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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2022-02-22 22:23:12 +0100 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2022-03-02 14:43:38 +0100 |
| commit | 6c34f05b754622f473b546fd19ad3a89bd65bd89 (patch) | |
| tree | b5d586c64425cfa4cf366d938026244ff6525148 /fs/nfs | |
| parent | NFS: Adjust the amount of readahead performed by NFS readdir (diff) | |
| download | linux-6c34f05b754622f473b546fd19ad3a89bd65bd89.tar.xz linux-6c34f05b754622f473b546fd19ad3a89bd65bd89.zip | |
NFS: If the cookie verifier changes, we must invalidate the page cache
Ensure that if the cookie verifier changes when we use the zero-valued
cookie, then we invalidate any cached pages.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/dir.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 520dc3ec4aef..9998d7d17367 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -990,9 +990,14 @@ static int find_and_lock_cache_page(struct nfs_readdir_descriptor *desc) /* * Set the cookie verifier if the page cache was empty */ - if (desc->page_index == 0) + if (desc->last_cookie == 0 && + memcmp(nfsi->cookieverf, verf, sizeof(nfsi->cookieverf))) { memcpy(nfsi->cookieverf, verf, sizeof(nfsi->cookieverf)); + invalidate_inode_pages2_range(desc->file->f_mapping, + desc->page_index_max + 1, + -1); + } } res = nfs_readdir_search_array(desc); if (res == 0) |