5.15-stable review patch. If anyone has any objections, please let me know.
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From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit 427f5f83a3191cbf024c5aea6e5b601cdf88d895 ]
The documenting comment for struct nf_file states:
/* * A representation of a file that has been opened by knfsd. These are hashed * in the hashtable by inode pointer value. Note that this object doesn't * hold a reference to the inode by itself, so the nf_inode pointer should * never be dereferenced, only used for comparison. */
Replace the two existing dereferences to make the comment always true.
Reviewed-by: Jeff Layton jlayton@kernel.org Signed-off-by: Chuck Lever chuck.lever@oracle.com --- fs/nfsd/filecache.c | 5 ++--- fs/nfsd/filecache.h | 2 +- fs/nfsd/nfs4state.c | 2 +- 3 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index 7ad27655db699..55478d411e5a0 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -227,12 +227,11 @@ nfsd_file_mark_put(struct nfsd_file_mark *nfm) }
static struct nfsd_file_mark * -nfsd_file_mark_find_or_create(struct nfsd_file *nf) +nfsd_file_mark_find_or_create(struct nfsd_file *nf, struct inode *inode) { int err; struct fsnotify_mark *mark; struct nfsd_file_mark *nfm = NULL, *new; - struct inode *inode = nf->nf_inode;
do { fsnotify_group_lock(nfsd_file_fsnotify_group); @@ -1143,7 +1142,7 @@ nfsd_file_do_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp,
open_file: trace_nfsd_file_alloc(nf); - nf->nf_mark = nfsd_file_mark_find_or_create(nf); + nf->nf_mark = nfsd_file_mark_find_or_create(nf, key.inode); if (nf->nf_mark) { if (open) { status = nfsd_open_verified(rqstp, fhp, may_flags, diff --git a/fs/nfsd/filecache.h b/fs/nfsd/filecache.h index 28145f1628923..8e8c0c47d67df 100644 --- a/fs/nfsd/filecache.h +++ b/fs/nfsd/filecache.h @@ -39,7 +39,7 @@ struct nfsd_file { #define NFSD_FILE_PENDING (1) #define NFSD_FILE_REFERENCED (2) unsigned long nf_flags; - struct inode *nf_inode; + struct inode *nf_inode; /* don't deref */ refcount_t nf_ref; unsigned char nf_may; struct nfsd_file_mark *nf_mark; diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 923eec2716d75..9d344164f814f 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -2577,7 +2577,7 @@ static void nfs4_show_fname(struct seq_file *s, struct nfsd_file *f)
static void nfs4_show_superblock(struct seq_file *s, struct nfsd_file *f) { - struct inode *inode = f->nf_inode; + struct inode *inode = file_inode(f->nf_file);
seq_printf(s, "superblock: "%02x:%02x:%ld"", MAJOR(inode->i_sb->s_dev),