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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-11-26 12:25:49 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-11-26 12:25:49 -0800 |
| commit | e5f3ec38c8496dd7f6ada8a5e8d4958ef46ddb3f (patch) | |
| tree | 48a50770f899bed84e7168402c9a7ba83e8c0de7 | |
| parent | 644e9524388a5dbc6d4f58c492ee9ef7bd4ddf4d (diff) | |
| parent | ac8db824ead0de2e9111337c401409d010fba2f0 (diff) | |
| download | linux-e5f3ec38c8496dd7f6ada8a5e8d4958ef46ddb3f.tar.bz2 | |
Merge tag 'nfsd-6.1-6' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd fix from Chuck Lever:
- Fix rare data corruption on READ operations
* tag 'nfsd-6.1-6' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
NFSD: Fix reads with a non-zero offset that don't end on a page boundary
| -rw-r--r-- | fs/nfsd/vfs.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index f650afedd67f..ac3c3844cfc6 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -871,10 +871,11 @@ nfsd_splice_actor(struct pipe_inode_info *pipe, struct pipe_buffer *buf, struct svc_rqst *rqstp = sd->u.data; struct page *page = buf->page; // may be a compound one unsigned offset = buf->offset; + struct page *last_page; - page += offset / PAGE_SIZE; - for (int i = sd->len; i > 0; i -= PAGE_SIZE) - svc_rqst_replace_page(rqstp, page++); + last_page = page + (offset + sd->len - 1) / PAGE_SIZE; + for (page += offset / PAGE_SIZE; page <= last_page; page++) + svc_rqst_replace_page(rqstp, page); if (rqstp->rq_res.page_len == 0) // first call rqstp->rq_res.page_base = offset % PAGE_SIZE; rqstp->rq_res.page_len += sd->len; |