From c69bf479baa614f5e80a1ded355e752e15a52b72 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 6 Feb 2020 14:22:27 +0000 Subject: afs: Move key to afs_read struct Stash the key used to authenticate read operations in the afs_read struct. This will be necessary to reissue the operation against the server if a read from the cache fails in upcoming cache changes. Signed-off-by: David Howells Tested-By: Marc Dionne cc: linux-afs@lists.infradead.org cc: linux-cachefs@redhat.com cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/158861248336.340223.1851189950710196001.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/159465823899.1377938.11925978022348532049.stgit@warthog.procyon.org.uk/ Link: https://lore.kernel.org/r/160588529557.3465195.7303323479305254243.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161118147693.1232039.13780672951838643842.stgit@warthog.procyon.org.uk/ # rfc Link: https://lore.kernel.org/r/161161043340.2537118.511899217704140722.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161340406678.1303470.12676824086429446370.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/161539550819.286939.1268332875889175195.stgit@warthog.procyon.org.uk/ # v4 Link: https://lore.kernel.org/r/161653806683.2770958.11300984379283401542.stgit@warthog.procyon.org.uk/ # v5 Link: https://lore.kernel.org/r/161789089556.6155.14603302893431820997.stgit@warthog.procyon.org.uk/ # v6 --- fs/afs/file.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'fs/afs/file.c') diff --git a/fs/afs/file.c b/fs/afs/file.c index f1bae0b0a9c0..af6471defec3 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -198,6 +198,7 @@ void afs_put_read(struct afs_read *req) if (req->pages != req->array) kfree(req->pages); } + key_put(req->key); kfree(req); } } @@ -228,7 +229,7 @@ static const struct afs_operation_ops afs_fetch_data_operation = { /* * Fetch file data from the volume. */ -int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *req) +int afs_fetch_data(struct afs_vnode *vnode, struct afs_read *req) { struct afs_operation *op; @@ -237,9 +238,9 @@ int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *re vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique, - key_serial(key)); + key_serial(req->key)); - op = afs_alloc_operation(key, vnode->volume); + op = afs_alloc_operation(req->key, vnode->volume); if (IS_ERR(op)) return PTR_ERR(op); @@ -278,6 +279,7 @@ int afs_page_filler(void *data, struct page *page) * unmarshalling code will clear the unfilled space. */ refcount_set(&req->usage, 1); + req->key = key_get(key); req->pos = (loff_t)page->index << PAGE_SHIFT; req->len = PAGE_SIZE; req->nr_pages = 1; @@ -287,7 +289,7 @@ int afs_page_filler(void *data, struct page *page) /* read the contents of the file from the server into the * page */ - ret = afs_fetch_data(vnode, key, req); + ret = afs_fetch_data(vnode, req); afs_put_read(req); if (ret < 0) { @@ -372,7 +374,6 @@ static int afs_readpages_one(struct file *file, struct address_space *mapping, struct afs_read *req; struct list_head *p; struct page *first, *page; - struct key *key = afs_file_key(file); pgoff_t index; int ret, n, i; @@ -396,6 +397,7 @@ static int afs_readpages_one(struct file *file, struct address_space *mapping, refcount_set(&req->usage, 1); req->vnode = vnode; + req->key = key_get(afs_file_key(file)); req->page_done = afs_readpages_page_done; req->pos = first->index; req->pos <<= PAGE_SHIFT; @@ -425,11 +427,11 @@ static int afs_readpages_one(struct file *file, struct address_space *mapping, } while (req->nr_pages < n); if (req->nr_pages == 0) { - kfree(req); + afs_put_read(req); return 0; } - ret = afs_fetch_data(vnode, key, req); + ret = afs_fetch_data(vnode, req); if (ret < 0) goto error; -- cgit v1.2.3