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authorTheodore Ts'o <tytso@mit.edu>2026-07-16 10:10:20 -0400
committerTheodore Ts'o <tytso@mit.edu>2026-07-22 23:47:06 -0400
commit61e2a90a910cb9ed27ca647895f073af0b640351 (patch)
tree2db050d466ad74a89ce2832ae7984b372909ee8c /include
parentd19d239ada9b7c92d086a1f051b7566538ee0089 (diff)
ext4: enable scoped NOFS when starting a handle in nojournal mode
The jbd2 layer enables NOFS mode using memalloc_nofs_{save,restore}() while a handle is active. We need to do the same in nojournal mode so that it is safe to remove GFP_NOFS flags while a jbd2 handle is active. This will require that we actually allocate a real handle, but with an h_invalid flag set, so there is a place to put the saved memalloc context. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Diffstat (limited to 'include')
-rw-r--r--include/linux/jbd2.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index b68561187e90..7348fdadc810 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -513,6 +513,7 @@ struct jbd2_journal_handle
unsigned int h_sync: 1;
unsigned int h_reserved: 1;
unsigned int h_aborted: 1;
+ unsigned int h_invalid: 1;
unsigned int h_type: 8;
unsigned int h_line_no: 16;