diff options
| author | Pranjal Shrivastava <praan@google.com> | 2026-08-14 14:32:52 +0000 |
|---|---|---|
| committer | Anna Schumaker <anna.schumaker@hammerspace.com> | 2026-10-05 09:46:39 -0400 |
| commit | 00ba5f7320d0416a38fda4c7ab3382a2eaed996a (patch) | |
| tree | 64881827c2c13d87c4065e576fa30856171868ea /include/linux | |
| parent | d91ae903f4764da43f570b8228de7ab2f79591e1 (diff) | |
nfs: track number of pinned pages in nfs_page
Track the number of pinned pages in nfs_page to handle unpinning
correctly, ensuring that only primary requests perform the final
unpinning operation, preventing subrequests from incorrectly
performing unpinning on behalf of their parent requests.
Add wb_nr_pinned to struct nfs_page to store the count of pinned pages
owned by the request. Update request creation and cleanup helpers to
initialize and use wb_nr_pinned for primary requests. Use the
nfs_page_array_len() helper to calculate the number of pages spanned
by a request's offset and length.
Signed-off-by: Pranjal Shrivastava <praan@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anna Schumaker <anna.schumaker@hammerspace.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/nfs_page.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index fd7aafe7cb54..080fa3e23580 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -59,6 +59,7 @@ struct nfs_page { struct nfs_page *wb_this_page; /* list of reqs for this page */ struct nfs_page *wb_head; /* head pointer for req list */ unsigned short wb_nio; /* Number of I/O attempts */ + unsigned int wb_nr_pinned; /* Number of pinned pages */ }; struct nfs_pgio_mirror; |