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author | 2021-08-11 09:49:13 +0100 | |
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committer | 2021-11-10 21:16:56 +0000 | |
commit | 78525c74d9e7d1a6ce69bd4388f045f6e474a20b (patch) | |
tree | 53b2a3a3f9577e71c98d0654ad5d816720f4bee2 /fs/ceph | |
parent | folio: Add a function to get the host inode for a folio (diff) | |
download | linux-78525c74d9e7d1a6ce69bd4388f045f6e474a20b.tar.gz linux-78525c74d9e7d1a6ce69bd4388f045f6e474a20b.tar.bz2 linux-78525c74d9e7d1a6ce69bd4388f045f6e474a20b.zip |
netfs, 9p, afs, ceph: Use folios
Convert the netfs helper library to use folios throughout, convert the 9p
and afs filesystems to use folios in their file I/O paths and convert the
ceph filesystem to use just enough folios to compile.
With these changes, afs passes -g quick xfstests.
Changes
=======
ver #5:
- Got rid of folio_end{io,_read,_write}() and inlined the stuff it does
instead (Willy decided he didn't want this after all).
ver #4:
- Fixed a bug in afs_redirty_page() whereby it didn't set the next page
index in the loop and returned too early.
- Simplified a check in v9fs_vfs_write_folio_locked()[1].
- Undid a change to afs_symlink_readpage()[1].
- Used offset_in_folio() in afs_write_end()[1].
- Changed from using page_endio() to folio_end{io,_read,_write}()[1].
ver #2:
- Add 9p foliation.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Dominique Martinet <asmadeus@codewreck.org>
Tested-by: kafs-testing@auristor.com
cc: Matthew Wilcox (Oracle) <willy@infradead.org>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: Dominique Martinet <asmadeus@codewreck.org>
cc: v9fs-developer@lists.sourceforge.net
cc: linux-afs@lists.infradead.org
cc: ceph-devel@vger.kernel.org
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/YYKa3bfQZxK5/wDN@casper.infradead.org/ [1]
Link: https://lore.kernel.org/r/2408234.1628687271@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/162877311459.3085614.10601478228012245108.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/162981153551.1901565.3124454657133703341.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/163005745264.2472992.9852048135392188995.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163584187452.4023316.500389675405550116.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/163649328026.309189.1124218109373941936.stgit@warthog.procyon.org.uk/ # v4
Link: https://lore.kernel.org/r/163657852454.834781.9265101983152100556.stgit@warthog.procyon.org.uk/ # v5
Diffstat (limited to 'fs/ceph')
-rw-r--r-- | fs/ceph/addr.c | 80 |
1 files changed, 43 insertions, 37 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 99b80b5c7a93..04bbe853bcb1 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -63,7 +63,7 @@ (CONGESTION_ON_THRESH(congestion_kb) >> 2)) static int ceph_netfs_check_write_begin(struct file *file, loff_t pos, unsigned int len, - struct page *page, void **_fsdata); + struct folio *folio, void **_fsdata); static inline struct ceph_snap_context *page_snap_context(struct page *page) { @@ -317,13 +317,14 @@ static const struct netfs_read_request_ops ceph_netfs_read_ops = { }; /* read a single page, without unlocking it. */ -static int ceph_readpage(struct file *file, struct page *page) +static int ceph_readpage(struct file *file, struct page *subpage) { + struct folio *folio = page_folio(subpage); struct inode *inode = file_inode(file); struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_vino vino = ceph_vino(inode); - u64 off = page_offset(page); - u64 len = thp_size(page); + size_t len = folio_size(folio); + u64 off = folio_file_pos(folio); if (ci->i_inline_version != CEPH_INLINE_NONE) { /* @@ -331,19 +332,19 @@ static int ceph_readpage(struct file *file, struct page *page) * into page cache while getting Fcr caps. */ if (off == 0) { - unlock_page(page); + folio_unlock(folio); return -EINVAL; } - zero_user_segment(page, 0, thp_size(page)); - SetPageUptodate(page); - unlock_page(page); + zero_user_segment(&folio->page, 0, folio_size(folio)); + folio_mark_uptodate(folio); + folio_unlock(folio); return 0; } - dout("readpage ino %llx.