drm/xe/shrinker: Return the freed page count through a parameter

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__xe_shrinker_walk() and xe_shrinker_walk() return either the number of
pages freed or a negative error, so the two cannot be reported at once.
On error the pages already freed are dropped, and since xe_shrinker_scan()
only accumulates non-negative returns while *scanned is updated by
pointer, the shrinker tells mm that it scanned without freeing.

Accumulate the count into a caller-provided counter and return only the
status, so an error no longer discards what the walk had freed.

Fixes: 00c8efc318 ("drm/xe: Add a shrinker for xe bos")
Assisted-by: Claude:claude-opus-5
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260909162102.1097006-2-shuicheng.lin@intel.com
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
(cherry picked from commit d7aac1a023)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Shuicheng Lin 2026-09-09 16:21:01 +00:00 • committed by Rodrigo Vivi

parent d0c0952878

commit 3c90e42a01

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1 changed files with 26 additions and 36 deletions

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drivers/gpu/drm/xe/xe_shrinker.c

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