Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-25 13:41:51 +00:00
Code Issues Packages Projects Releases Wiki Activity

maple_tree: preallocate nodes in mas_erase()

Browse Source 
Use mas_wr_preallocate() in mas_erase() to preallocate enough nodes to
complete the erase.  Add error handling by skipping the store if the
preallocation lead to some error besides no memory.

Link: https://lkml.kernel.org/r/20240814161944.55347-7-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Sidhartha Kumar 2024-08-14 12:19:33 -04:00 committed by Andrew Morton
parent 3cd9e92e00
commit 7e093834ed
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/maple_tree.c
View File

@ -6371,14 +6371,18 @@ write_retry:
/* Must reset to ensure spanning writes of last slot are detected */
mas_reset(mas);
mas_wr_store_setup(&wr_mas);
mas_wr_store_entry(&wr_mas);
mas_wr_preallocate(&wr_mas, NULL);
if (mas_nomem(mas, GFP_KERNEL)) {
/* in case the range of entry changed when unlocked */
mas->index = mas->last = index;
goto write_retry;
}
if (mas_is_err(mas))
goto out;
mas_wr_store_entry(&wr_mas);
out:
mas_destroy(mas);
return entry;
}