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authorTrond Myklebust <trond.myklebust@hammerspace.com>2021-03-26 04:07:21 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2021-04-13 03:11:44 +0300
commit13c0b082b6a90b1b87b5fb100983d05bcc75d9b6 (patch)
tree7659e4ff52383cd640fedf89f6057ade10b69788 /fs/nfs
parent1f3208b2d6975f31b9c7c6bf174b84fe9c97492f (diff)
downloadlinux-13c0b082b6a90b1b87b5fb100983d05bcc75d9b6.tar.xz
NFS: Replace use of NFS_INO_REVAL_PAGECACHE when checking cache validity
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>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/file.c2
-rw-r--r--fs/nfs/inode.c41
-rw-r--r--fs/nfs/nfs4proc.c5
-rw-r--r--fs/nfs/write.c2
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 @@ out:
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)