From: trondmy@kernel.org
To: linux-nfs@vger.kernel.org
Subject: [PATCH v10 12/26] NFS: Simplify nfs_readdir_xdr_to_array()
Date: Sun, 13 Mar 2022 13:05:43 -0400 [thread overview]
Message-ID: <20220313170557.5940-13-trondmy@kernel.org> (raw)
In-Reply-To: <20220313170557.5940-12-trondmy@kernel.org>
From: Trond Myklebust <trond.myklebust@hammerspace.com>
Recent changes to readdir mean that we can cope with partially filled
page cache entries, so we no longer need to rely on looping in
nfs_readdir_xdr_to_array().
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
fs/nfs/dir.c | 29 +++++++++++------------------
1 file changed, 11 insertions(+), 18 deletions(-)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 9998d7d17367..9d086ab4f889 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -889,6 +889,7 @@ static int nfs_readdir_xdr_to_array(struct nfs_readdir_descriptor *desc,
size_t array_size;
struct inode *inode = file_inode(desc->file);
unsigned int dtsize = desc->dtsize;
+ unsigned int pglen;
int status = -ENOMEM;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
@@ -906,28 +907,20 @@ static int nfs_readdir_xdr_to_array(struct nfs_readdir_descriptor *desc,
if (!pages)
goto out;
- do {
- unsigned int pglen;
- status = nfs_readdir_xdr_filler(desc, verf_arg, entry->cookie,
- pages, dtsize,
- verf_res);
- if (status < 0)
- break;
-
- pglen = status;
- if (pglen == 0) {
- nfs_readdir_page_set_eof(page);
- break;
- }
-
- verf_arg = verf_res;
+ status = nfs_readdir_xdr_filler(desc, verf_arg, entry->cookie, pages,
+ dtsize, verf_res);
+ if (status < 0)
+ goto free_pages;
+ pglen = status;
+ if (pglen != 0)
status = nfs_readdir_page_filler(desc, entry, pages, pglen,
arrays, narrays);
- desc->buffer_fills++;
- } while (!status && nfs_readdir_page_needs_filling(page) &&
- page_mapping(page));
+ else
+ nfs_readdir_page_set_eof(page);
+ desc->buffer_fills++;
+free_pages:
nfs_readdir_free_pages(pages, array_size);
out:
nfs_free_fattr(entry->fattr);
--
2.35.1
next prev parent reply other threads:[~2022-03-13 17:12 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-13 17:05 [PATCH v10 00/26] Readdir improvements trondmy
2022-03-13 17:05 ` [PATCH v10 01/26] NFS: Return valid errors from nfs2/3_decode_dirent() trondmy
2022-03-13 17:05 ` [PATCH v10 02/26] NFS: constify nfs_server_capable() and nfs_have_writebacks() trondmy
2022-03-13 17:05 ` [PATCH v10 03/26] NFS: Trace lookup revalidation failure trondmy
2022-03-13 17:05 ` [PATCH v10 04/26] NFS: Initialise the readdir verifier as best we can in nfs_opendir() trondmy
2022-03-13 17:05 ` [PATCH v10 05/26] NFS: Use kzalloc() to avoid initialising the nfs_open_dir_context trondmy
2022-03-13 17:05 ` [PATCH v10 06/26] NFS: Calculate page offsets algorithmically trondmy
2022-03-13 17:05 ` [PATCH v10 07/26] NFS: Store the change attribute in the directory page cache trondmy
2022-03-13 17:05 ` [PATCH v10 08/26] NFS: Don't re-read the entire page cache to find the next cookie trondmy
2022-03-13 17:05 ` [PATCH v10 09/26] NFS: Don't advance the page pointer unless the page is full trondmy
2022-03-13 17:05 ` [PATCH v10 10/26] NFS: Adjust the amount of readahead performed by NFS readdir trondmy
2022-03-13 17:05 ` [PATCH v10 11/26] NFS: If the cookie verifier changes, we must invalidate the page cache trondmy
2022-03-13 17:05 ` trondmy [this message]
2022-03-13 17:05 ` [PATCH v10 13/26] NFS: Reduce use of uncached readdir trondmy
2022-03-13 17:05 ` [PATCH v10 14/26] NFS: Improve heuristic for readdirplus trondmy
2022-03-13 17:05 ` [PATCH v10 15/26] NFS: Don't ask for readdirplus unless it can help nfs_getattr() trondmy
2022-03-13 17:05 ` [PATCH v10 16/26] NFSv4: Ask for a full XDR buffer of readdir goodness trondmy
2022-03-13 17:05 ` [PATCH v10 17/26] NFS: Readdirplus can't help lookup for case insensitive filesystems trondmy
2022-03-13 17:05 ` [PATCH v10 18/26] NFS: Don't request readdirplus when revalidation was forced trondmy
2022-03-13 17:05 ` [PATCH v10 19/26] NFS: Add basic readdir tracing trondmy
2022-03-13 17:05 ` [PATCH v10 20/26] NFS: Trace effects of readdirplus on the dcache trondmy
2022-03-13 17:05 ` [PATCH v10 21/26] NFS: Trace effects of the readdirplus heuristic trondmy
2022-03-13 17:05 ` [PATCH v10 22/26] NFS: Clean up page array initialisation/free trondmy
2022-03-13 17:05 ` [PATCH v10 23/26] NFS: Convert readdir page cache to use a cookie based index trondmy
2022-03-13 17:05 ` [PATCH v10 24/26] NFS: Fix up forced readdirplus trondmy
2022-03-13 17:05 ` [PATCH v10 25/26] NFS: Optimise away the previous cookie field trondmy
2022-03-13 17:05 ` [PATCH v10 26/26] NFS: Cache all entries in the readdirplus reply trondmy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220313170557.5940-13-trondmy@kernel.org \
--to=trondmy@kernel.org \
--cc=linux-nfs@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox