upstream fsdax, I found it
actually doesn't work well as below:
[ 186.492983] ------------[ cut here ]------------
[ 186.493629] WARNING: CPU: 1 PID: 205 at fs/iomap/iter.c:33 iomap_iter+0x2f6/0x310
The problem is that m_dax_part_off should be applied to physical
addresses and very sorry about that I didn't catch this eariler.
Anyway, let's fix it up now. Also, I need to find a way to set up
a standalone testcase to look after this later.
Link: https://lore.kernel.org/r/20220113051845.244461-1-hsiangkao@linux.alibaba.com
Fixes: de2051147771 ("fsdax: shift partition offset handling into the file systems")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/data.c')
| -rw-r--r-- | fs/erofs/data.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/erofs/data.c b/fs/erofs/data.c index fa7ddb7ad980..226a57c57ee6 100644 --- a/fs/erofs/data.c +++ b/fs/erofs/data.c @@ -252,12 +252,10 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, return ret; iomap->offset = map.m_la; - if (flags & IOMAP_DAX) { + if (flags & IOMAP_DAX) iomap->dax_dev = mdev.m_daxdev; - iomap->offset += mdev.m_dax_part_off; - } else { + else iomap->bdev = mdev.m_bdev; - } iomap->length = map.m_llen; iomap->flags = 0; iomap->private = NULL; @@ -284,6 +282,8 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, } else { iomap->type = IOMAP_MAPPED; iomap->addr = mdev.m_pa; + if (flags & IOMAP_DAX) + iomap->addr += mdev.m_dax_part_off; } return 0; } |