f2fs: factor out discard_cmd usage from general rb_tree use

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This is a second part to remove the mixed use of rb_tree in discard_cmd from
extent_cache.

This should also fix arm32 memory alignment issue caused by shared rb_entry.

[struct discard_cmd]               [struct rb_entry]
[0] struct rb_node rb_node;        [0] struct rb_node rb_node;
  union {                              union {
    struct {                             struct {
[16]  block_t lstart;              [12]    unsigned int ofs;
      block_t len;                         unsigned int len;
                                         };
                                         unsigned long long key;
                                       } __packed;

Cc: <stable@vger.kernel.org>
Fixes: 004b686218 ("f2fs: use rb-tree to track pending discard commands")
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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This commit is contained in:

Jaegeuk Kim 2023-03-10 11:12:35 -08:00

parent 043d2d00b4

commit f69475dd48

3 changed files with 169 additions and 139 deletions

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36

fs/f2fs/extent_cache.c

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23

fs/f2fs/f2fs.h

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247

fs/f2fs/segment.c

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