%llx file %p off %llu len %llu page %p index %lu\n", - vino.ino, vino.snap, file, off, len, page, page->index); + dout("readpage ino %llx.%llx file %p off %llu len %zu folio %p index %lu\n", + vino.ino, vino.snap, file, off, len, folio, folio_index(folio)); - return netfs_readpage(file, page, &ceph_netfs_read_ops, NULL); + return netfs_readpage(file, folio, &ceph_netfs_read_ops, NULL); } static void ceph_readahead(struct readahead_control *ractl) @@ -1187,18 +1188,18 @@ ceph_find_incompatible(struct page *page) } static int ceph_netfs_check_write_begin(struct file *file, loff_t pos, unsigned int len, - struct page *page, void **_fsdata) + struct folio *folio, void **_fsdata) { struct inode *inode = file_inode(file); struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_snap_context *snapc; - snapc = ceph_find_incompatible(page); + snapc = ceph_find_incompatible(folio_page(folio, 0)); if (snapc) { int r; - unlock_page(page); - put_page(page); + folio_unlock(folio); + folio_put(folio); if (IS_ERR(snapc)) return PTR_ERR(snapc); @@ -1216,12 +1217,12 @@ static int ceph_netfs_check_write_begin(struct file *file, loff_t pos, unsigned * clean, or already dirty within the same snap context. */ static int ceph_write_begin(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned flags, + loff_t pos, unsigned len, unsigned aop_flags, struct page **pagep, void **fsdata) { struct inode *inode = file_inode(file); struct ceph_inode_info *ci = ceph_inode(inode); - struct page *page = NULL; + struct folio *folio = NULL; pgoff_t index = pos >> PAGE_SHIFT; int r; @@ -1230,39 +1231,43 @@ static int ceph_write_begin(struct file *file, struct address_space *mapping, * for inline_version sent to the MDS. */ if (ci->i_inline_version != CEPH_INLINE_NONE) { - page = grab_cache_page_write_begin(mapping, index, flags); - if (!page) + unsigned int fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE; + if (aop_flags & AOP_FLAG_NOFS) + fgp_flags |= FGP_NOFS; + folio = __filemap_get_folio(mapping, index, fgp_flags, + mapping_gfp_mask(mapping)); + if (!folio) return -ENOMEM; /* * The inline_version on a new inode is set to 1. If that's the - * case, then the page is brand new and isn't yet Uptodate. + * case, then the folio is brand new and isn't yet Uptodate. */ r = 0; if (index == 0 && ci->i_inline_version != 1) { - if (!PageUptodate(page)) { + if (!folio_test_uptodate(folio)) { WARN_ONCE(1, "ceph: write_begin called on still-inlined inode (inline_version %llu)!\n", ci->i_inline_version); r = -EINVAL; } goto out; } - zero_user_segment(page, 0, thp_size(page)); - SetPageUptodate(page); + zero_user_segment(&folio->page, 0, folio_size(folio)); + folio_mark_uptodate(folio); goto out; } - r = netfs_write_begin(file, inode->i_mapping, pos, len, 0, &page, NULL, + r = netfs_write_begin(file, inode->i_mapping, pos, len, 0, &folio, NULL, &ceph_netfs_read_ops, NULL); out: if (r == 0) - wait_on_page_fscache(page); + folio_wait_fscache(folio); if (r < 0) { - if (page) - put_page(page); + if (folio) + folio_put(folio); } else { - WARN_ON_ONCE(!PageLocked(page)); - *pagep = page; + WARN_ON_ONCE(!folio_test_locked(folio)); + *pagep = &folio->page; } return r; } @@ -1273,32 +1278,33 @@ out: */ static int ceph_write_end(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, - struct page *page, void *fsdata) + struct page *subpage, void *fsdata) { + struct folio *folio = page_folio(subpage); struct inode *inode = file_inode(file); bool check_cap = false; - dout("write_end file %p inode %p page %p %d~%d (%d)\n", file, - inode, page, (int)pos, (int)copied, (int)len); + dout("write_end file %p inode %p folio %p %d~%d (%d)\n", file, + inode, folio, (int)pos, (int)copied, (int)len); - if (!PageUptodate(page)) { + if (!folio_test_uptodate(folio)) { /* just return that nothing was copied on a short copy */ if (copied < len) { copied = 0; goto out; } - SetPageUptodate(page); + folio_mark_uptodate(folio); } /* did file size increase? */ if (pos+copied > i_size_read(inode)) check_cap = ceph_inode_set_size(inode, pos+copied); - set_page_dirty(page); + folio_mark_dirty(folio); out: - unlock_page(page); - put_page(page); + folio_unlock(folio); + folio_put(folio); if (check_cap) ceph_check_caps(ceph_inode(inode), CHECK_CAPS_AUTHONLY, NULL); |