linux-nfs.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: trondmy@kernel.org
To: linux-nfs@vger.kernel.org
Subject: [PATCH v2 10/26] NFS: Replace use of NFS_INO_REVAL_PAGECACHE when checking cache validity
Date: Wed, 14 Apr 2021 09:43:37 -0400	[thread overview]
Message-ID: <20210414134353.11860-11-trondmy@kernel.org> (raw)
In-Reply-To: <20210414134353.11860-10-trondmy@kernel.org>

From: Trond Myklebust <trond.myklebust@hammerspace.com>

When checking cache validity, be more specific than just 'we want to
check the page cache validity'. In almost all cases, we want to check
that change attribute, and possibly also the size.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
 fs/nfs/file.c     |  2 +-
 fs/nfs/inode.c    | 41 ++++++++++++-----------------------------
 fs/nfs/nfs4proc.c |  5 ++---
 fs/nfs/write.c    |  2 +-
 4 files changed, 16 insertions(+), 34 deletions(-)

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 16ad5050e046..1fef107961bc 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -105,7 +105,7 @@ static int nfs_revalidate_file_size(struct inode *inode, struct file *filp)
 
 	if (filp->f_flags & O_DIRECT)
 		goto force_reval;
-	if (nfs_check_cache_invalid(inode, NFS_INO_REVAL_PAGECACHE))
+	if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_SIZE))
 		goto force_reval;
 	return 0;
 force_reval:
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index b9aac408f03a..aec402d048eb 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -164,34 +164,19 @@ static int nfs_attribute_timeout(struct inode *inode)
 	return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
 }
 
-static bool nfs_check_cache_invalid_delegated(struct inode *inode, unsigned long flags)
+static bool nfs_check_cache_flags_invalid(struct inode *inode,
+					  unsigned long flags)
 {
 	unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
 
-	/* Special case for the pagecache or access cache */
-	if (flags == NFS_INO_REVAL_PAGECACHE &&
-	    !(cache_validity & NFS_INO_REVAL_FORCED))
-		return false;
 	return (cache_validity & flags) != 0;
 }
 
-static bool nfs_check_cache_invalid_not_delegated(struct inode *inode, unsigned long flags)
-{
-	unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
-
-	if ((cache_validity & flags) != 0)
-		return true;
-	if (nfs_attribute_timeout(inode))
-		return true;
-	return false;
-}
-
 bool nfs_check_cache_invalid(struct inode *inode, unsigned long flags)
 {
-	if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
-		return nfs_check_cache_invalid_delegated(inode, flags);
-
-	return nfs_check_cache_invalid_not_delegated(inode, flags);
+	if (nfs_check_cache_flags_invalid(inode, flags))
+		return true;
+	return nfs_attribute_cache_expired(inode);
 }
 EXPORT_SYMBOL_GPL(nfs_check_cache_invalid);
 
@@ -809,14 +794,12 @@ static u32 nfs_get_valid_attrmask(struct inode *inode)
 
 	if (!(cache_validity & NFS_INO_INVALID_ATIME))
 		reply_mask |= STATX_ATIME;
-	if (!(cache_validity & NFS_INO_REVAL_PAGECACHE)) {
-		if (!(cache_validity & NFS_INO_INVALID_CTIME))
-			reply_mask |= STATX_CTIME;
-		if (!(cache_validity & NFS_INO_INVALID_MTIME))
-			reply_mask |= STATX_MTIME;
-		if (!(cache_validity & NFS_INO_INVALID_SIZE))
-			reply_mask |= STATX_SIZE;
-	}
+	if (!(cache_validity & NFS_INO_INVALID_CTIME))
+		reply_mask |= STATX_CTIME;
+	if (!(cache_validity & NFS_INO_INVALID_MTIME))
+		reply_mask |= STATX_MTIME;
+	if (!(cache_validity & NFS_INO_INVALID_SIZE))
+		reply_mask |= STATX_SIZE;
 	if (!(cache_validity & NFS_INO_INVALID_OTHER))
 		reply_mask |= STATX_UID | STATX_GID | STATX_MODE | STATX_NLINK;
 	if (!(cache_validity & NFS_INO_INVALID_BLOCKS))
@@ -1362,7 +1345,7 @@ int nfs_clear_invalid_mapping(struct address_space *mapping)
 
 bool nfs_mapping_need_revalidate_inode(struct inode *inode)
 {
-	return nfs_check_cache_invalid(inode, NFS_INO_REVAL_PAGECACHE) ||
+	return nfs_check_cache_invalid(inode, NFS_INO_INVALID_CHANGE) ||
 		NFS_STALE(inode);
 }
 
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 6b990fe5bc1f..a21311520404 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -5429,7 +5429,7 @@ static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], const __u32 *src,
 
 	memcpy(bitmask, src, sizeof(*bitmask) * NFS4_BITMASK_SZ);
 
