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fscache: Fix if condition in fscache_wait_on_volume_collision()

After waiting for the volume to complete the acquisition with timeout, the if condition under which potential volume collision occurs should be acquire the volume is still pending rather than not pending so that we will continue to wait until the pending flag is cleared. Also, use the existing test pending wrapper directly instead of test_bit().

Yue Hu committed 4 years ago

Commit bf174551 parent 03c765b1 file · +2 −2Browse files

Unified · Split

fs/fscache/volume.c+2−2
@@ -143,7 +143,7 @@ static void fscache_wait_on_volume_collision(struct fscache_volume *candidate, · 142 unmodified lines
143{143{
144 wait_var_event_timeout(&candidate->flags,144 wait_var_event_timeout(&candidate->flags,
145 !fscache_is_acquire_pending(candidate), 20 * HZ);145 !fscache_is_acquire_pending(candidate), 20 * HZ);
146 if (!fscache_is_acquire_pending(candidate)) {146 if (fscache_is_acquire_pending(candidate)) {
147 pr_notice("Potential volume collision new=%08x old=%08x",147 pr_notice("Potential volume collision new=%08x old=%08x",
148 candidate->debug_id, collidee_debug_id);148 candidate->debug_id, collidee_debug_id);
149 fscache_stat(&fscache_n_volumes_collision);149 fscache_stat(&fscache_n_volumes_collision);
@@ -182,7 +182,7 @@ static bool fscache_hash_volume(struct fscache_volume *candidate) · 32 unmodified lines
182 hlist_bl_add_head(&candidate->hash_link, h);182 hlist_bl_add_head(&candidate->hash_link, h);
183 hlist_bl_unlock(h);183 hlist_bl_unlock(h);
184 184
185 if (test_bit(FSCACHE_VOLUME_ACQUIRE_PENDING, &candidate->flags))185 if (fscache_is_acquire_pending(candidate))
186 fscache_wait_on_volume_collision(candidate, collidee_debug_id);186 fscache_wait_on_volume_collision(candidate, collidee_debug_id);
187 return true;187 return true;
188 188