From: David Howells <dhowells@redhat.com>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Jeff Layton <jlayton@redhat.com>,
dhowells@redhat.com, Jeff Layton <jlayton@kernel.org>,
Ilya Dryomov <idryomov@gmail.com>,
Dominique Martinet <asmadeus@codewreck.org>,
linux-fsdevel@vger.kernel.org, linux-cachefs@redhat.com,
v9fs-developer@lists.sourceforge.net,
linux-afs@lists.infradead.org, linux-nfs@vger.kernel.org,
linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org,
v9fs-developer@lists.sourceforge.net, devel@lists.orangefs.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 1/6] afs: Sort out symlink reading
Date: Tue, 02 Nov 2021 08:29:34 +0000 [thread overview]
Message-ID: <163584177409.4023316.13393356761592464422.stgit@warthog.procyon.org.uk> (raw)
In-Reply-To: <163584174921.4023316.8927114426959755223.stgit@warthog.procyon.org.uk>
afs_readpage() doesn't get a file pointer when called for a symlink, so
separate it from regular file pointer handling.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Link: https://lore.kernel.org/r/162687508008.276387.6418924257569297305.stgit@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/162981152280.1901565.2264055504466731917.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/163005742570.2472992.7800423440314043178.stgit@warthog.procyon.org.uk/ # v2
---
fs/afs/file.c | 14 +++++++++-----
fs/afs/inode.c | 6 +++---
fs/afs/internal.h | 3 ++-
3 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/fs/afs/file.c b/fs/afs/file.c
index e6c447ae91f3..eb11d047c0ae 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -19,6 +19,7 @@
static int afs_file_mmap(struct file *file, struct vm_area_struct *vma);
static int afs_readpage(struct file *file, struct page *page);
+static int afs_symlink_readpage(struct file *file, struct page *page);
static void afs_invalidatepage(struct page *page, unsigned int offset,
unsigned int length);
static int afs_releasepage(struct page *page, gfp_t gfp_flags);
@@ -49,7 +50,7 @@ const struct inode_operations afs_file_inode_operations = {
.permission = afs_permission,
};
-const struct address_space_operations afs_fs_aops = {
+const struct address_space_operations afs_file_aops = {
.readpage = afs_readpage,
.readahead = afs_readahead,
.set_page_dirty = afs_set_page_dirty,
@@ -62,6 +63,12 @@ const struct address_space_operations afs_fs_aops = {
.writepages = afs_writepages,
};
+const struct address_space_operations afs_symlink_aops = {
+ .readpage = afs_symlink_readpage,
+ .releasepage = afs_releasepage,
+ .invalidatepage = afs_invalidatepage,
+};
+
static const struct vm_operations_struct afs_vm_ops = {
.open = afs_vm_open,
.close = afs_vm_close,
@@ -313,7 +320,7 @@ static void afs_req_issue_op(struct netfs_read_subrequest *subreq)
afs_put_read(fsreq);
}
-static int afs_symlink_readpage(struct page *page)
+static int afs_symlink_readpage(struct file *file, struct page *page)
{
struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);
struct afs_read *fsreq;
@@ -378,9 +385,6 @@ const struct netfs_read_request_ops afs_req_ops = {
static int afs_readpage(struct file *file, struct page *page)
{
- if (!file)
- return afs_symlink_readpage(page);
-
return netfs_readpage(file, page, &afs_req_ops, NULL);
}
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 8fcffea2daf5..16906eb592d9 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -95,7 +95,7 @@ static int afs_inode_init_from_status(struct afs_operation *op,
inode->i_mode = S_IFREG | (status->mode & S_IALLUGO);
inode->i_op = &afs_file_inode_operations;
inode->i_fop = &afs_file_operations;
- inode->i_mapping->a_ops = &afs_fs_aops;
+ inode->i_mapping->a_ops = &afs_file_aops;
break;
case AFS_FTYPE_DIR:
inode->i_mode = S_IFDIR | (status->mode & S_IALLUGO);
@@ -113,11 +113,11 @@ static int afs_inode_init_from_status(struct afs_operation *op,
inode->i_mode = S_IFDIR | 0555;
inode->i_op = &afs_mntpt_inode_operations;
inode->i_fop = &afs_mntpt_file_operations;
- inode->i_mapping->a_ops = &afs_fs_aops;
+ inode->i_mapping->a_ops = &afs_symlink_aops;
} else {
inode->i_mode = S_IFLNK | status->mode;
inode->i_op = &afs_symlink_inode_operations;
- inode->i_mapping->a_ops = &afs_fs_aops;
+ inode->i_mapping->a_ops = &afs_symlink_aops;
}
inode_nohighmem(inode);
break;
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 0ad97a8fc0d4..9357c53faa69 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -1055,7 +1055,8 @@ extern void afs_dynroot_depopulate(struct super_block *);
/*
* file.c
*/
-extern const struct address_space_operations afs_fs_aops;
+extern const struct address_space_operations afs_file_aops;
+extern const struct address_space_operations afs_symlink_aops;
extern const struct inode_operations afs_file_inode_operations;
extern const struct file_operations afs_file_operations;
extern const struct netfs_read_request_ops afs_req_ops;
next prev parent reply other threads:[~2021-11-02 8:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-02 8:29 [PATCH v3 0/6] netfs, 9p, afs, ceph: Support folios, at least partially David Howells
2021-11-02 8:29 ` David Howells [this message]
2021-11-02 8:29 ` [PATCH v3 2/6] 9p: Convert to using the netfs helper lib to do reads and caching David Howells
2021-11-02 8:30 ` [PATCH v3 3/6] folio: Add a function to change the private data attached to a folio David Howells
2021-11-02 8:30 ` [PATCH v3 4/6] folio: Add a function to get the host inode for " David Howells
2021-11-03 13:16 ` Matthew Wilcox
2021-11-03 14:34 ` David Howells
2021-11-02 8:31 ` [PATCH v3 5/6] netfs, 9p, afs, ceph: Use folios David Howells
2021-11-03 14:21 ` Matthew Wilcox
2021-11-03 14:58 ` David Howells
2021-11-03 16:27 ` Matthew Wilcox
2021-11-04 14:32 ` David Howells
2021-11-03 16:00 ` [PATCH] folio: Add replacements for page_endio() David Howells
2021-11-02 8:31 ` [PATCH v3 6/6] afs: Use folios in directory handling David Howells
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