-	if (cache_validity & (NFS_INO_INVALID_CHANGE | NFS_INO_REVAL_PAGECACHE))
+	if (cache_validity & NFS_INO_INVALID_CHANGE)
 		bitmask[0] |= FATTR4_WORD0_CHANGE;
 	if (cache_validity & NFS_INO_INVALID_ATIME)
 		bitmask[1] |= FATTR4_WORD1_TIME_ACCESS;
@@ -5449,8 +5449,7 @@ static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], const __u32 *src,
 	if (nfs4_have_delegation(inode, FMODE_READ) &&
 	    !(cache_validity & NFS_INO_REVAL_FORCED))
 		bitmask[0] &= ~FATTR4_WORD0_SIZE;
-	else if (cache_validity &
-		 (NFS_INO_INVALID_SIZE | NFS_INO_REVAL_PAGECACHE))
+	else if (cache_validity & NFS_INO_INVALID_SIZE)
 		bitmask[0] |= FATTR4_WORD0_SIZE;
 
 	for (i = 0; i < NFS4_BITMASK_SZ; i++)
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index f05a90338a76..7a39b3d424da 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1293,7 +1293,7 @@ static bool nfs_write_pageuptodate(struct page *page, struct inode *inode,
 	if (nfs_have_delegated_attributes(inode))
 		goto out;
 	if (nfsi->cache_validity &
-	    (NFS_INO_REVAL_PAGECACHE | NFS_INO_INVALID_SIZE))
+	    (NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_SIZE))
 		return false;
 	smp_rmb();
 	if (test_bit(NFS_INO_INVALIDATING, &nfsi->flags) && pagelen != 0)
-- 
2.30.2


  reply	other threads:[~2021-04-14 13:44 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-14 13:43 [PATCH v2 00/26] Attribute revalidation updates trondmy
2021-04-14 13:43 ` [PATCH v2 01/26] NFS: Deal correctly with attribute generation counter overflow trondmy
2021-04-14 13:43   ` [PATCH v2 02/26] NFS: Fix up inode cache tracing trondmy
2021-04-14 13:43     ` [PATCH v2 03/26] NFS: Mask out unsupported attributes in nfs_getattr() trondmy
2021-04-14 13:43       ` [PATCH v2 04/26] NFS: NFS_INO_REVAL_PAGECACHE should mark the change attribute invalid trondmy
2021-04-14 13:43         ` [PATCH v2 05/26] NFS: Fix up revalidation of space used trondmy
2021-04-14 13:43           ` [PATCH v2 06/26] NFS: Don't revalidate attributes that are not being asked for trondmy
2021-04-14 13:43             ` [PATCH v2 07/26] NFS: Fix up statx() results trondmy
2021-04-14 13:43               ` [PATCH v2 08/26] NFS: nfs_setattr_update_inode() should clear the suid/sgid bits trondmy
2021-04-14 13:43                 ` [PATCH v2 09/26] NFS: Add a cache validity flag argument to nfs_revalidate_inode() trondmy
2021-04-14 13:43                   ` trondmy [this message]
2021-04-14 13:43                     ` [PATCH v2 11/26] NFS: Don't set NFS_INO_REVAL_PAGECACHE in the inode cache validity trondmy
2021-04-14 13:43                       ` [PATCH v2 12/26] NFSv4: Fix nfs4_bitmap_copy_adjust() trondmy
2021-04-14 13:43                         ` [PATCH v2 13/26] NFS: Separate tracking of file nlinks cache validity from the mode/uid/gid trondmy
2021-04-14 13:43                           ` [PATCH v2 14/26] NFS: Separate tracking of file mode cache validity from the uid/gid trondmy
2021-04-14 13:43                             ` [PATCH v2 15/26] NFS: Fix up handling of outstanding layoutcommit in nfs_update_inode() trondmy
2021-04-14 13:43                               ` [PATCH v2 16/26] NFS: Remove a line of code that has no effect " trondmy
2021-04-14 13:43                                 ` [PATCH v2 17/26] NFS: Simplify cache consistency in nfs_check_inode_attributes() trondmy
2021-04-14 13:43                                   ` [PATCH v2 18/26] NFSv4: Fix value of decode_fsinfo_maxsz trondmy
2021-04-14 13:43                                     ` [PATCH v2 19/26] NFSv4: Don't modify the change attribute cached in the inode trondmy
2021-04-14 13:43                                       ` [PATCH v2 20/26] NFSv4: Add support for the NFSv4.2 "change_attr_type" attribute trondmy
2021-04-14 13:43                                         ` [PATCH v2 21/26] NFS: Use information about the change attribute to optimise updates trondmy
2021-04-14 13:43                                           ` [PATCH v2 22/26] NFS: Another inode revalidation improvement trondmy
2021-04-14 13:43                                             ` [PATCH v2 23/26] NFSv4: nfs4_inc/dec_nlink_locked should also invalidate ctime trondmy
2021-04-14 13:43                                               ` [PATCH v2 24/26] NFSv4: link must update the inode nlink trondmy
2021-04-14 13:43                                                 ` [PATCH v2 25/26] NFS: Don't store NFS_INO_REVAL_FORCED trondmy
2021-04-14 13:43                                                   ` [PATCH v2 26/26] NFS: Split attribute support out from the server capabilities 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=20210414134353.11860-11-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;
as well as URLs for NNTP newsgroup(s).