Patch "ext4: use pre-allocated es in __es_insert_extent()" has been added to the 6.1-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    ext4: use pre-allocated es in __es_insert_extent()

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ext4-use-pre-allocated-es-in-__es_insert_extent.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 50cfa8d272c4420883512db85e46e483d7ef4bb7
Author: Baokun Li <libaokun1@xxxxxxxxxx>
Date:   Mon Apr 24 11:38:38 2023 +0800

    ext4: use pre-allocated es in __es_insert_extent()
    
    [ Upstream commit 95f0b320339a977cf69872eac107122bf536775d ]
    
    Pass a extent_status pointer prealloc to __es_insert_extent(). If the
    pointer is non-null, it is used directly when a new extent_status is
    needed to avoid memory allocation failures.
    
    Suggested-by: Jan Kara <jack@xxxxxxx>
    Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx>
    Reviewed-by: Jan Kara <jack@xxxxxxx>
    Link: https://lore.kernel.org/r/20230424033846.4732-5-libaokun1@xxxxxxxxxx
    Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
    Stable-dep-of: 8e387c89e96b ("ext4: make sure allocate pending entry not fail")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index 45f97c9670a3c..e459a0c2d71ef 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -144,7 +144,8 @@
 static struct kmem_cache *ext4_es_cachep;
 static struct kmem_cache *ext4_pending_cachep;
 
-static int __es_insert_extent(struct inode *inode, struct extent_status *newes);
+static int __es_insert_extent(struct inode *inode, struct extent_status *newes,
+			      struct extent_status *prealloc);
 static int __es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
 			      ext4_lblk_t end, int *reserved);
 static int es_reclaim_extents(struct ext4_inode_info *ei, int *nr_to_scan);
@@ -768,7 +769,8 @@ static inline void ext4_es_insert_extent_check(struct inode *inode,
 }
 #endif
 
-static int __es_insert_extent(struct inode *inode, struct extent_status *newes)
+static int __es_insert_extent(struct inode *inode, struct extent_status *newes,
+			      struct extent_status *prealloc)
 {
 	struct ext4_es_tree *tree = &EXT4_I(inode)->i_es_tree;
 	struct rb_node **p = &tree->root.rb_node;
@@ -808,7 +810,10 @@ static int __es_insert_extent(struct inode *inode, struct extent_status *newes)
 		}
 	}
 
-	es = __es_alloc_extent(false);
+	if (prealloc)
+		es = prealloc;
+	else
+		es = __es_alloc_extent(false);
 	if (!es)
 		return -ENOMEM;
 	ext4_es_init_extent(inode, es, newes->es_lblk, newes->es_len,
@@ -868,7 +873,7 @@ int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk,
 	if (err != 0)
 		goto error;
 retry:
-	err = __es_insert_extent(inode, &newes);
+	err = __es_insert_extent(inode, &newes, NULL);
 	if (err == -ENOMEM && __es_shrink(EXT4_SB(inode->i_sb),
 					  128, EXT4_I(inode)))
 		goto retry;
@@ -918,7 +923,7 @@ void ext4_es_cache_extent(struct inode *inode, ext4_lblk_t lblk,
 
 	es = __es_tree_search(&EXT4_I(inode)->i_es_tree.root, lblk);
 	if (!es || es->es_lblk > end)
-		__es_insert_extent(inode, &newes);
+		__es_insert_extent(inode, &newes, NULL);
 	write_unlock(&EXT4_I(inode)->i_es_lock);
 }
 
@@ -1364,7 +1369,7 @@ static int __es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
 					orig_es.es_len - len2;
 			ext4_es_store_pblock_status(&newes, block,
 						    ext4_es_status(&orig_es));
-			err = __es_insert_extent(inode, &newes);
+			err = __es_insert_extent(inode, &newes, NULL);
 			if (err) {
 				es->es_lblk = orig_es.es_lblk;
 				es->es_len = orig_es.es_len;
@@ -2020,7 +2025,7 @@ int ext4_es_insert_delayed_block(struct inode *inode, ext4_lblk_t lblk,
 	if (err != 0)
 		goto error;
 retry:
-	err = __es_insert_extent(inode, &newes);
+	err = __es_insert_extent(inode, &newes, NULL);
 	if (err == -ENOMEM && __es_shrink(EXT4_SB(inode->i_sb),
 					  128, EXT4_I(inode)))
 		goto retry;



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux