From: trondmy@kernel.org
To: linux-nfs@vger.kernel.org
Subject: [PATCH 06/12] NFS: Remove unnecessary kmap in nfs_readdir_xdr_to_array()
Date: Mon, 2 Nov 2020 13:06:52 -0500 [thread overview]
Message-ID: <20201102180658.6218-7-trondmy@kernel.org> (raw)
In-Reply-To: <20201102180658.6218-6-trondmy@kernel.org>
From: Trond Myklebust <trond.myklebust@hammerspace.com>
The kmapped pointer is only used once per loop to check if we need to
exit.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
fs/nfs/dir.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 6f84038735a1..560a9c1553e5 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -759,7 +759,6 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
struct page *pages[NFS_MAX_READDIR_PAGES];
struct nfs_entry entry;
struct file *file = desc->file;
- struct nfs_cache_array *array;
int status = -ENOMEM;
unsigned int array_size = ARRAY_SIZE(pages);
@@ -778,11 +777,9 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
goto out;
}
- array = kmap(page);
-
status = nfs_readdir_alloc_pages(pages, array_size);
if (status < 0)
- goto out_release_array;
+ goto out_release_label;
do {
unsigned int pglen;
status = nfs_readdir_xdr_filler(pages, desc, &entry, file, inode);
@@ -797,11 +794,10 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
}
status = nfs_readdir_page_filler(desc, &entry, pages, page, pglen);
- } while (!status && !nfs_readdir_array_is_full(array));
+ } while (!status && nfs_readdir_page_needs_filling(page));
nfs_readdir_free_pages(pages, array_size);
-out_release_array:
- kunmap(page);
+out_release_label:
nfs4_label_free(entry.label);
out:
nfs_free_fattr(entry.fattr);
--
2.28.0
next prev parent reply other threads:[~2020-11-02 18:17 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-02 18:06 [PATCH 00/12] Readdir enhancements trondmy
2020-11-02 18:06 ` [PATCH 01/12] NFS: Ensure contents of struct nfs_open_dir_context are consistent trondmy
2020-11-02 18:06 ` [PATCH 02/12] NFS: Clean up readdir struct nfs_cache_array trondmy
2020-11-02 18:06 ` [PATCH 03/12] NFS: Clean up nfs_readdir_page_filler() trondmy
2020-11-02 18:06 ` [PATCH 04/12] NFS: Clean up directory array handling trondmy
2020-11-02 18:06 ` [PATCH 05/12] NFS: Don't discard readdir results trondmy
2020-11-02 18:06 ` trondmy [this message]
2020-11-02 18:06 ` [PATCH 07/12] NFS: Replace kmap() with kmap_atomic() in nfs_readdir_search_array() trondmy
2020-11-02 18:06 ` [PATCH 08/12] NFS: Simplify struct nfs_cache_array_entry trondmy
2020-11-02 18:06 ` [PATCH 09/12] NFS: Support larger readdir buffers trondmy
2020-11-02 18:06 ` [PATCH 10/12] NFS: More readdir cleanups trondmy
2020-11-02 18:06 ` [PATCH 11/12] NFS: nfs_do_filldir() does not return a value trondmy
2020-11-02 18:06 ` [PATCH 12/12] NFS: Reduce readdir stack usage trondmy
2020-11-03 14:18 ` [PATCH 03/12] NFS: Clean up nfs_readdir_page_filler() Benjamin Coddington
2020-11-03 14:24 ` Benjamin Coddington
2020-11-03 13:35 ` [PATCH 02/12] NFS: Clean up readdir struct nfs_cache_array Benjamin Coddington
2020-11-03 14:09 ` Benjamin Coddington
2020-11-03 14:34 ` Benjamin Coddington
2020-11-02 20:40 ` [PATCH 00/12] Readdir enhancements David Wysochanski
2020-11-02 21:32 ` Trond Myklebust
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