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pnfs/blocklayout: fix last_write_offset incorrectly set to page boundary 

Commit 41963c10c4 sets the block layout's
last written byte to the offset of the end of the extent rather than the
end of the write which incorrectly updates the inode's size for
partial-page writes.

Fixes: 41963c10c4 ("pnfs/blocklayout: update last_write_offset atomically with extents")
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org # 4.8+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Benjamin Coddington 2016-10-11 15:53:21 -04:00 committed by Anna Schumaker
parent 3f807e5ae5
commit a3f9d1b58a
1 changed files with 2 additions and 1 deletions
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3
fs/nfs/blocklayout/blocklayout.c
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@ -344,9 +344,10 @@ static void bl_write_cleanup(struct work_struct *work)
u64 start = hdr->args.offset & (loff_t)PAGE_MASK;
u64 end = (hdr->args.offset + hdr->args.count +
PAGE_SIZE - 1) & (loff_t)PAGE_MASK;
u64 lwb = hdr->args.offset + hdr->args.count;
ext_tree_mark_written(bl, start >> SECTOR_SHIFT,
(end - start) >> SECTOR_SHIFT, end);
(end - start) >> SECTOR_SHIFT, lwb);
}
pnfs_ld_write_done(hdr);