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Date: Fri, 4 Oct 2019 00:05:55 +0200
From: Jan Kara <jack@...e.cz>
To: <linux-ext4@...r.kernel.org>
Cc: Ted Tso <tytso@....edu>, Jan Kara <jack@...e.cz>
Subject: [PATCH 09/22] ext4, jbd2: Provide accessor function for handle credits
Provide accessor function to get number of credits available in a handle
and use it from ext4. Later, computation of available credits won't be
so straightforward.
Signed-off-by: Jan Kara <jack@...e.cz>
---
fs/ext4/ext4_jbd2.c | 13 +++++++------
fs/ext4/ext4_jbd2.h | 7 -------
fs/ext4/xattr.c | 2 +-
include/linux/jbd2.h | 6 ++++++
4 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index 2b98d893cda9..731bbfdbce5b 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -119,8 +119,8 @@ handle_t *__ext4_journal_start_reserved(handle_t *handle, unsigned int line,
return ext4_get_nojournal();
sb = handle->h_journal->j_private;
- trace_ext4_journal_start_reserved(sb, handle->h_buffer_credits,
- _RET_IP_);
+ trace_ext4_journal_start_reserved(sb,
+ jbd2_handle_buffer_credits(handle), _RET_IP_);
err = ext4_journal_check_start(sb);
if (err < 0) {
jbd2_journal_free_reserved(handle);
@@ -138,10 +138,10 @@ int __ext4_journal_ensure_credits(handle_t *handle, int check_cred,
{
if (!ext4_handle_valid(handle))
return 0;
- if (handle->h_buffer_credits >= check_cred)
+ if (jbd2_handle_buffer_credits(handle) >= check_cred)
return 0;
return ext4_journal_extend(handle,
- extend_cred - handle->h_buffer_credits);
+ extend_cred - jbd2_handle_buffer_credits(handle));
}
static void ext4_journal_abort_handle(const char *caller, unsigned int line,
@@ -289,7 +289,7 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
handle->h_type,
handle->h_line_no,
handle->h_requested_credits,
- handle->h_buffer_credits, err);
+ jbd2_handle_buffer_credits(handle), err);
return err;
}
ext4_error_inode(inode, where, line,
@@ -300,7 +300,8 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
handle->h_type,
handle->h_line_no,
handle->h_requested_credits,
- handle->h_buffer_credits, err);
+ jbd2_handle_buffer_credits(handle),
+ err);
}
} else {
if (inode)
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index 1920b976eef1..36aa72599646 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -288,13 +288,6 @@ static inline int ext4_handle_is_aborted(handle_t *handle)
return 0;
}
-static inline int ext4_handle_has_enough_credits(handle_t *handle, int needed)
-{
- if (ext4_handle_valid(handle) && handle->h_buffer_credits < needed)
- return 0;
- return 1;
-}
-
#define ext4_journal_start_sb(sb, type, nblocks) \
__ext4_journal_start_sb((sb), __LINE__, (type), (nblocks), 0)
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index b79d8ffd3e9b..48a9dbd27f43 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -2314,7 +2314,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
flags & XATTR_CREATE);
brelse(bh);
- if (!ext4_handle_has_enough_credits(handle, credits)) {
+ if (jbd2_handle_buffer_credits(handle) < credits) {
error = -ENOSPC;
goto cleanup;
}
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 10e6049c0ba9..727ff91d7f3e 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -1645,6 +1645,12 @@ static inline tid_t jbd2_get_latest_transaction(journal_t *journal)
return tid;
}
+
+static inline int jbd2_handle_buffer_credits(handle_t *handle)
+{
+ return handle->h_buffer_credits;
+}
+
#ifdef __KERNEL__
#define buffer_trace_init(bh) do {} while (0)
--
2.16.4
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