public inbox for linux-ext4@vger.kernel.org
 help / color / mirror / Atom feed
From: Jan Kara <jack@suse.cz>
To: Ted Tso <tytso@mit.edu>
Cc: <linux-ext4@vger.kernel.org>,
	Ritesh Harjani <ritesh.list@gmail.com>, Jan Kara <jack@suse.cz>,
	stable@vger.kernel.org
Subject: [PATCH 04/10] ext4: Unindent codeblock in ext4_xattr_block_set()
Date: Tue, 14 Jun 2022 18:05:18 +0200	[thread overview]
Message-ID: <20220614160603.20566-4-jack@suse.cz> (raw)
In-Reply-To: <20220614124146.21594-1-jack@suse.cz>

Remove unnecessary else (and thus indentation level) from a code block
in ext4_xattr_block_set(). It will also make following code changes
easier. No functional changes.

CC: stable@vger.kernel.org
Fixes: 82939d7999df ("ext4: convert to mbcache2")
Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/ext4/xattr.c | 79 ++++++++++++++++++++++++-------------------------
 1 file changed, 39 insertions(+), 40 deletions(-)

diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 7fc40fb1e6b3..aadfae53d055 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1850,6 +1850,8 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
 #define header(x) ((struct ext4_xattr_header *)(x))
 
 	if (s->base) {
+		int offset = (char *)s->here - bs->bh->b_data;
+
 		BUFFER_TRACE(bs->bh, "get_write_access");
 		error = ext4_journal_get_write_access(handle, sb, bs->bh,
 						      EXT4_JTR_NONE);
@@ -1882,50 +1884,47 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
 			if (error)
 				goto cleanup;
 			goto inserted;
-		} else {
-			int offset = (char *)s->here - bs->bh->b_data;
+		}
+		unlock_buffer(bs->bh);
+		ea_bdebug(bs->bh, "cloning");
+		s->base = kmalloc(bs->bh->b_size, GFP_NOFS);
+		error = -ENOMEM;
+		if (s->base == NULL)
+			goto cleanup;
+		memcpy(s->base, BHDR(bs->bh), bs->bh->b_size);
+		s->first = ENTRY(header(s->base)+1);
+		header(s->base)->h_refcount = cpu_to_le32(1);
+		s->here = ENTRY(s->base + offset);
+		s->end = s->base + bs->bh->b_size;
 
-			unlock_buffer(bs->bh);
-			ea_bdebug(bs->bh, "cloning");
-			s->base = kmalloc(bs->bh->b_size, GFP_NOFS);
-			error = -ENOMEM;
-			if (s->base == NULL)
+		/*
+		 * If existing entry points to an xattr inode, we need
+		 * to prevent ext4_xattr_set_entry() from decrementing
+		 * ref count on it because the reference belongs to the
+		 * original block. In this case, make the entry look
+		 * like it has an empty value.
+		 */
+		if (!s->not_found && s->here->e_value_inum) {
+			ea_ino = le32_to_cpu(s->here->e_value_inum);
+			error = ext4_xattr_inode_iget(inode, ea_ino,
+				      le32_to_cpu(s->here->e_hash),
+				      &tmp_inode);
+			if (error)
 				goto cleanup;
-			memcpy(s->base, BHDR(bs->bh), bs->bh->b_size);
-			s->first = ENTRY(header(s->base)+1);
-			header(s->base)->h_refcount = cpu_to_le32(1);
-			s->here = ENTRY(s->base + offset);
-			s->end = s->base + bs->bh->b_size;
 
-			/*
-			 * If existing entry points to an xattr inode, we need
-			 * to prevent ext4_xattr_set_entry() from decrementing
-			 * ref count on it because the reference belongs to the
-			 * original block. In this case, make the entry look
-			 * like it has an empty value.
-			 */
-			if (!s->not_found && s->here->e_value_inum) {
-				ea_ino = le32_to_cpu(s->here->e_value_inum);
-				error = ext4_xattr_inode_iget(inode, ea_ino,
-					      le32_to_cpu(s->here->e_hash),
-					      &tmp_inode);
-				if (error)
-					goto cleanup;
-
-				if (!ext4_test_inode_state(tmp_inode,
-						EXT4_STATE_LUSTRE_EA_INODE)) {
-					/*
-					 * Defer quota free call for previous
-					 * inode until success is guaranteed.
-					 */
-					old_ea_inode_quota = le32_to_cpu(
-							s->here->e_value_size);
-				}
-				iput(tmp_inode);
-
-				s->here->e_value_inum = 0;
-				s->here->e_value_size = 0;
+			if (!ext4_test_inode_state(tmp_inode,
+					EXT4_STATE_LUSTRE_EA_INODE)) {
+				/*
+				 * Defer quota free call for previous
+				 * inode until success is guaranteed.
+				 */
+				old_ea_inode_quota = le32_to_cpu(
+						s->here->e_value_size);
 			}
+			iput(tmp_inode);
+
+			s->here->e_value_inum = 0;
+			s->here->e_value_size = 0;
 		}
 	} else {
 		/* Allocate a buffer where we construct the new block. */
-- 
2.35.3


  parent reply	other threads:[~2022-06-14 16:06 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-14 16:05 [PATCH 0/10 v2] ext4: Fix possible fs corruption due to xattr races Jan Kara
2022-06-14 16:05 ` [PATCH 01/10] mbcache: Don't reclaim used entries Jan Kara
2022-06-16 14:22   ` Ritesh Harjani
2022-06-16 17:25     ` Jan Kara
2022-06-14 16:05 ` [PATCH 02/10] mbcache: Add functions to delete entry if unused Jan Kara
2022-06-16 14:47   ` Ritesh Harjani
2022-06-16 17:28     ` Jan Kara
2022-06-14 16:05 ` [PATCH 03/10] ext4: Remove EA inode entry from mbcache on inode eviction Jan Kara
2022-06-16 15:01   ` Ritesh Harjani
2022-06-16 17:30     ` Jan Kara
2022-06-14 16:05 ` Jan Kara [this message]
2022-06-14 16:05 ` [PATCH 05/10] ext4: Fix race when reusing xattr blocks Jan Kara
2022-06-14 16:05 ` [PATCH 06/10] ext2: Factor our freeing of xattr block reference Jan Kara
2022-06-14 16:05 ` [PATCH 07/10] ext2: Unindent codeblock in ext2_xattr_set() Jan Kara
2022-06-14 16:05 ` [PATCH 08/10] ext2: Avoid deleting xattr block that is being reused Jan Kara
2022-06-14 16:05 ` [PATCH 09/10] mbcache: Remove mb_cache_entry_delete() Jan Kara
2022-06-14 16:05 ` [PATCH 10/10] mbcache: Automatically delete entries from cache on freeing Jan Kara
2022-06-16 11:54 ` [PATCH 0/10 v2] ext4: Fix possible fs corruption due to xattr races Ritesh Harjani
2022-06-16 12:49   ` Jan Kara
  -- strict thread matches above, loose matches on Subject: below --
2022-07-12 10:54 [PATCH 0/10 v3] " Jan Kara
2022-07-12 10:54 ` [PATCH 04/10] ext4: Unindent codeblock in ext4_xattr_block_set() Jan Kara
2022-07-14 12:19   ` Ritesh Harjani

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220614160603.20566-4-jack@suse.cz \
    --to=jack@suse.cz \
    --cc=linux-ext4@vger.kernel.org \
    --cc=ritesh.list@gmail.com \
    --cc=stable@vger.kernel.org \
    --cc=tytso@mit.edu \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox