diff options
| author | Eric Van Hensbergen <ericvh@kernel.org> | 2023-03-27 01:53:10 +0000 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@kernel.org> | 2023-04-09 21:41:21 +0000 |
| commit | 4eb3117888a923f6b9b1ad2dd093641c49a63ae5 (patch) | |
| tree | 789a090dabce6ae9a4c6b557cfcfbe6417170215 /fs/9p/vfs_addr.c | |
| parent | 1543b4c5071c54d76aad7a7a26a6e43082269b0c (diff) | |
fs/9p: Rework cache modes and add new options to Documentation
Switch cache modes to a bit-mask and use legacy
cache names as shortcuts. Update documentation to
include information on both shortcuts and bitmasks.
This patch also fixes missing guards related to fscache.
Update the documentation for new mount flags
and cache modes.
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
Diffstat (limited to 'fs/9p/vfs_addr.c')
| -rw-r--r-- | fs/9p/vfs_addr.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index 211165430a8a..9239a049f736 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -115,8 +115,6 @@ const struct netfs_request_ops v9fs_req_ops = { static bool v9fs_release_folio(struct folio *folio, gfp_t gfp) { - struct inode *inode = folio_inode(folio); - if (folio_test_private(folio)) return false; #ifdef CONFIG_9P_FSCACHE @@ -125,8 +123,8 @@ static bool v9fs_release_folio(struct folio *folio, gfp_t gfp) return false; folio_wait_fscache(folio); } + fscache_note_page_release(v9fs_inode_cookie(V9FS_I(folio_inode(folio)))); #endif - fscache_note_page_release(v9fs_inode_cookie(V9FS_I(inode))); return true; } @@ -136,6 +134,7 @@ static void v9fs_invalidate_folio(struct folio *folio, size_t offset, folio_wait_fscache(folio); } +#ifdef CONFIG_9P_FSCACHE static void v9fs_write_to_cache_done(void *priv, ssize_t transferred_or_error, bool was_async) { @@ -149,18 +148,19 @@ static void v9fs_write_to_cache_done(void *priv, ssize_t transferred_or_error, i_size_read(&v9inode->netfs.inode), 0); } } +#endif static int v9fs_vfs_write_folio_locked(struct folio *folio) { struct inode *inode = folio_inode(folio); - struct v9fs_inode *v9inode = V9FS_I(inode); - struct fscache_cookie *cookie = v9fs_inode_cookie(v9inode); loff_t start = folio_pos(folio); loff_t i_size = i_size_read(inode); struct iov_iter from; size_t len = folio_size(folio); struct p9_fid *writeback_fid; int err; + struct v9fs_inode __maybe_unused *v9inode = V9FS_I(inode); + struct fscache_cookie __maybe_unused *cookie = v9fs_inode_cookie(v9inode); if (start >= i_size) return 0; /* Simultaneous truncation occurred */ @@ -181,15 +181,17 @@ static int v9fs_vfs_write_folio_locked(struct folio *folio) p9_client_write(writeback_fid, start, &from, &err); +#ifdef CONFIG_9P_FSCACHE if (err == 0 && - fscache_cookie_enabled(cookie) && - test_bit(FSCACHE_COOKIE_IS_CACHING, &cookie->flags)) { + fscache_cookie_enabled(cookie) && + test_bit(FSCACHE_COOKIE_IS_CACHING, &cookie->flags)) { folio_start_fscache(folio); fscache_write_to_cache(v9fs_inode_cookie(v9inode), - folio_mapping(folio), start, len, i_size, - v9fs_write_to_cache_done, v9inode, - true); + folio_mapping(folio), start, len, i_size, + v9fs_write_to_cache_done, v9inode, + true); } +#endif folio_end_writeback(folio); p9_fid_put(writeback_fid); @@ -300,7 +302,6 @@ static int v9fs_write_end(struct file *filp, struct address_space *mapping, loff_t last_pos = pos + copied; struct folio *folio = page_folio(subpage); struct inode *inode = mapping->host; - struct v9fs_inode *v9inode = V9FS_I(inode); p9_debug(P9_DEBUG_VFS, "filp %p, mapping %p\n", filp, mapping); @@ -320,7 +321,10 @@ static int v9fs_write_end(struct file *filp, struct address_space *mapping, if (last_pos > inode->i_size) { inode_add_bytes(inode, last_pos - inode->i_size); i_size_write(inode, last_pos); - fscache_update_cookie(v9fs_inode_cookie(v9inode), NULL, &last_pos); +#ifdef CONFIG_9P_FSCACHE + fscache_update_cookie(v9fs_inode_cookie(V9FS_I(inode)), NULL, + &last_pos); +#endif } folio_mark_dirty(folio); out: |