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-rw-r--r--fs/fs-writeback.c48
-rw-r--r--fs/sync.c2
-rw-r--r--include/linux/backing-dev.h2
-rw-r--r--include/linux/writeback.h10
-rw-r--r--mm/page-writeback.c4
5 files changed, 15 insertions, 51 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 6753912641b..408a7877b79 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -45,7 +45,6 @@ struct wb_writeback_args {
unsigned int for_kupdate:1;
unsigned int range_cyclic:1;
unsigned int for_background:1;
- unsigned int sb_pinned:1;
};
/*
@@ -231,11 +230,6 @@ static void bdi_sync_writeback(struct backing_dev_info *bdi,
.sync_mode = WB_SYNC_ALL,
.nr_pages = LONG_MAX,
.range_cyclic = 0,
- /*
- * Setting sb_pinned is not necessary for WB_SYNC_ALL, but
- * lets make it explicitly clear.
- */
- .sb_pinned = 1,
};
struct bdi_work work;
@@ -251,23 +245,21 @@ static void bdi_sync_writeback(struct backing_dev_info *bdi,
* @bdi: the backing device to write from
* @sb: write inodes from this super_block
* @nr_pages: the number of pages to write
- * @sb_locked: caller already holds sb umount sem.
*
* Description:
* This does WB_SYNC_NONE opportunistic writeback. The IO is only
* started when this function returns, we make no guarentees on
- * completion. Caller specifies whether sb umount sem is held already or not.
+ * completion. Caller need not hold sb s_umount semaphore.
*
*/
void bdi_start_writeback(struct backing_dev_info *bdi, struct super_block *sb,
- long nr_pages, int sb_locked)
+ long nr_pages)
{
struct wb_writeback_args args = {
.sb = sb,
.sync_mode = WB_SYNC_NONE,
.nr_pages = nr_pages,
.range_cyclic = 1,
- .sb_pinned = sb_locked,
};
/*
@@ -592,7 +584,7 @@ static enum sb_pin_state pin_sb_for_writeback(struct writeback_control *wbc,
/*
* Caller must already hold the ref for this
*/
- if (wbc->sync_mode == WB_SYNC_ALL || wbc->sb_pinned) {
+ if (wbc->sync_mode == WB_SYNC_ALL) {
WARN_ON(!rwsem_is_locked(&sb->s_umount));
return SB_NOT_PINNED;
}
@@ -766,7 +758,6 @@ static long wb_writeback(struct bdi_writeback *wb,
.for_kupdate = args->for_kupdate,
.for_background = args->for_background,
.range_cyclic = args->range_cyclic,
- .sb_pinned = args->sb_pinned,
};
unsigned long oldest_jif;
long wrote = 0;
@@ -1214,18 +1205,6 @@ static void wait_sb_inodes(struct super_block *sb)
iput(old_inode);
}
-static void __writeback_inodes_sb(struct super_block *sb, int sb_locked)
-{
- unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
- unsigned long nr_unstable = global_page_state(NR_UNSTABLE_NFS);
- long nr_to_write;
-
- nr_to_write = nr_dirty + nr_unstable +
- (inodes_stat.nr_inodes - inodes_stat.nr_unused);
-
- bdi_start_writeback(sb->s_bdi, sb, nr_to_write, sb_locked);
-}
-
/**
* writeback_inodes_sb - writeback dirty inodes from given super_block
* @sb: the superblock
@@ -1237,21 +1216,16 @@ static void __writeback_inodes_sb(struct super_block *sb, int sb_locked)
*/
void writeback_inodes_sb(struct super_block *sb)
{
- __writeback_inodes_sb(sb, 0);
-}
-EXPORT_SYMBOL(writeback_inodes_sb);
+ unsigned long nr_dirty = global_page_state(NR_FILE_DIRTY);
+ unsigned long nr_unstable = global_page_state(NR_UNSTABLE_NFS);
+ long nr_to_write;
-/**
- * writeback_inodes_sb_locked - writeback dirty inodes from given super_block
- * @sb: the superblock
- *
- * Like writeback_inodes_sb(), except the caller already holds the
- * sb umount sem.
- */
-void writeback_inodes_sb_locked(struct super_block *sb)
-{
- __writeback_inodes_sb(sb, 1);
+ nr_to_write = nr_dirty + nr_unstable +
+ (inodes_stat.nr_inodes - inodes_stat.nr_unused);
+
+ bdi_start_writeback(sb->s_bdi, sb, nr_to_write);
}
+EXPORT_SYMBOL(writeback_inodes_sb);
/**
* writeback_inodes_sb_if_idle - start writeback if none underway
diff --git a/fs/sync.c b/fs/sync.c
index e8cbd415e50..5a537ccd2e8 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -42,7 +42,7 @@ static int __sync_filesystem(struct super_block *sb, int wait)
if (wait)
sync_inodes_sb(sb);
else
- writeback_inodes_sb_locked(sb);
+ writeback_inodes_sb(sb);
if (sb->s_op->sync_fs)
sb->s_op->sync_fs(sb, wait);
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index e6e0cb5437e..aee5f6ce166 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -106,7 +106,7 @@ int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev);
void bdi_unregister(struct backing_dev_info *bdi);
int bdi_setup_and_register(struct backing_dev_info *, char *, unsigned int);
void bdi_start_writeback(struct backing_dev_info *bdi, struct super_block *sb,
- long nr_pages, int sb_locked);
+ long nr_pages);
int bdi_writeback_task(struct bdi_writeback *wb);
int bdi_has_dirty_io(struct backing_dev_info *bdi);
void bdi_arm_supers_timer(void);
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index cc97d6caf2b..f64134653a8 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -65,15 +65,6 @@ struct writeback_control {
* so we use a single control to update them
*/
unsigned no_nrwrite_index_update:1;
-
- /*
- * For WB_SYNC_ALL, the sb must always be pinned. For WB_SYNC_NONE,
- * the writeback code will pin the sb for the caller. However,
- * for eg umount, the caller does WB_SYNC_NONE but already has
- * the sb pinned. If the below is set, caller already has the
- * sb pinned.
- */
- unsigned sb_pinned:1;
};
/*
@@ -82,7 +73,6 @@ struct writeback_control {
struct bdi_writeback;
int inode_wait(void *);
void writeback_inodes_sb(struct super_block *);
-void writeback_inodes_sb_locked(struct super_block *);
int writeback_inodes_sb_if_idle(struct super_block *);
void sync_inodes_sb(struct super_block *);
void writeback_inodes_wbc(struct writeback_control *wbc);
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index b289310e2c8..5fa63bdf52e 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -597,7 +597,7 @@ static void balance_dirty_pages(struct address_space *mapping,
(!laptop_mode && ((global_page_state(NR_FILE_DIRTY)
+ global_page_state(NR_UNSTABLE_NFS))
> background_thresh)))
- bdi_start_writeback(bdi, NULL, 0, 0);
+ bdi_start_writeback(bdi, NULL, 0);
}
void set_page_dirty_balance(struct page *page, int page_mkwrite)
@@ -707,7 +707,7 @@ void laptop_mode_timer_fn(unsigned long data)
*/
if (bdi_has_dirty_io(&q->backing_dev_info))
- bdi_start_writeback(&q->backing_dev_info, NULL, nr_pages, 0);
+ bdi_start_writeback(&q->backing_dev_info, NULL, nr_pages);
}
/*
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-13 18:29:22 +0000