From: trondmy@kernel.org
To: linux-nfs@vger.kernel.org
Subject: [PATCH v4 08/21] NFS: Remove unnecessary kmap in nfs_readdir_xdr_to_array()
Date: Sat, 7 Nov 2020 09:03:12 -0500 [thread overview]
Message-ID: <20201107140325.281678-9-trondmy@kernel.org> (raw)
In-Reply-To: <20201107140325.281678-8-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 f7248145c333..e8b0fcc1bc9e 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:[~2020-11-07 14:13 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-07 14:03 [PATCH v4 00/21] Readdir enhancements trondmy
2020-11-07 14:03 ` [PATCH v4 01/21] NFS: Remove unnecessary inode locking in nfs_llseek_dir() trondmy
2020-11-07 14:03 ` [PATCH v4 02/21] NFS: Remove unnecessary inode lock in nfs_fsync_dir() trondmy
2020-11-07 14:03 ` [PATCH v4 03/21] NFS: Ensure contents of struct nfs_open_dir_context are consistent trondmy
2020-11-07 14:03 ` [PATCH v4 04/21] NFS: Clean up readdir struct nfs_cache_array trondmy
2020-11-07 14:03 ` [PATCH v4 05/21] NFS: Clean up nfs_readdir_page_filler() trondmy
2020-11-07 14:03 ` [PATCH v4 06/21] NFS: Clean up directory array handling trondmy
2020-11-07 14:03 ` [PATCH v4 07/21] NFS: Don't discard readdir results trondmy
2020-11-07 14:03 ` trondmy [this message]
2020-11-07 14:03 ` [PATCH v4 09/21] NFS: Replace kmap() with kmap_atomic() in nfs_readdir_search_array() trondmy
2020-11-07 14:03 ` [PATCH v4 10/21] NFS: Simplify struct nfs_cache_array_entry trondmy
2020-11-07 14:03 ` [PATCH v4 11/21] NFS: Support larger readdir buffers trondmy
2020-11-07 14:03 ` [PATCH v4 12/21] NFS: More readdir cleanups trondmy
2020-11-07 14:03 ` [PATCH v4 13/21] NFS: nfs_do_filldir() does not return a value trondmy
2020-11-07 14:03 ` [PATCH v4 14/21] NFS: Reduce readdir stack usage trondmy
2020-11-07 14:03 ` [PATCH v4 15/21] NFS: Cleanup to remove nfs_readdir_descriptor_t typedef trondmy
2020-11-07 14:03 ` [PATCH v4 16/21] NFS: Allow the NFS generic code to pass in a verifier to readdir trondmy
2020-11-07 14:03 ` [PATCH v4 17/21] NFS: Handle NFS4ERR_NOT_SAME and NFSERR_BADCOOKIE from readdir calls trondmy
2020-11-07 14:03 ` [PATCH v4 18/21] NFS: Improve handling of directory verifiers trondmy
2020-11-07 14:03 ` [PATCH v4 19/21] NFS: Optimisations for monotonically increasing readdir cookies trondmy
2020-11-07 14:03 ` [PATCH v4 20/21] NFS: Reduce number of RPC calls when doing uncached readdir trondmy
2020-11-07 14:03 ` [PATCH v4 21/21] NFS: Do uncached readdir when we're seeking a cookie in an empty page cache trondmy
2020-11-09 21:41 ` Benjamin Coddington
2020-11-09 21:46 ` Trond Myklebust
2020-11-11 16:43 ` Benjamin Coddington
2020-11-11 17:34 ` Trond Myklebust
2020-11-11 19:53 ` Benjamin Coddington
2020-11-11 20:11 ` Trond Myklebust
2020-11-10 14:48 ` David Wysochanski
2020-11-10 20:55 ` Trond Myklebust
2020-11-09 20:59 ` [PATCH v4 20/21] NFS: Reduce number of RPC calls when doing uncached readdir Benjamin Coddington
2020-11-09 13:15 ` [PATCH v4 00/21] Readdir enhancements David Wysochanski
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