From patchwork Thu Jun 6 07:33:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 13687931 Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A702D13BC01; Thu, 6 Jun 2024 07:34:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.235.227.194 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717659280; cv=none; b=sY4blUUaTII+DNDozditdMngGD6AZepF/axhZFoxs3y+4hyWGqNDBnGGcEsHnTEQje1pxGbu0NEso/0knsqRHhHLq3uP6MpS/66uz/RXreiFFfvIbwM7waZCT7lE+ppHg9D5YNy7YYbZD7bakMatqtSqEqZxiAJEcFZXiBi2rbg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717659280; c=relaxed/simple; bh=Rsfw/Z1/w9bi5bHJL1wBN1TEmEgG5zrrj+bowQVUnaY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=EmXyzytd/kPZX8wE5RyBaI1qU8k9tim03Kcs8punVbE6EK+OT0kyuKkqByuQ8evySgGLlc3kv8tYeN6ZKKkNbZVQap2do7H7kipSUVKY1pRGjsI2q5denjDJ6tPDKT8xDNMSkNUwguoFmafZaQyEGs6LlJD1WDAbzhDZE3UPuHw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=eq2NxkmV; arc=none smtp.client-ip=46.235.227.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="eq2NxkmV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1717659277; bh=Rsfw/Z1/w9bi5bHJL1wBN1TEmEgG5zrrj+bowQVUnaY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eq2NxkmVwILFXORAsvoPRb+PWDfBFTnZ58wwZexFXQpX/k9O+Aec61LJri1klPtYu +TAusTkd+7Sxe1zgTrrHIMLdSFoWAwtFXhIANXCDeeXD8JbuXLl8zrb1sbW5pkWHaO y9b3HpmAbP2U7lfzRfDs5Td8xZ3jfMKi4EX8uumDlbddG35VySJqCGJg/VcRvrncZn H1c/Jn0uXifCqmOctASQ7foR3/WZjPsEnxN1kyl6nUeJehYfqTbXFkBW1I0Kuo+8Y+ w7S7EGDqAVjWnzOAbEJ52B0GSV1ww+550/fbgKUjwXvJ3LTwGzu7QRYu9rugV+Fwz+ hNX2JdZxZ9Bew== Received: from eugen-station.. (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: ehristev) by madrid.collaboradmins.com (Postfix) with ESMTPSA id ED91D37821D5; Thu, 6 Jun 2024 07:34:35 +0000 (UTC) From: Eugen Hristev To: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, jaegeuk@kernel.org, adilger.kernel@dilger.ca, tytso@mit.edu Cc: chao@kernel.org, viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz, ebiggers@google.com, krisman@suse.de, kernel@collabora.com, Gabriel Krisman Bertazi , Eugen Hristev Subject: [PATCH v18 2/7] f2fs: Simplify the handling of cached casefolded names Date: Thu, 6 Jun 2024 10:33:48 +0300 Message-Id: <20240606073353.47130-3-eugen.hristev@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240606073353.47130-1-eugen.hristev@collabora.com> References: <20240606073353.47130-1-eugen.hristev@collabora.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Gabriel Krisman Bertazi Keeping it as qstr avoids the unnecessary conversion in f2fs_match Signed-off-by: Gabriel Krisman Bertazi [eugen.hristev@collabora.com: port to 6.10-rc1 and minor changes] Signed-off-by: Eugen Hristev Reviewed-by: Eric Biggers --- fs/f2fs/dir.c | 53 ++++++++++++++++++++++++++-------------------- fs/f2fs/f2fs.h | 16 +++++++++++++- fs/f2fs/recovery.c | 9 +------- 3 files changed, 46 insertions(+), 32 deletions(-) diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 02c9355176d3..bdf980e25adb 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -42,35 +42,49 @@ static unsigned int bucket_blocks(unsigned int level) return 4; } +#if IS_ENABLED(CONFIG_UNICODE) /* If @dir is casefolded, initialize @fname->cf_name from @fname->usr_fname. */ int f2fs_init_casefolded_name(const struct inode *dir, struct f2fs_filename *fname) { -#if IS_ENABLED(CONFIG_UNICODE) struct super_block *sb = dir->i_sb; + unsigned char *buf; + int len; if (IS_CASEFOLDED(dir) && !is_dot_dotdot(fname->usr_fname->name, fname->usr_fname->len)) { - fname->cf_name.name = f2fs_kmem_cache_alloc(f2fs_cf_name_slab, - GFP_NOFS, false, F2FS_SB(sb)); - if (!fname->cf_name.name) + buf = f2fs_kmem_cache_alloc(f2fs_cf_name_slab, + GFP_NOFS, false, F2FS_SB(sb)); + if (!buf) return -ENOMEM; - fname->cf_name.len = utf8_casefold(sb->s_encoding, - fname->usr_fname, - fname->cf_name.name, - F2FS_NAME_LEN); - if ((int)fname->cf_name.len <= 0) { - kmem_cache_free(f2fs_cf_name_slab, fname->cf_name.name); - fname->cf_name.name = NULL; + + len = utf8_casefold(sb->s_encoding, fname->usr_fname, + buf, F2FS_NAME_LEN); + if (len <= 0) { + kmem_cache_free(f2fs_cf_name_slab, buf); if (sb_has_strict_encoding(sb)) return -EINVAL; /* fall back to treating name as opaque byte sequence */ + return 0; } + fname->cf_name.name = buf; + fname->cf_name.len = len; } -#endif + return 0; } +void f2fs_free_casefolded_name(struct f2fs_filename *fname) +{ + unsigned char *buf = (unsigned char *)fname->cf_name.name; + + if (buf) { + kmem_cache_free(f2fs_cf_name_slab, buf); + fname->cf_name.name = NULL; + } +} +#endif /* CONFIG_UNICODE */ + static int __f2fs_setup_filename(const struct inode *dir, const struct fscrypt_name *crypt_name, struct f2fs_filename *fname) @@ -142,12 +156,7 @@ void f2fs_free_filename(struct f2fs_filename *fname) kfree(fname->crypto_buf.name); fname->crypto_buf.name = NULL; #endif -#if IS_ENABLED(CONFIG_UNICODE) - if (fname->cf_name.name) { - kmem_cache_free(f2fs_cf_name_slab, fname->cf_name.name); - fname->cf_name.name = NULL; - } -#endif + f2fs_free_casefolded_name(fname); } static unsigned long dir_block_index(unsigned int level, @@ -235,11 +244,9 @@ static inline int f2fs_match_name(const struct inode *dir, struct fscrypt_name f; #if IS_ENABLED(CONFIG_UNICODE) - if (fname->cf_name.name) { - struct qstr cf = FSTR_TO_QSTR(&fname->cf_name); - - return f2fs_match_ci_name(dir, &cf, de_name, de_name_len); - } + if (fname->cf_name.name) + return f2fs_match_ci_name(dir, &fname->cf_name, + de_name, de_name_len); #endif f.usr_fname = fname->usr_fname; f.disk_name = fname->disk_name; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 1974b6aff397..8a9d910aa552 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -531,7 +531,7 @@ struct f2fs_filename { * internal operation where usr_fname is also NULL. In all these cases * we fall back to treating the name as an opaque byte sequence. */ - struct fscrypt_str cf_name; + struct qstr cf_name; #endif }; @@ -3533,8 +3533,22 @@ int f2fs_get_tmpfile(struct mnt_idmap *idmap, struct inode *dir, /* * dir.c */ +#if IS_ENABLED(CONFIG_UNICODE) int f2fs_init_casefolded_name(const struct inode *dir, struct f2fs_filename *fname); +void f2fs_free_casefolded_name(struct f2fs_filename *fname); +#else +static inline int f2fs_init_casefolded_name(const struct inode *dir, + struct f2fs_filename *fname) +{ + return 0; +} + +static inline void f2fs_free_casefolded_name(struct f2fs_filename *fname) +{ +} +#endif /* CONFIG_UNICODE */ + int f2fs_setup_filename(struct inode *dir, const struct qstr *iname, int lookup, struct f2fs_filename *fname); int f2fs_prepare_lookup(struct inode *dir, struct dentry *dentry, diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index 496aee53c38a..8712e264071f 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -46,10 +46,6 @@ static struct kmem_cache *fsync_entry_slab; -#if IS_ENABLED(CONFIG_UNICODE) -extern struct kmem_cache *f2fs_cf_name_slab; -#endif - bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi) { s64 nalloc = percpu_counter_sum_positive(&sbi->alloc_valid_block_count); @@ -153,11 +149,8 @@ static int init_recovered_filename(const struct inode *dir, if (err) return err; f2fs_hash_filename(dir, fname); -#if IS_ENABLED(CONFIG_UNICODE) /* Case-sensitive match is fine for recovery */ - kmem_cache_free(f2fs_cf_name_slab, fname->cf_name.name); - fname->cf_name.name = NULL; -#endif + f2fs_free_casefolded_name(fname); } else { f2fs_hash_filename(dir, fname); }